BMW X5 vs. BMW X7: Complete comparison 2026

The BMW X5 is a legendary premium SUV that masterfully combines dynamic driving characteristics with everyday practicality and proven luxury. Standing against it is the majestic BMW X7, which represents the absolute pinnacle of the Bavarian brand's lineup, enticing with its vast interior space, standard three rows of seats, and uncompromising opulence. In this detailed comparison, let's look at which of these family giants better suits your lifestyle and becomes the ideal choice for your garage.

Looking at the exterior dimensions, it is immediately clear who holds the role of the majestic flagship and who fulfills the role of the sportier premium SUV. While the BMW X5 (in the highly sought-after G05 generation on the used car market) represents the perfect middle ground in the large luxury SUV class, the BMW X7 (G07 generation) plays in the league of full-size family cruisers. The fundamental difference lies in the overall length – at over 5.1 meters, the X7 is a significant 229 to 259 millimeters longer than its smaller sibling.

However, a look at the width of both cars is interesting. Although the BMW X7 appears monumental and indomitable from the outside, the BMW X5 is actually a negligible 4 millimeters wider at 2004 mm. This fact, combined with a noticeably lower body structure (the X5 is 60 to 90 mm lower), gives the shorter model a much more planted and dynamic stance. Conversely, the major advantage of the larger BMW X7 is its 130-millimeter longer wheelbase. It is this generous space between the wheels that allows for the comfortable installation of a third row of seats, where, unlike the rather occasional-use solution in the X5, even adult passengers will find enough room.

In real life, these extra millimeters mean a completely different user experience. With a length safely under five meters, the BMW X5 still fits relatively easily into most parking spaces at shopping centers and does not suffer in narrow streets. The BMW X7, on the other hand, occasionally hits the physical limits of common European infrastructure and typical underground garages due to its mammoth dimensions. The choice thus clearly defines your daily territory: if you spend a lot of time in the city, you will appreciate the relative agility of the X5. But if you regularly devour highway miles with a large crew and need maximum space, the massive dimensions of the X7 easily translate into unrivaled travel comfort.

The luggage compartment area is one of the main factors that can decide the choice between the BMW X5 and BMW X7 models. Both of these premium SUVs offer top-tier luxury and comfort, but their approach to interior space differs. While the BMW X5 represents an ideal family car with a balanced ratio between exterior dimensions and interior spaciousness, the more massive BMW X7 functions as a full-fledged family cruiser. For those interested in approximately four-year-old used cars (G05 generation for the X5 and G07 for the X7, both from around 2018–2023), this means they must carefully consider how often they plan to use the full seating capacity and how much luggage they typically need to carry.

In terms of specific numbers, the difference between the two models is quite noticeable. The BMW X5 offers an excellent 650 liters of volume in its standard configuration, which can be increased to 1870 liters by folding the rear seats. However, it is necessary to mention that in the popular plug-in hybrid version (such as the xDrive45e), the base capacity is reduced to 500 liters due to battery placement, with the maximum volume dropping to 1720 liters. In contrast, the BMW X7 is primarily a seven-seater. When all three rows of seats are occupied, a rather modest 326 liters remain for luggage. But if you electrically fold the third row into the floor and use the vehicle as a five-seater, you get 750 liters – that's a full 100 liters more than in the standard X5. The maximum transport capacity after folding both the second and third rows then reaches a staggering 2120 liters, representing a massive difference of 250 liters in favor of the larger X7 model.

From a practical standpoint, the trunk in the BMW X5 is perfectly sufficient for weekend shopping and longer vacations for a family of four. Furthermore, the two-piece tailgate on both models makes loading heavier items easier, and its lower part can even serve as a practical bench when changing shoes. The BMW X7, however, pushes the limits of spaciousness to another level. In a five-seat configuration, it offers space for several extra suitcases, and with maximum folding, it becomes a luxury van that easily swallows even very bulky cargo. If you are looking for a more agile car for every day with a generous trunk, the X5 will be the right choice. If, however, you regularly need to combine carrying up to seven passengers with at least basic space for bags, or simply require uncompromising capacity, the BMW X7 is the clear winner.

