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Kia EV6 vs. Toyota bZ4X: Complete comparison 2026

Kia EV6 vs Toyota bZ4X Comparison: Which electric SUV is better? We reveal real-world range, equipment, and driving characteristics. Read our clear verdict!

May 21, 2026

VS
Kia EV6

Kia EV6

Toyota bZ4X

Toyota bZ4X

Introduction

The Kia EV6 is an innovative fully electric crossover with a dynamic design and advanced architecture for ultra-fast charging, which has attracted significant attention since its debut in 2021. Standing against it is the Toyota bZ4X, more recently known simply as the Toyota bZ in some markets and developed jointly with its sister model, the Subaru Solterra, which focuses more on everyday practicality and a comfort-oriented chassis. In the following paragraphs, we will compare both cars in detail to find out which of these pure electric pioneers represents an overall better and more reliable choice on the market for four-year-old used cars.

Comparison of External Dimensions

When comparing the exterior dimensions of these two fully electric models, we find that despite an almost identical overall length, each automaker takes a completely different approach to proportions. If we focus on used cars around four years old (ideally model years 2021 to 2024), both models, with an overall length just under 4.7 meters, fall into the popular mid-size car category. They are thus versatile companions for daily family use, where you won't yet be troubled by excessive size when maneuvering in tight city streets.

The most significant differences can be found in the height and width of both bodies. Toyota bZ4X with its height of exactly 1,600 mm, maintains the features of a classic, more upright SUV. Kia EV6, on the other hand, takes the path of a sportier and more aerodynamic crossover – at 1,545 to 1,550 mm, it is noticeably lower and at the same time 20 to 30 mm wider. In practice, this means that while the Toyota offers a more traditional, perceptibly higher seating position and slightly easier entry, the Kia boasts a more aggressive, "crouched" stance that benefits highway efficiency. However, the slightly wider build of the South Korean model may require a bit more attention when parking at crowded shopping centers.

Another key parameter is the wheelbase, which has a fundamental influence on the distribution of interior space. The Kia EV6 scores in this area with an above-standard value of 2,900 mm, which is exactly 50 mm more than in the case of the Toyota (2,850 mm). This pushing of the wheels to the very corners of the body in the Kia promises slightly more generous longitudinal legroom for rear-seat passengers and improves directional stability at high speeds. The Toyota bZ4X, on the other hand, thanks to the combination of a higher build and a slightly shorter wheelbase, feels a bit more agile off-road, where it benefits from better breakover angles.

ParameterKia EV6 SUVToyota bZ4X SUV
Width (mm)1880 - 18901860
Length (mm)4680 - 46954690
Height (mm)1545 - 15501600
Wheelbase (mm)29002850

Trunk Volume

When choosing a fully electric family SUV, the trunk capacity often plays a decisive role. For families and active individuals alike, practicality is a key factor, whether it's for daily transport of sports equipment, a stroller, or overall spaciousness for weekend trips. The Kia EV6 and Toyota bZ4X, both representing a modern approach to the electric crossover segment, target a similar customer group, yet each handles interior proportions and maximum storage space utilization slightly differently.

Looking at the precise data for the generations that form the core of the market for roughly four-year-old used cars (2021–2024), we find that the Kia EV6 (CV generation) offers a slight advantage. The standard version features a basic trunk capacity of 490 liters, which grows to 1,300 liters after fully folding down the rear seats. It is worth noting that the sporty Kia EV6 GT variant has a slightly reduced capacity of 480 liters in the base and 1,260 liters when folded, due to its specific chassis design. The competing Toyota bZ4X (EAM1 generation) offers a slightly smaller standard trunk in this comparison with a base volume of 452 liters, while the European specification often does not even officially state the maximum volume when folded.

In real life, this difference represents 38 liters in favor of the Kia model, which means that proverbial space for a few extra small bags or backpacks. Nevertheless, both cars are sufficiently spacious and fully adequate for weekend shopping or longer vacations, especially thanks to the wide hatch and easily accessible loading area. However, the Kia EV6 overall scores with slightly greater flexibility when moving larger items, and its trunk design thus provides families with a small practical bonus.

