Which cars are worst at passing their first MOT (Popular Models Only)

Cars take their first MOT test on the third anniversary of their registration and thereafter on the anniversary of their last MOT, which in this case is Model year 2021

‘Popular models only’ option includes vehicle models with more than 5000 MOT test results. ‘All models’ option includes vehicle models with more than 500 MOT test results.

We remove non-model specific issues (e.g. Tyres) from these failure stats. For example, if a car failed on just illegal tyres, we switch it from a fail to a pass.