The ability to tow a heavy trailer is often a key factor for buyers of premium SUVs of this size. Whether you plan to tow a large family caravan, a horse trailer, or a heavy boat, both the BMW X5 and BMW X7 offer top-tier parameters in this regard. Given their massive construction and powerful engines, both vehicles rank among the best towers on the used car market, yet there are important differences between them to watch out for when choosing.

If you opt for the larger BMW X7 (G07 generation), you don't have to make any compromises when choosing an engine. All available engines on the four-year-old used car market, from diesel six-cylinders (xDrive30d, xDrive40d) to the top-of-the-line petrol V8s (M50i), have a standard and maximum permitted braked trailer weight of 3,500 kg. For the BMW X5 (G05 generation), the situation with conventional internal combustion engines is identical, and it can easily handle a trailer of the same maximum weight of 3,500 kg.

However, a difference arises with specific and very popular versions of the X5. If you choose a plug-in hybrid variant, such as the xDrive45e (or the newer xDrive50e), or go for the entry-level four-cylinder diesel xDrive25d, the maximum permitted braked trailer weight drops to 2,700 kg. The X7 model does not offer these compromise engines at all.

From a practical standpoint, the value of 3,500 kg is the legislative maximum for passenger cars in Europe and provides complete freedom for towing the heaviest trailers. While the reduced capacity of 2,700 kg for the hybrid X5 is significantly lower on paper, in practice, it is still a value more than sufficient for safely towing a standard caravan, a medium-sized boat, or for transporting construction materials during weekend projects.

In conclusion, if maximum towing power is your absolute priority regardless of the chosen engine, the BMW X7 represents certainty in every situation. However, the BMW X5 is a fully equal competitor with traditional powertrains and only loses slightly if you prefer the more eco-friendly plug-in hybrid drive.

Both models, the BMW X5 and BMW X7, share the same premium CLAR platform and, in their modern generations (around 4 years old on the used market), use a top-of-the-line eight-speed automatic transmission combined with the intelligent xDrive all-wheel drive. However, the fundamental difference in engines lies in the target group. While the BMW X5 offers a wider range of powertrains, including an economical four-cylinder diesel and highly sought-after plug-in hybrid variants, the majestic BMW X7, as the brand's flagship, completely ignores four-cylinders and plug-in hybrids. Instead, the X7 focuses exclusively on massive and refined six-cylinder and eight-cylinder engines that can easily move the vehicle's higher weight. Furthermore, most engines in both models utilize 48V mild-hybrid technology, which improves throttle response and helps reduce fuel consumption and emissions. The choice between these two models from an engine perspective thus depends on whether you prefer maximum flexibility, efficiency, and the possibility of electric driving with the X5, or uncompromising luxury with large-displacement engines and immense towing power with the X7.

BMW X5 Engines (G05 generation)

The range of engines for the BMW X5 G05 generation is exceptionally diverse and will satisfy both budget-conscious drivers focused on fuel consumption and lovers of raw power. The base of the range is the two-liter four-cylinder diesel xDrive25d, which is ideal for drivers looking for the lowest possible operating costs. However, the absolute bestsellers on the used market are the reliable diesel six-cylinders xDrive30d and the more powerful xDrive40d. A specialty of the M Performance division was the monstrous quad-turbo diesel engine, the M50d. If you prefer petrol, the excellent six-cylinder xDrive40i is available, along with the absolute pinnacle in the form of the V8 M50i, or the M60i after the 2023 update. Special attention in the used car market is deserved by the popular plug-in hybrids xDrive45e (later improved to xDrive50e). These combine a petrol six-cylinder with an electric motor and a massive battery, making them the ideal choice for drivers with the possibility of home charging and regular suburban commuting.