ParameterKia EV6 SUVToyota bZ4X SUV
Base volume (liters)490452
Max volume with seats folded down (liters)1300not specified

🎒 Kia offers families valuable extra liters

Although neither of these vehicles breaks class records, the Kia EV6 offers a slightly more voluminous and flexible trunk, which serves a bit better than the Toyota bZ4X when packing for a family vacation.

Trailer Weights

Towing capacity is a key parameter for many buyers, especially for electric vehicles, where these values are often limited for technical reasons. When comparing used Kia EV6 and Toyota bZ4X models from 2021 to 2024, we encounter fundamental differences that can easily decide which car fits your lifestyle better. While one electric vehicle serves only for transporting light loads, the other is a surprisingly capable hauler that can handle even more demanding tasks.

Kia EV6 offers very variable values depending on the chosen battery capacity. The base version with the smaller 58 kWh battery can tow a braked trailer with a standard weight of 750 kg. However, if you opt for the more popular variant with the larger 77.4 kWh battery (or the top-of-the-line GT sports version), the maximum capacity for a braked trailer jumps to a respectable 1,600 kg.

Toyota bZ4X is significantly more modest in the 2022 to 2024 model years. Regardless of the powertrain or trim level you choose from this period, the maximum permitted weight of a braked trailer for the EAM1 generation is always just a basic 750 kg.

This technical difference has a major impact on the daily practical use of both cars. The 750 kg value for the Toyota bZ4X and the base Kia EV6 is quite sufficient for a weekend trip to the garden center, hauling light building materials on a small trailer, or installing a heavy e-bike rack. But if you plan to tow bulkier loads – for example, a family caravan, a boat, or a larger transporter – the Kia EV6 with the larger battery and 1,600 kg capacity is the only sensible choice that will provide you with enough freedom for longer holidays.

In terms of overall towing power, the Kia EV6 is the clear winner thanks to its immense versatility. The Toyota bZ4X, on the other hand, will suit drivers who expect only occasional help from the tow bar and do not plan to hitch up heavy trailers.

Model and powertrainBraked trailer weight (kg)Unbraked trailer weight (kg)
Kia EV6 (58 kWh)750750
Kia EV6 (77.4 kWh)1600750
Kia EV6 GT1600750
Toyota bZ4X (all versions 2022–2024)750750

Overview of Most Common Motorizations

When comparing the powertrains of these two purely electric models, the different approach of both carmakers is evident at first glance, which is key for those interested in a used car. Kia benefits from advanced 800V architecture in its EV6 model, which guarantees extremely fast charging, and offers a wide range of variants – from efficient rear-wheel drive versions to the super-sporty GT model with breathtaking performance, which ranks among the fastest crossovers on the market. In contrast, the Toyota bZ4X chooses a significantly more pragmatic and conservative path, relying on a single battery size with a choice between single or dual-axle drive. While Kia appeals to both drivers looking for maximum range and sports driving enthusiasts, Toyota targets users who prefer smooth operation, technological simplicity, and reliability, with the bonus of the sophisticated X-MODE system for confident driving on unpaved surfaces.

Kia EV6

The range of powertrains for the Kia EV6 CV generation (from 2021 to 2024) is very diverse, and almost everyone will find something to suit them. The base of the range consists of a version with a 58 kWh battery and rear-wheel drive (RWD) with an output of 125 kW. For buyers looking for the longest possible range on a single charge, the larger 77.4 kWh battery is ideal, which was offered with 168 kW (RWD), or in an all-wheel drive (AWD) version that uses two electric motors with a total output of 239 kW. The absolute top of the range is the uncompromising GT variant, which generates a massive 430 kW and 740 Nm of torque. All versions use a single-speed automatic transmission to transfer power. Since the end of 2024, the model has undergone a modernization, and the original batteries were replaced by modules with capacities of 63 and 84 kWh. However, with roughly four-year-old used cars, you will primarily encounter the original versions listed below.

