2023-03-05 08:00:00
Electric vehicles perform very differently in their first general inspection (HU). This is shown by a special evaluation of the current TÜV report for the four common models BMW i3, Nissan Leaf (ZE1), Renault Zoe and Tesla Model 3. The testers found defects in the brakes and chassis particularly frequently. The Tesla Model 3 brought up the rear with the most brake defects.
Because of the battery, many electric vehicles are heavier than comparable models with combustion engines. This puts a particular strain on the axle suspensions. Brake defects also occur with above-average frequency in all electric cars examined. One reason for this is recuperation, which is used to recover braking energy in electric cars. It relieves the brakes, which, depending on the driving style, can lead to the brake pads falling asleep (reduction in the coefficient of friction). Recommendation for practice: E-car drivers should regularly brake hard to regenerate the brake pads and thus maintain full braking power.
The results of 9.6 million general inspections were included in the “TÜV Report 2023”. In the class of two to three-year-old cars, 5.3 percent fail the TÜV test with “significant defects” regardless of the type of drive and have to be presented once more following the repair. The Renault Zoe’s failure rate of 5.3 percent is exactly the average of the 130 cars tested in this age group. The Zoe’s main defect is the front axle suspension. Wishbones and tie rods and coupling rods are conspicuous. The function of the foot brake is also complained regarding more frequently than on average.
The Nissan Leaf performs better than average with a defect rate of 4.3 percent. With the Japanese, the low beam and the brake discs are conspicuous. The result places the Leaf in the top third of the ranking. In contrast, the BMW i3 ended up in the bottom third with a failure rate of 5.9 percent. As with the Leaf, it is the low beam and the brake discs of the i3 that are objected to by the experts with an above-average number of complaints during the test.
The bottom of the quartet is the Tesla Model 3. 8.9 percent of the vehicles tested fail the first general inspection. In addition to the lighting with defects in the low beam and fog lights, the brake discs of the Model 3 also have defects more often than the average of all vehicles examined. The same applies to the axle suspension. (awm)
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