From the perspective of model year availability, keep in mind that the top-tier diesel M50d was discontinued at the end of 2020 due to stricter emissions. The plug-in hybrid version xDrive50e and the M60i engine entered the market only with the facelift in 2023.

BMW X7 Engines (G07 generation)

The powertrains for the luxury BMW X7 fully correspond to the size, premium concept, and significant weight of this family highway cruiser. The base of the range consists exclusively of silky-smooth inline six-cylinders. The diesel starting point was initially the xDrive30d model, which, however, soon handed over the main role on the market to the significantly more powerful xDrive40d version with mild-hybrid assistance. Just like with the smaller X5, for the first two years, it was possible to equip the car with the iconic M50d engine with four turbochargers, whose production ended for good in 2020. For fans of the smell of petrol and absolute silence on board, the six-cylinder xDrive40i is ready. A true performance feast is then provided by the massive turbocharged V8 – this was designated as the M50i until 2022 and subsequently renamed the M60i as part of the facelift, featuring a completely new mild-hybrid system to eliminate turbo lag. No version of the X7 was offered as a plug-in hybrid.

Note on availability: As with the X5, the M50d and base xDrive30d variants were only on sale in the early stages of the model (2018–2020) and are giving way to the more confident and updated xDrive40d diesel version among approximately 4-year-old used cars.

Choosing the right power unit is key to long-term satisfaction, reliability, and maintaining reasonable operating costs for premium SUVs. Both Munich SUVs rely on a proven chassis architecture and offer fantastic straight-six engines that absolutely dominate the used car market. While the lighter and more agile X5 (G05 generation) is perfectly fine with the more basic but extremely efficient engine options, the gigantic X7 (G07 generation) requires a bit more torque due to its massive weight and aerodynamic drag to maintain its typical road presence. For four-year-old used cars, we are talking about members of the B57 and B58 engine families, which mechanics consider some of the most reliable units currently offered by the automotive industry.

For the BMW X5, we recommend: xDrive30d (210 kW / 286 hp)

This three-litre straight-six diesel has long been the most rational and sought-after choice within the G05 generation. It offers an absolutely ideal compromise between dynamics, everyday usability, and operating costs. With the arrival of mild-hybrid technology (from 2020, which exactly matches the 4-year-old used car market), it boasts 210 kW and a massive 650 Nm of torque. The car thus has enough power for safe overtaking, while real-world fuel consumption in combined driving stays at fantastic values around 7.5 to 8.5 litres per 100 km. The mechanical reliability of the B57 block is exemplary; however, as with any modern diesel, one must check the condition of the DPF filter and the functioning of the EGR valve when buying a used car. The risk of rapid soot buildup is primarily present in vehicles that the previous owner used for short city trips. This threat can be easily mitigated by regularly including longer motorway journeys, which allow for thorough filter regeneration. This engine is absolutely perfect for drivers who cover long distances, are looking for a solid family workhorse, but also appreciate the classic Munich emphasis on a more dynamic driving style.

For the BMW X7, we recommend: xDrive40d (250 kW / 340 hp)

In the case of the monumental X7 model, whose kerb weight easily exceeds 2.4 tonnes and whose aerodynamics resemble a luxury apartment block, a more powerful version of the diesel six-cylinder is practically a necessity. The base 30d model was discontinued from the X7 price list in 2020, and we consider the xDrive40d to be the best engine for this car on the secondary market. Thanks to two-stage turbocharging technology, it generates 250 kW and a massive 700 Nm of torque. This power gives the giant SUV effortless ease and confidence even when fully loaded with family and luggage. In real-world driving, you can expect consumption between 8.5 and 9.5 l/100 km, which is an excellent result for such a huge and luxurious vehicle (petrol V8s typically demand 13 litres or more). However, the system with two turbochargers and an integrated mild-hybrid is more complex in design. The basic rule for the long life of this engine and the prevention of turbocharger bearing damage is to absolutely ignore the factory oil change interval (up to 30,000 km) and shorten it to a proper 15,000 km or 1 year. The xDrive40d is the ideal choice for generous motorway mile-munchers, large families requiring a seven-seat layout, and owners of caravans or heavy trailers.