Engine typeFuelPower (kW)Torque (Nm)Transmission
Electric motor (58 kWh RWD)Electricity1253501-speed automatic
Electric motor (77.4 kWh RWD)Electricity1683501-speed automatic
Electric motor (77.4 kWh AWD)Electricity2396051-speed automatic
Electric motor (77.4 kWh AWD GT)Electricity4307401-speed automatic

Toyota bZ4X

The Toyota bZ4X EAM1 generation (from 2022 to 2024) takes a much more sober approach to the powertrain range and provides customers with a very clear choice. All available variants from these years rely on a single lithium-ion battery with a gross capacity of 71.4 kWh. Interested parties can choose from two drivetrain configurations. The basic front-wheel drive (FWD) version provides 150 kW and 266 Nm of torque, which is perfectly sufficient for normal daily commuting or family trips. The second choice is the all-wheel drive (AWD) variant, which uses two compact electric motors with a total, slightly boosted system output of 160 kW and 337 Nm of torque. Like the rival Kia, Toyota also uses a single-speed reduction gearbox for both drive versions, which ensures linear and smooth pull.

Engine typeFuelPower (kW)Torque (Nm)Transmission
Electric motor (71.4 kWh FWD)Electricity1502661-speed automatic
Electric motor (71.4 kWh AWD)Electricity1603371-speed automatic

Electric diversity vs. certainty ⚡

While the Kia EV6 impresses with a wide range of power outputs and super-fast 800V charging, the Toyota bZ4X bets on proven reliability and an efficient drive ideal for calmer drivers.

Choosing the right motorization for electric vehicles is critical for your long-term satisfaction. It's not just about torque and power, but primarily about daily efficiency, charging speed on the road, and the reliability of the entire system. While Kia builds on cutting-edge 800V network technology for lightning-fast charging, Toyota relies more on a very conservative approach to battery protection. The following recommendations for roughly four-year-old used cars from the first years of production are based on real-world practice, vehicle behavior in cold weather, and feedback from owners themselves.

For the Kia EV6, we recommend: 77.4 kWh RWD, 168 kW

For the CV generation (2021–2024), the version with the larger battery (77.4 kWh) and rear-wheel drive (RWD) is clearly the best choice on the used car market.

  • Why it's the best choice: The 168 kW (228 hp) output is perfectly sufficient for a dynamic, responsive drive, while the absence of a front electric motor saves weight and significantly reduces real-world consumption. In practice, the car achieves one of the best power-to-range ratios in its class, where you can commonly exceed the 400 km real-world range limit on a single charge in combined driving.
  • Technical advantages: The main triumph of the EV6 is its 800V electrical architecture. When connected to an ultra-fast DC charging station, the car can recharge from 10 to 80% in just 18 minutes thanks to its support for extremely high charging power. Furthermore, the charging curve for the RWD version is impressively flat.
  • Who it's for: A perfect choice for drivers who frequently cover long highway distances, use public fast chargers, and don't want to spend unnecessary time waiting on the road.
  • What to watch out for: In the first years of production, the E-GMP platform had a known "teething problem" with the ICCU (Integrated Charging Control Unit) and the management of the standard 12V battery. If the module fails, the small 12V battery stops charging from the large traction battery, the car reports an error after stopping, and you won't be able to start it again.
    How to verify: An official recall campaign was announced for this. Before buying a used EV6, always ask the dealer to check the VIN code in an authorized Kia service center and ensure that the control unit has undergone a software update or that the module has been preventively replaced.

For the Toyota bZ4X, we recommend: 71.4 kWh FWD, 150 kW

For the EAM1 generation (offered primarily since 2022), despite established conventions, the basic front-wheel-drive (FWD) version with 150 kW (204 hp) will surprisingly bring you the most joy.

  • Why it's the best choice: Although Toyota customers usually prefer all-wheel drive (AWD), it doesn't pay off for the bZ4X in the early years. AWD adds a negligible increase in total power (to 160 kW) but noticeably reduces the overall efficiency of an already average range and brings higher consumption. For normal driving, it doesn't make sense to pay extra for it.
  • Technical advantages: Mechanical durability and robustness are at an exemplary level. However, an important fact is that front-wheel-drive models in the early stages of production received a different type of battery cells (from Panasonic). These cells show a significantly better and more stable charging curve in real-world operation, especially in the winter months. The FWD model also boasts an exceptionally quiet, comfortable, and supple chassis that perfectly irons out bumps.
  • Who it's for: For more conservative and calmer drivers looking for a spacious, reliable, and durable family SUV. It will suit those who plan to use the car primarily for suburban commutes, charge it slowly at home overnight from a wallbox, and only occasionally undertake long "road trips" with public charging.
  • What to watch out for: In the beginning, Toyota deployed extremely conservative battery management software (BMS). The vehicle lacked the option for manual battery preheating and rarely exceeded 50 kW on public DC chargers in cold weather (despite promising 150 kW on paper), which meant very long charging times on longer trips in winter.
    How to verify: The automaker addressed the situation with a widespread software update that adjusted the battery's charging tolerance and added user features. During the test drive, check the display in front of the driver. If it shows detailed battery charge percentages (and not just the estimated range in km), the vehicle has already undergone this key update. For older used cars where this is not the case, head to an authorized service center immediately after purchase for a free update.

