German Study Finds Tesla Model Y Has Worst Reliability of 2022–2023 Models ... And Worse! - CleanTechnica

A recent report by TÜV, a respected German independent evaluator, reveals that the Tesla Model Y has the worst reliability among 110 car models aged 2–3 years, with a 17.3% defect rate—the highest recorded in the auto industry over the past decade. The Tesla Model 3 also performed poorly, ranking third worst with a 13.1% defect rate, only slightly better than the Ford Mondeo. These defect rates reflect significant issues that cause vehicles to fail mandatory technical inspections conducted between July 2024 and June 2025 across Germany. The study emphasizes that these results are based on a large sample of about 9.5 million vehicles and account for real-world usage differences, such as mileage and maintenance. Interestingly, most electric vehicles (EVs) performed well in the TÜV report, with models like the Mini Cooper SE (3.5% defect rate), Audi Q4 e-tron (4.0%), and Fiat 500e (4.