When choosing a large premium SUV, fuel consumption is a frequently discussed topic, especially because official figures provided by manufacturers can differ significantly from real-world operation. For an objective comparison of both models, we relied on real data from drivers themselves, primarily from the popular community portal Spritmonitor.de, which faithfully reflects everyday use. We focused exclusively on generations and engines typical for approximately four-year-old used cars, i.e., the highly sought-after BMW X5 (G05 generation) and BMW X7 (G07 generation) models from 2020 to 2023.

Interpretation of real data

Interesting trends clearly emerge from the collected values. Diesel six-cylinders, which traditionally dominate the European market in the large SUV segment, prove to be extremely efficient. Both the base and more powerful diesels in the BMW X5 can achieve real-world combined consumption well below the 8-litre mark, which is an excellent result for a car weighing over two tonnes. The heavier, taller, and more massive BMW X7 logically requires more energy – the difference compared to the smaller X5 with the same engine (for example, the xDrive40d) is around 0.8 litres of diesel more.

Petrol variants, on the other hand, require a significantly higher fuel supply. Even the base six-cylinder in the X7 easily exceeds the 10-liter mark, and the top-tier V8s designated M50i in both models commonly approach 12 liters. A completely specific category is the plug-in hybrid version, the X5 xDrive45e, with a paper and community-averaged consumption of 1.2 l/100 km. However, this extremely low value can only be achieved in the real world with consistent daily charging and shorter routes; on longer trips with a depleted battery, consumption quickly aligns with classic petrol versions.

What this means for the average user

For buyers in the used car market, these values represent a clear guide for choosing the appropriate engine:

• Highway drivers and families on long trips: If you are looking for a vehicle for long hauls, regular family holidays, or commuting across the country, the diesel versions (xDrive30d or xDrive40d) are an unbeatable choice in terms of range and your wallet.
• City traffic and lower mileage: Petrol engines (xDrive40i) make sense for lower annual mileage or for customers for whom the fuel budget does not play a major role and who prefer absolute acoustic comfort.
• Suburban commuting with home charging: The plug-in hybrid will be primarily appreciated by drivers with the possibility of easy charging at home or at work, who cover most of their daily kilometers purely on electricity.

Does fuel consumption play a key role in the selection?

Overall, it can be said that fuel consumption primarily illustrates the physical differences between the two models – the worse aerodynamics and higher weight of the larger BMW X7 inherently always require roughly 10 to 15% more fuel. In the context of the total costs of acquisition, insurance, and servicing of such luxury used vehicles, consumption should not be the main deciding factor. The key argument for acquiring an X7 instead of an X5 thus remains primarily the need for a full-fledged third row of seats and maximum interior space.

When choosing a premium second-hand SUV, it is crucial to focus on an adequate age and generation that makes the most sense in the used car market. In this comparison, we will focus on models approximately 4 years old, i.e., vehicles with a production year around 2021 to 2022. In this period, for the BMW X5, we are talking about the extremely popular G05 generation (pre-facelift), and for its larger sibling, the BMW X7, the G07 generation (also before modernization). Both cars share the chassis platform and engine range, but their pricing policy and value depreciation differ.

Price range and market situation

The price difference between the two models in the used car market more or less mirrors the situation that prevailed with new vehicles. As the brand's flagship, the BMW X7 requires a noticeable premium even after several years. On the other hand, the absolute drop in value is more massive for a fully equipped X7, which makes it a very interesting offer from a used car perspective.

Note: The prices listed are indicative and reflect the current state of the used car market for models approximately 4 years old.

BMW X5 (G05): More affordable luxury and a huge selection

The BMW X5 generation G05 is represented in huge numbers on the used car market. Thanks to this, there is plenty to choose from, and prices are pushed further down.