Real Fuel Consumption

The difference between official consumption values provided by manufacturers and real-world data from daily operation is often vast for electric vehicles, especially when driving on the highway or in colder weather. While official figures according to the WLTP methodology for roughly four-year-old used cars from 2021 to 2024 promise a highly optimistic consumption of 14.4 to 16.2 kWh/100 km for the Toyota bZ4X and 16.5 to 17.2 kWh/100 km for the Kia EV6 depending on the version, the reality behind the wheel tells a slightly different story. To get a more accurate and objective picture, we used average user data from the well-known crowdsourcing portal Spritmonitor.de, which very faithfully reflects the daily use of these electric vehicles.

Data source: Spritmonitor.de

Model and powertrainAverage consumption (kWh/100 km)
Kia EV6 58 kWh RWD17.8
Kia EV6 77.4 kWh RWD/AWD19.5
Toyota bZ4X FWD19.8
Toyota bZ4X AWD21.2
Kia EV6 GT (430 kW) AWD24.8

When interpreting real-world data, we encounter a rather surprising trend. Although the Kia EV6 has a bulkier build and, in many respects, higher performance, it manages precious energy more efficiently than its Japanese competitor. The most economical choice remains the base Kia EV6 with the 58kWh battery, but even the most popular version with the larger 77.4kWh battery maintains an excellent average below 20 kWh per 100 km. Conversely, the Toyota bZ4X pays the price for a less efficient electric powertrain; for the all-wheel-drive (AWD) model, consumption easily exceeds the 21 kWh mark, which, combined with a smaller usable battery capacity, noticeably limits its real-world range. The exception to the rule is, of course, the brutal Kia EV6 GT, where the price for supercar dynamics uncompromisingly demands nearly 25 kWh.

For average users, these numbers have a clear impact. If you are looking for an electric car exclusively for the city and suburban roads, you will only feel the difference in consumption marginally, and both models will serve you excellently. However, for drivers who regularly tackle long highway routes, or for economically minded used car buyers, the Kia EV6 is a much more sensible choice. The Toyota bZ4X consumes a surprisingly large amount of energy at higher speeds, which directly leads to more frequent and longer stops at charging stations.

Real-world energy consumption thus plays an important role in this comparison and represents the proverbial tipping of the scales in favor of the South Korean model. Buying a four-year-old used Kia EV6 promises not only lower electricity bills but, thanks to excellent aerodynamics and a more advanced powertrain architecture, also brings significantly smoother long-distance travel.

Price Range and Used Car Offerings

When looking for a used electric car approximately 4 years old (model years 2022 to 2023), you are choosing from the first generation of these models from both manufacturers. While the Kia EV6 (CV generation) arrived on the market in 2021 and immediately sparked huge interest, the Toyota bZ4X (EA10 generation) followed slightly later in 2022 as the Japanese giant's first global battery electric vehicle.

The different technological approaches of the two carmakers are clearly reflected in how both models hold their value on the used car market after years of operation.

Kia EV6 (1st generation, 2021–present)

The South Korean crossover benefits from the advanced E-GMP platform. Thanks to its 800V architecture, which still ensures above-standard fast charging today, the car remains in high demand and holds its residual value exceptionally well.

  • Price range (~4-year-old vehicles): €29,000 – €37,000
  • Market availability: Very good. Due to its earlier market entry and higher sales, the supply of used cars is quite broad.
  • Most common versions: The market is dominated primarily by versions with the larger 77.4 kWh battery in the popular Earth trim or the sporty GT-Line.
  • Value drop: Among the slowest in the electric crossover class. Fast charging makes it a "future-proof" investment.

