Used car years to avoid? Below-average MOT years by model

Older vehicles fail more often, so each first-use year of a model is compared with all vehicles first used in the same year: the same-age average. A year is listed as below the same-age average only when its first-time pass rate is lower beyond the margin of error, meaning the whole 95% range (Wilson interval) sits below it. Above works the same way. Years that can't be told apart from average aren't listed here. Each model's page shows every year with its numbers.

• Models with at least one year below the same-age average226 of 367
• Models with at least one year above it244 of 367
• Models with years both below and above it106 of 367

An MOT pass rate is one signal and the individual car matters more than its model's average, so check that car's own MOT history for free and see how we count.