• Base models: The entry point into the world of a four-year-old X5 are models with higher mileage (often over 150,000 km), typically in xDrive30d versions. These vehicles start just above the €45,000 mark.
• The golden middle ground: For around €61,000, you can get very well-equipped models with reasonable mileage. Here, the xDrive40d engine reigns supreme, and the xDrive45e plug-in hybrid is also extremely popular, holding its value due to high demand and economical operation.
• Top variants: Versions such as the M50i with a petrol V8 or the M50d diesel with quad-turbochargers stay around the €81,000 mark, depending on condition and equipment.

BMW X7 (G07): The flagship for a corresponding premium

The supply of BMW X7s on the secondary market is naturally thinner, which helps the vehicle hold its price better. The X7 is bought by customers requiring maximum space and comfort, which is also reflected in the average specification of the used cars offered, which tend to be much more generously equipped than the average X5.

• Entry models: The cheapest X7s from 2021/2022 start at roughly €57,000. These are usually xDrive30d or 40i versions that have undergone intensive highway use.
• Average market: Most nice and verified models range between €73,000 and €81,000. In this price range, you will often come across the more powerful xDrive40d engine, air suspension with Executive Drive Pro, and luxury Individual interiors.
• Collector and top versions: If you are looking for a V8 X7 M50i with low mileage, prepare at least €94,000 or more.

What affects the price the most?

Whether you decide on an X5 or X7, the residual value of a specific unit is fundamentally influenced by these factors:

• M Sport package: Models equipped with the sports package (more aggressive bumpers, larger wheels, sports brakes, and steering wheel) sell significantly faster and at higher prices than vehicles with a standard look (or xLine).
• Engine choice: Six-cylinder diesels are the most sought-after in the long term and represent a safe bet on the market. More complex and powerful engines lose value faster because there are greater concerns about future service costs.
• Third row of seats: While a seven-seat layout (or a luxury six-seat one with captain's chairs) is standard for the BMW X7, it is optional equipment for the X5. If you come across a used X5 with a third row of seats, expect a slightly higher price, as it is a scarce commodity sought after by larger families.

In terms of value for money, the used G05 generation of the BMW X5 is a very rational choice, offering modern technology and excellent driving characteristics for a reasonable amount. The BMW X7 remains an exclusive item, where the higher purchase price is offset by unsurpassed interior space and an aura of absolute luxury.

In the premium SUV segment, a top-tier five-star safety rating is automatically expected for both vehicles. However, when analyzing the results from independent organizations, it is always necessary to consider the specific context and the year of testing. Euro NCAP's methodology and testing protocols are constantly evolving and becoming significantly stricter over time. Therefore, percentage scores from different years cannot be directly compared. Newer testing methodologies typically include:

• Stricter frontal crash simulations using a mobile barrier.
• More demanding detection tests for vulnerable road users (pedestrians and cyclists).
• New intersection crisis scenarios for active assistance systems.

BMW X5 underwent Euro NCAP crash tests in 2018 and, according to the standards of the time, comfortably took home the full five stars. The car completely dominated in passive safety with an excellent score of 89% for adult protection and 86% for child protection. Protection of vulnerable road users and assistance systems both achieved a very solid 75%. From the perspective of today's used car market for roughly four-year-old vehicles, it is good to know that the test took place before the introduction of the latest rules. Although the validity of this official certificate formally expired at the beginning of 2025, which is common practice for older vehicle generations, the X5 continues to represent an exceptionally robust vehicle with reliable active assistants.

In the case of the larger BMW X7, you encounter a specific trait of the most expensive and luxurious cars – this model was never officially tested by Euro NCAP. The reason is the high purchase price and significantly lower sales volumes compared to more mass-market models. However, the absence of laboratory data certainly does not mean lower safety. The flagship X7 shares its key chassis architecture, extremely rigid body, and a complete army of advanced safety technologies with the X5 model. You will find identical modern systems here, from autonomous emergency braking with pedestrian detection to a sophisticated lane-keeping assistant, just without an official percentage rating.