Toyota bZ4X (1st generation, 2022–present)

For its electric debut, Toyota took a slightly more conservative path (400V architecture and a slower charging curve), which has logically been reflected in the used car market. The loss of value in the first few years is somewhat steeper here, but this represents a huge opportunity for second-hand buyers.

  • Price range (~4-year-old vehicles): €25,000 – €33,000
  • Market availability: Weaker than the Kia, as the model went on sale later and initially struggled with lower sales volumes.
  • Most common versions: You will often come across front-wheel drive (FWD) models with 150 kW of power and a 71.4 kWh battery.
  • Value drop: Faster depreciation compared to the EV6 means that a four-year-old Toyota can often be purchased significantly cheaper than its Korean competitor.

Quick used market comparison

Model (1st generation, ~2022)Approximate price (€)Rate of value lossMain advantage of a used car
Kia EV629,000 – 37,000SlowTechnological obsolescence is minimal thanks to 800V
Toyota bZ4X25,000 – 33,000FasterExcellent price/performance ratio due to faster price drop

Electric Kia holds its value better 💰

While the Kia EV6 holds its value very well thanks to its advanced 800V architecture, a used Toyota bZ4X represents a surprisingly affordable path to a spacious electric SUV due to its faster price decline.

Safety and Euro NCAP Rating

When choosing a family electric car on the used car market, safety plays a key role. Both the Kia EV6 and Toyota bZ4X boast a maximum five-star rating from the independent Euro NCAP organization. However, it is important to remember that testing protocols evolve and become stricter over time, so percentage results from different years cannot always be objectively compared. Modern tests place much greater emphasis on active accident prevention, emergency scenarios at intersections, and cyclist detection capabilities, which was not usually the rule for older vehicles.

In the case of these two models, which typically appear on the current market as roughly four-year-old used cars, we have ideal conditions for a direct comparison. Both cars underwent crash tests in the same year – 2022. Their results were therefore subject to absolutely identical, very strict criteria including modern frontal collision simulations and interaction with pedestrians. Since Euro NCAP ratings are standardly valid for six years, the safety certification of both vehicles is fully up to date and will not expire until 2028.

A Detailed Look at Safety Results

Kia EV6 excels in passive safety and adult occupant protection, where it performed excellently with a result of 90%. The car's cabin remained highly stable during a frontal impact and reliably protected the critical body parts of the passengers. However, the car lost valuable points in the category of protection for vulnerable road users (64%), which is due, among other things, to the absence of a so-called active hood to mitigate the consequences of a collision with a pedestrian. Nevertheless, its safety assistance package with a rating of 87% reliably covers most common risks.

Toyota bZ4X, on the other hand, offers more balanced performance across all tested disciplines. Although it lags slightly behind the Kia in adult protection (88%), it fully makes up for it with an excellent score in child protection (87%) and, above all, significantly better protection for pedestrians and cyclists (79%). Its rating for safety assistance systems (91%) is then completely unrivaled, thanks to the standard and highly sensitive package of active safety features called T-Mate.

If we are looking for a winner in terms of comprehensive protection based on current standards, both electric cars offer the best of 2022. However, the Toyota bZ4X is a step ahead as a more complete modern safety package, especially if protecting surrounding pedestrians and top-tier accident prevention are priorities for you.

ParameterKia EV6Toyota bZ4X
Year of testing20222022
Adult protection90 %88 %
Child protection86 %87 %
Vulnerable road user protection64 %79 %
Safety assistance systems87 %91 %

Safety First 🛡️

Both cars offer a top level of passive and active safety from 2022, but the Toyota bZ4X has a slight edge thanks to better pedestrian protection and more sophisticated accident prevention assistance systems.

Comparison of Interesting Equipment Features

In addition to standard equipment, each model offers several unique features that showcase their different approaches to innovation and can be absolutely decisive for customers when choosing a family electric vehicle.

