When it comes to towing trailers, electric vehicles often face technical and homologation limitations. This is exactly the case with the compared models Nissan Leaf and Opel Astra Electric. For prospective buyers planning to tow a caravan or transport heavier construction materials, the trailer weight is an absolutely key parameter that defines the overall practicality of the car.
When looking at four-year-old used cars, you will most often encounter the second-generation Nissan Leaf (designated ZE1, typically models with 40 and 62 kWh batteries). Unfortunately, this model has no officially approved towing capacity for either braked or unbraked trailers, so the exact figure is 0 kg in both cases. The situation is identical for the all-electric Opel Astra (the latest generation L, available from roughly 2023), where factory specifications also do not allow for towing a conventional trailer (maximum weight 0 kg).
This fact represents a significant practical limitation. If space for a few extra suitcases in a trailer was previously a standard for you, which was perfectly sufficient for weekend shopping or longer holidays, you will unfortunately be out of luck with the all-electric versions of these cars. At most, you can rely on homologated bike racks mounted on the tow bar, provided the manufacturer supports this optional equipment for the given model. However, a fundamental difference arises if you include other versions of the Opel Astra in your selection. Generation L offers strong alternatives in the form of internal combustion or hybrid powertrains. For example, the 1.6 Turbo Hybrid plug-in hybrid version can tow a braked trailer weighing 1,330 to 1,450 kg, and the 1.5 Diesel engine can handle a reliable maximum of 1,550 kg.
In conclusion, it can be summarized that the all-electric Nissan Leaf and Opel Astra Electric models are not built for towing trailers. If a tow bar is a key factor in your choice, you will have to opt for hybrid or conventional internal combustion variants of the Opel, while the electric Nissan Leaf will have to be excluded from your shortlist entirely.
(Note: Since the all-electric versions of both models do not have an approved towing weight, for context, the table lists the values for the available hybrid and internal combustion engines of the current generation Opel Astra L, which fully support this function.)