In conclusion, both Munich SUVs provide a top-tier and highly modern safety package by current standards. While with the BMW X5 you can rely on specific excellent results and detailed data from independent crash tests, the BMW X7 benefits from its more massive construction and identical technological innovations, even though it lacks the official stamp from Euro NCAP. For demanding family use, both models represent the safest possible choice.

In addition to standard equipment, each model offers several unique features that demonstrate their different approaches to luxury and added value, and can thus be decisive for the customer in their final choice.

BMW X5: Sporty Versatility and Technological Sophistication

• Practicality and Design (Split Tailgate): An iconic feature of the X5 has been preserved in this generation. The electrically operated two-part tailgate makes loading heavy objects easier, and the lower fold-down section serves as a practical bench with a load capacity of over 200 kg – ideal for putting on ski boots or watching a sporting event outdoors.
• Chassis and Terrain (Off-Road Package): Unlike many competitors and older generations, the X5 (G05 generation) offers a full-fledged off-road package. This includes air suspension on both axles, underbody protection plates, an electronic rear differential lock, and specific driving modes for sand, rocks, gravel, or snow.
• Powertrains and Electrification (PHEV version xDrive45e): At around four years old on the used car market, the plug-in hybrid xDrive45e variant stands out. Compared to its predecessor, it received an inline-six engine and a massive battery, which realistically allows for over 70 kilometers of pure electric driving, fundamentally changing the daily user experience in the city.
• Electronics and Assistants (Reversing Assistant): A technology that continuously remembers the last 50 meters driven forward at speeds up to 36 km/h. If you get stuck in a narrow alley or a complex driveway, the car can automatically reverse out exactly along the path it arrived.
• Luxury Details (CraftedClarity): To enhance the sporty interior, the X5 could be optionally equipped with cut glass elements. The crystal gear selector with an illuminated "X," the glass start button, and the iDrive controller give the cabin an unexpected touch of exclusivity.

BMW X7: The Ultimate Space for the Whole Family

• Comfort and Interior Layout (Captain's Chairs): The X7 is a full-fledged seven-seater SUV as standard. However, for the ultimate luxury experience, a six-seat configuration could be chosen. The second row then consists of two separate "captain's" chairs with full electric adjustment, armrests, and generous space.
• Chassis (Flying Carpet as Standard): While you often pay extra for air suspension on the X5, the BMW X7 features it on both axles as standard for all engine versions. The vehicle's focus is clearly oriented towards absorbing bumps and perfect soundproofing, aided by standard acoustic glass.
• Design and technology (Sky Lounge): The Sky Lounge panoramic glass roof is a fascinating design element. More than 15,000 graphic points illuminated by LEDs are integrated into the glass. At night, the roof creates the illusion of a starry sky, and the color of the light can be changed according to the interior ambient lighting.
• Air conditioning (Five-zone system): A rarity in the automotive world. While four-zone air conditioning is common in the premium segment, the BMW X7 offers a five-zone system as an option. As a result, the third row of seats has its own control panel, its own ceiling vents, and a separate compressor, ensuring absolute comfort even for passengers in the very back.
• Infotainment and on-board systems (Integration and OTA): Both cars share the iDrive system (typically version 7 in 4-year-old used cars), but the X7 places greater emphasis on connectivity across all rows of seats, with numerous USB-C ports scattered throughout the cabin. Of course, there is the possibility of remote software updates (OTA), thanks to which the car can constantly receive new functions and improvements to assistance systems even as a used vehicle.

BMW X5

Pros:

• More agile and sportier driving characteristics thanks to lower curb weight and a shorter wheelbase.
• More user-friendly exterior dimensions for daily parking and maneuvering in European cities.
• A wider and more accessible range of powertrains, including an exceptionally well-executed plug-in hybrid (e.g., xDrive45e) with a real-world electric range of over 70 kilometers.
• Lower purchase price for used cars and more favorable long-term operating costs (fuel consumption, brakes, tires).
• Excellent ergonomics and premium interior craftsmanship that fully satisfy even very demanding users.

