Earlier quoted context omitted.
So it's not reliability assessment but safety check.
It's safety, yes. To fail this test there can be any number of causes but for Tesla they specifically mention light, axle, and breaks as failure points. The 14.2% was for cars receiving their first Hauptuntersuchung (main inspection) done every 24 months (so 2-3 years old cars). If a car model has that many problems while competitors in a similar price range and use model don't, that could point to an issue with part…
Other than lights, the problem with control arms and brakes are known. Brake service is recommended and ignored because unlike VW, et all - there's not stealership model to charge you $500 a year for worthless maintenance.