Kia EV6: 800V Architecture and Mobile Power Plant Function

  • Charging and electronics (V2L): The Kia EV6 is built on the E-GMP platform, which utilizes advanced 800V architecture. In practice, this allows for extremely fast charging from 10 to 80% in just 18 minutes on ultra-fast chargers. A total highlight for everyday life is the V2L (Vehicle-to-Load) function. The car can act as a giant power bank with an output of up to 3.6 kW, so you can power laptops, electric grills, camping equipment, or even provide an emergency charge to another electric vehicle.
  • Infotainment and telematics: The dashboard is dominated by two elegantly connected 12.3-inch curved displays. The advanced technological equipment is highlighted by a head-up display with augmented reality (AR), which projects navigation arrows and assistant warnings so that they seemingly lie directly on the road in front of the driver.
  • Smart design and ergonomics: A very clever detail is the integrated touch panel on the center console, which can be switched between controlling the dual-zone automatic climate control and infotainment shortcuts at the touch of a button. This saves space without the driver losing physical buttons.
  • Sporting pinnacle: The model range also offers the extreme EV6 GT version with 585 hp and acceleration from 0 to 100 km/h in 3.5 seconds. This adds an electronic limited-slip differential (e-LSD) and a special "Drift Mode," fully satisfying even the most demanding sporty drivers.

Toyota bZ4X: Solar Technology and Off-road Ambitions

  • Chassis and all-wheel drive (X-MODE): Toyota joined forces with Subaru during the development of the bZ4X, which is reflected in its exceptional capabilities off paved roads. The all-wheel-drive version is equipped with the X-MODE system featuring Grip Control. Compared to standard family electric vehicles, the Toyota bZ4X offers unexpectedly confident performance in terrain, deep snow, or mud.
  • Innovation for energy saving: In winter months, electric vehicles lose range due to heating. Toyota has therefore deployed an innovative radiant heating system for the legs and knees of front-seat passengers. This system provides a feeling of warmth much faster and consumes significantly less energy than traditional hot air blowing through the air conditioning.
  • Solar roof: A very interesting optional feature (or on top trims) is the solar roof. It can generate emission-free energy directly into the car's battery and, according to the manufacturer, can add up to 1,800 km of range per year completely for free under ideal conditions.
  • Battery life guarantee: The brand prides itself on long-term reliability. The special design of the battery pack and advanced liquid thermal management are designed with such a margin that Toyota promises to maintain at least 90% of the original battery capacity even after 10 years of operation or 240,000 kilometers driven.
  • Advanced steering: In selected markets and certain versions, Toyota introduced the revolutionary "Steer-by-wire" steering system (with no mechanical link between the steering wheel and the wheels) combined with a futuristic yoke-shaped steering wheel (Yoke). The system allows for full lock without the need to reposition hands on the steering wheel.

Key Advantages and Disadvantages

Kia EV6

Pros

800V architecture enabling extremely fast charging (from 10 to 80% in just 18 minutes)

Great driving characteristics and dynamics, especially in all-wheel-drive versions

V2L (Vehicle-to-Load) function, which allows powering common electrical appliances from the vehicle

Above-standard interior space with a flat floor thanks to the dedicated E-GMP electric platform

Extremely quiet interior even at highway speeds

Cons

Limited headroom for rear passengers due to the sporty sloping roofline

Poorer rear visibility through the narrow window and missing rear wiper (on earlier model years)

Combined touch panel for climate control and radio requires getting used to and distracts attention

Very small front trunk (frunk) on all-wheel-drive versions

The Kia EV6 is a technologically advanced electric car that will thrill drivers looking for fast charging, attractive design, and an engaging driving experience. It is an ideal choice for those who often travel long distances and want to spend the absolute minimum time at charging stations.

Toyota bZ4X

Pros

Renowned brand reliability with an unrivaled extended traction battery warranty program (up to 1 million km / 10 years with regular servicing)

Very capable all-wheel-drive system (X-MODE) developed in cooperation with Subaru

High suspension comfort that excellently filters out bumps

Generous legroom for rear-seat passengers

Cons

Slower real-world fast charging (DC) speed and a steep drop in the charging curve, especially in cold weather

Shorter real-world range and overall slightly higher consumption compared to direct competition

Smaller luggage compartment volume (452 liters), absence of a classic glove box, and missing front trunk

Specific instrument cluster position, which may be obscured by the steering wheel rim for some body types

Toyota bZ4X will appeal more to calmer and pragmatic drivers who appreciate the maximum assurance of long-term reliability, excellent comfort, and above-average capabilities in light terrain. It is a very comfortable family SUV for everyday use, but you have to accept compromises regarding range and charging speed on long trips.