Cons:

• The optional third row of seats (if the vehicle is equipped with it) is quite cramped and realistically usable only for small children.
• Unlike its larger sibling, two-axle air suspension is not standard equipment on all versions.
• Smaller total luggage capacity when needing to carry bulkier family cargo on long trips.

BMW X7

Pros:

• Full seven-seat (or more luxurious six-seat) layout with surprisingly generous space for adult passengers even in the third row.
• Standard two-axle air suspension, which ensures top-tier driving comfort and a "magic carpet" effect.
• Extreme level of acoustic comfort and overall cabin soundproofing, matching luxury class sedans.
• Huge luggage space (up to 750 liters with the third row folded), ideal for long family vacations.
• Majestic appearance, distinct status, and dominant road presence.

Cons:

• Significant exterior dimensions (length over 5.1 meters and great width) significantly complicate parking in underground garages and driving in narrow streets.
• High curb weight (typically around 2.5 tons) negatively affects cornering dynamics; the car loses typical BMW sporty agility.
• Significantly higher purchase price on the used market and noticeably more expensive service tasks and consumables.
• Increased fuel consumption even for diesel engines, due to the large frontal area and significant weight of the vehicle.

Based on our own CarAudit inspections, failure statistics from service networks, and long-term user experience, we have compiled an overview of the most common problems that used car buyers should watch out for when choosing these premium SUVs.

BMW X5 (G05 generation)

The current generation of the BMW X5 is considered above-average reliable in the large SUV class, yet due to the complexity of modern technology, it faces several specific ailments.

Infotainment and electronics

• iDrive 7.0 system: In models from the start of production (2018–2020), owners often complain about occasional screen freezing, connection drops via wireless Apple CarPlay, or restarts of the entire system while driving.
• Solution: In most cases, a software update (often possible via OTA – Over The Air) helps, but for some units, it was necessary to reinstall the software directly at an authorized service center.
• Tailgate: Occasionally, the electric motors or sensors for opening the lower folding part of the tailgate malfunction.

Engines

• Diesel six-cylinders (30d, 40d - B57 engine): They are very durable but can suffer from BMW's notorious problem with the exhaust gas recirculation (EGR) cooler. Coolant leaks can occur, which in extreme cases poses a fire risk. Most cars have already undergone an official recall, but it is necessary to verify this in the service history before buying.
• Gasoline six-cylinders (40i - B58 engine): An excellent and reliable engine. Rarely, minor coolant leaks appear around the water pump or expansion tank.
• Gasoline V8s (M50i, X5 M): Higher thermal stress means faster degradation of oil and ignition modules. They may show higher oil consumption and are extremely sensitive to shortened service intervals.

Chassis and xDrive system

• Transfer case (VTG): The xDrive all-wheel-drive system is extremely sensitive to differences in tire circumference. If the previous owner drove on unevenly worn tires or poorly combined tire brands, the transfer case suffers. A typical symptom is noticeable jerking and grinding during acceleration at full steering lock. Often, changing the oil in the transfer case helps, but sometimes a rebuild is necessary.
• Air suspension: In the X5, this is optional equipment. After about five years, the first leaks in the air springs may appear; the compressor then runs dry, risking burnout.

Summary for the BMW X5: It is a very robust vehicle where most problems are rather software "bugs". More serious risks exist mainly with neglected service of the xDrive system and missing EGR recalls. A comprehensive car inspection before the purchase itself is crucial, as it will reveal any damage to chassis components.

BMW X7 (G07 generation)

BMW's largest SUV shares most of its technology and platforms with the X5 model. It therefore shares identical problems in the area of engines (EGR valves in diesels, occasional coolant leaks), but adds its own ailments stemming primarily from its significant weight and differently conceived interior.

