Volkswagen ID.3 shows 91% battery capacity after ADAC endurance test

Volkswagen ID.3 battery retains 91% capacity after 160,000 km in ADAC test. Software updates and durability confirm its long-term efficiency.

After four years and 160,000 kilometres on the road, the Volkswagen ID.3 Pro S has successfully completed one of the most rigorous endurance tests ever conducted on an electric vehicle, carried out by Germany’s ADAC. The result: the high-voltage battery still holds 91% of its original net capacity—well above Volkswagen’s warranty threshold of 70% for eight years or the same mileage.

The testing, conducted at ADAC’s Test and Technology Centre in Landsberg am Lech, pushed the car hard. Over 40% of charging sessions used fast-charging stations, often topping the battery off to 100%. The vehicle was also left plugged in at full charge for extended periods—contrary to best practices. Yet, the battery showed no significant signs of wear.

Compared to other EVs, the ID.3 performed solidly. While it lost about 1% every 14,000 km, Tesla models show similar degradation only every 26,800 km. Given the demanding test conditions, the ID.3’s resilience is noteworthy.

Software played a critical role. Over the course of the test, the ID.3 received several OTA updates—boosting charging power to 170 kW, improving energy efficiency in cold weather, and optimising short-distance consumption. These improvements were especially valuable during winter drives at 0 to 5°C.

The vehicle’s body, suspension and steering components also remained in good shape, despite the mileage. The ADAC test proved not only the battery’s durability but also the long-term structural integrity of the ID.3.

This was the first long-term endurance test of a Volkswagen ID family vehicle. Beyond showcasing battery reliability, the trial reinforced the importance of regular software updates in preserving EV performance over time.

Interestingly, the endurance-tested ID.3 now shares the spotlight with the newly released ID.3 GTX FIRE+ICE—a limited edition electric model created in collaboration with BOGNER FIRE+ICE, inspired by the classic 1990 Golf II Fire and Ice. Only 1,990 units will be made, featuring dramatic styling, dual interior colour themes, and up to 326 PS of power.