Common Problems and Owner Complaints

Based on long-term user feedback, service reports, recall records, and findings from professional technical inspections, we have compiled an overview of the most common problems you should watch out for with both models.

Kia EV6 is among the technologically highly advanced electric cars, yet several specific defects reported by owners appear.

  • Charging and the ICCU system: The most common and discussed issue is the failure of the Integrated Charging Control Unit (ICCU). This defect can lead to rapid discharge of the 12V battery and subsequent inability to start the car or charge it. The manufacturer addresses the situation in affected vehicles with software updates or complete replacement of this unit under warranty.
  • Charging port overheating: During slow home AC charging, especially at higher power levels (around 11 kW), the charging port may overheat. The car's software then significantly slows down or completely interrupts charging for safety reasons.
  • Air conditioning and thermal management: There are cases of cabin heating failures, usually caused by faulty heat pumps or refrigerant leaks. For this reason, a thorough independent technical inspection of the car is essential before buying a used unit, which physically checks the system's tightness and full functionality of the air conditioning.
  • On-board electronics: A small percentage of users complain about the failure of the amplifier in the optional premium Meridian audio system.

Kia EV6: Watch out for electronics and charging history

Although it is an overall reliable car with a sophisticated drivetrain, when buying a used one, it is absolutely crucial to check the car's history regarding potential ICCU module failure and the condition of the 12V battery. Fortunately, most of the teething problems of this model are already addressed by factory recalls and software patches.

While Toyota is synonymous with bulletproof reliability in the automotive world, its first fully electric model, the bZ4X, did not avoid some unpleasant teething pains during its debut.

  • Chassis and wheel attachment: The very first units produced in 2022 faced a worldwide and quite serious recall. The reason was the loosening of wheel bolts during sharp braking or cornering, which could lead to a wheel falling off while driving. Toyota solved the problem relatively quickly by replacing the entire hubs and fixed bolts with innovative components.
  • Battery and real-world range: Although not a technical fault in the true sense of the word, the most common complaint from owners is the real-world range of the car, which significantly lags behind the stated paper values (WLTP). The problem worsens extremely in the winter months due to inefficient thermal management.
  • DC charging speed: Fast charging in used bZ4X models, especially in all-wheel-drive (AWD) versions, suffers from very conservative software and aggressive power limiting after reaching approximately 80% capacity. In low temperatures, fast charging can be unusually lengthy.
  • On-board software shortcomings: Despite modern trends, the first cars were unable to display the exact battery charge percentage on the instrument cluster (they only showed range). This was later corrected by a major software update. A detailed physical inspection of the used car directly at the point of sale will reliably reveal whether the car being purchased has all the current updates and whether the wheel hub campaign has been resolved.

Toyota bZ4X: Conservative software as a price for longevity

After fixing the initial problems with wheel attachment, it is a mechanically durable car without major design flaws. Its main disadvantage remains poorer battery thermal management and slow charging in winter, with which Toyota tries to prevent battery degradation at the expense of user comfort.

Tips for Buying a Used Car

When buying a used car, a thorough inspection is key, and this is especially true for modern electric vehicles. Here are some specific points to focus on for these two models, which is why a comprehensive car inspection is always useful before making a final decision.

When choosing a Kia EV6:

  • ICCU module recall and 12V battery status:
    On the E-GMP platform, the ICCU (Integrated Charging Control Unit) is responsible for charging both the high-voltage and the standard 12V battery. In earlier model years, failures occurred, leading to a complete discharge of the 12V battery and immobilizing the vehicle. Always check the service history to see if the car has undergone the recall, software updates, and any potential module replacement.
  • PTC heater and air conditioning functionality:
    Some models from the first years of production suffer from failures of the electric heating element. During the test drive, turn the heater to the maximum temperature and ensure the car starts blowing hot air within a few dozen seconds. Don't forget to test the cooling as well.
  • Software update for battery preconditioning:
    Early cars from 2021 and 2022 did not have manual or automatic battery preconditioning in their software, which drastically slows down winter fast charging. Check the infotainment menu (in the EV section) to see if a new update has been installed that enables this function (a battery temperature adjustment icon will appear before arriving at a charger).
  • Meridian audio system and sound cutouts:
    Owners of higher-trim cars occasionally complain about cutouts in the premium Meridian audio, caused by a faulty amplifier (often due to moisture). During the test drive, turn on the radio, change the volume, and listen carefully for any crackling in the speakers, unpleasant noise, or complete sound dropouts.
  • Suspension component wear due to high weight:
    Electric vehicles with large batteries place excessive strain on suspension arms and ball joints. When driving over bumps or speed bumps, listen carefully for any metallic knocking or squeaking from the axles. For maximum peace of mind, a physical inspection of the car on a lift is ideal.