Chassis and Tire Wear

• High weight: The BMW X7 weighs over 2.5 tons. This leads to extremely rapid wear not only of the brake pads and discs, but especially the tires.
• Inner tire edges: Particularly with the optional 22" and 23" wheels, the inner edges of the tires on both axles wear down so dramatically that the rubber looks like new on the outside, while the cords are showing on the inside. This requires very frequent checks and wheel alignment adjustments.
• Air suspension: On the X7, it is supplied as standard for both axles. The extreme weight of the vehicle means faster fatigue of the control arm bushings and air bellows, which must compensate for the movements of the massive body.

Interior and Comfort Features

• Second and third-row seats: All seats are fully electrically operated as standard. The slow electric motors often struggle with the sliding mechanism jamming, especially if an object from children falls into the rails. The popular optional "Captain's chairs" (two individual seats in the second row) can have trouble locking into place.
• Noise and seals: In some early X7 models, increased aerodynamic noise appears at highway speeds above 130 km/h. It often comes from loose or hardened seals around the giant panoramic roof or the side frameless windows.

Electronics

• As with the X5, there is the possibility of software glitches in the iDrive system; however, the X7 has a more complex multi-zone climate control and sometimes adds a multimedia system for rear passengers, which can suffer from connection drops with the main control unit in the front.

Summary for the BMW X7: As a flagship, it fulfills its role excellently, and neither the engines nor the transmissions suffer from fatal failures. The biggest threat to the wallet with a used X7 is the extreme weight, which "eats" tires and chassis parts. A thorough physical inspection of a used car on a lift is an absolute necessity for this model, as repairing a faulty air suspension can climb into the hundreds of thousands of crowns.

When buying a used car, a thorough inspection is key. Here are some specific points to focus on for these two models, although for absolute certainty, an independent comprehensive car audit is always the ideal step.

When choosing a BMW X5:

• Condition of the air suspension and xDrive transfer case: On versions with air suspension, test all height levels. The change must be smooth and without error messages. During the test drive, focus on vibrations or jerking during sharp acceleration and in tight corners, which may indicate an excessively worn xDrive transfer case.
• Electronics of the split tailgate: The BMW X5 features the iconic two-piece trunk lid. Check the electronic control of both the upper and lower parts, the smoothness of operation, and proper alignment. Problems with obstacle sensors or the lower flap not closing properly often occur here.
• Battery condition in the Plug-in Hybrid (xDrive45e): If you are buying this popular engine version, verify the state of the high-voltage battery and the real electric range in the onboard menu. Also, test the smoothness of switching between pure electric and combustion modes under load.
• iDrive infotainment stability: Check for screen freezes or spontaneous system restarts during the drive. Ensure the car has the latest software version installed, which addressed earlier issues with phone connectivity and parking camera failures.

When choosing a BMW X7:

• Chassis and brake wear due to weight: The X7 is an extremely heavy SUV, which puts significant strain on the suspension and braking system. Warped brake discs are easily detected by vibrations in the steering wheel during harder braking from higher speeds. Also, watch out for creaking and knocking from the suspension arms – a thorough physical inspection of the car on a lift is essential in this regard.
• Electric folding of the third row of seats: The interior variability in the X7 is fully electrified. Test all buttons in the trunk and at the rear doors. The motor mechanism must not make crunching sounds, and the seats must fold and straighten smoothly without jamming.
• Panoramic roof and creaking: Listen for creaking or cracking from the large sunroof over bumps. Check for signs of potential water leaks on the headliner and, in the case of the optional Sky Lounge version, verify the functionality of the LED backlighting integrated directly into the glass.
• Fluid leaks in V8 engines (e.g., M50i): If you are choosing the top-of-the-line V8 engine, be very alert for oil and coolant leaks. These often appear in the specific space between the cylinder banks (the so-called "Hot V" layout), where components suffer from immense thermal stress. A documented history of regular oil changes is crucial here.

Sources: ADAC, lidovky.cz, e15.cz, autoservis.cz, dopravniinfo.cz, autorskola.cz

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