When choosing a Toyota bZ4X:

  • Recall for loose wheel bolts:
    The very first cars produced had a major factory defect where there was a risk of wheel bolts loosening and potentially falling off. Fortunately, the manufacturer resolved the problem quickly. Using the VIN code at an authorized service center, absolutely ensure that the car has passed this recall and the fastening mechanism has been repaired.
  • Charging speed and onboard software version:
    The first software versions in the Toyota bZ4X strictly limited the number of DC fast charges per day (often to just two), and the system was too conservative, which prolonged stops on long trips. Check the software version or service history and ensure the car received the major updates from 2023, which significantly shortened charging times and unlocked the car's full potential.
  • Actual traction battery degradation (SOH):
    Toyota promises high battery durability (max 10% capacity loss over 10 years), but with any used EV, it's better to trust real data. An independent technical inspection of the car, which reads the actual battery wear via diagnostics, will help determine the exact capacity and voltage status of individual cells.
  • Functionality and efficiency of radiant heating:
    Higher trims of the bZ4X offer unique radiant panels in the footwell (front). During the test drive, turn on this radiant heating and physically check that both panels heat evenly and do not smell of burnt dust, which occasionally happens with rarely used units.
  • Aerodynamic noise at highway speeds:
    Some drivers have reported increased whistling and aerodynamic noise around the A-pillars and large side mirrors at speeds above 110 km/h. Take the car onto a highway or expressway during the test, turn off the radio, and assess the cabin's sound insulation to ensure this won't bother you on long journeys.

FAQ: Most Frequently Asked Questions

The Kia EV6 utilizes an advanced 800V architecture, which enables ultra-fast charging from 10 to 80% capacity in just 18 minutes. The Toyota bZ4X supports a maximum charging power of up to 150 kW, so the same battery charge takes approximately 30 minutes. In terms of energy replenishment speed on long journeys, the Korean model has a significant and very noticeable advantage.

Thanks to its larger battery capacity and more sophisticated aerodynamics, the Kia EV6 offers a longer range both on paper and in reality, exceeding the 500 km mark according to the WLTP standard. The Toyota bZ4X has slightly higher electricity consumption, and in real-world conditions, you can expect a range of around 400 kilometers on a single charge. For frequent long highway trips, the Kia is therefore a more reliable and practical choice.

The Kia EV6 is slightly more practical, as it features a rear trunk with a volume of 490 liters and additionally offers a front storage space (frunk) with a capacity of up to 52 liters. The Toyota bZ4X has a basic luggage compartment volume of 452 liters and unfortunately completely lacks a front storage compartment for charging cables. However, the access to the rear of the vehicle and overall usability for common family needs are very comparable in both vehicles.

The Toyota bZ4X emerges as the more capable vehicle off the beaten path, primarily thanks to the advanced X-Mode off-road system developed in collaboration with Subaru. While the Kia EV6 also offers a very powerful all-wheel-drive system, its ground clearance and stiffer suspension tuning are primarily intended for more dynamic driving on asphalt. If you frequently drive to the mountains or navigate unmaintained roads, the Toyota will provide you with much greater confidence.

The Kia EV6 relies on connected curved screens and a very fast, user-friendly system with support for advanced driving assistants. The Toyota bZ4X is characterized by an unconventionally placed instrument cluster high above the steering wheel and the newer Toyota Smart Connect system, which, however, does not achieve the same fluidity and variability as the Korean one. Furthermore, the Kia has a major advantage in the form of the innovative V2L (Vehicle-to-Load) function, which allows it to power external electrical devices such as laptops or camping equipment from the battery.

Conclusion: Which Model to Choose?

Sources: ADAC, garaz.cz, auto.cz, autojournal.cz, autozive.cz, csas.cz

This article was prepared using artificial intelligence tools. The section guarantor is Petr Dušek.

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