Audi TT vs Mercedes CLS

Both are coupés & GTs. First-time MOT failure at age 7, and what each one is known to fail on.

The Audi TT is the more reliable of the two. It fails its first MOT at age 7 11.6% of the time, against 18.2% for the Mercedes CLS.

Audi TT

11.6%

fail at age 7

Rank 17 of 239 · 49k miles at 7 · 71,119 tests

Mercedes CLS

18.2%

fail at age 7

Rank 115 of 239 · 64k miles at 7 · 17,327 tests

What each one fails on

Measured

The faults each records most at ages 6 to 9. Same figures as each full report.

A shock absorber damaged to the extent that it does not function or showing signs of severe leakageAdvisory3.6%

A suspension component excessively damaged or corrodedAdvisory2.6%

A shock absorber damaged to the extent that it does not function or showing signs of severe leakageFail1.1%

Fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road usersAdvisory1.0%

A suspension pin, bush or joint excessively wornAdvisory0.7%

A brake hose ferrule excessively corrodedAdvisory0.7%

A wheel bearing with excessive playAdvisory4.7%

A suspension pin, bush or joint excessively wornAdvisory4.0%

A suspension joint dust cover severely deterioratedMinor3.0%

A spring or spring component fractured or seriously weakenedFail2.6%

A wheel badly distorted or wear between wheel and hub at spigot mountingAdvisory1.8%

Engine MIL illuminated indicating a malfunctionFail1.7%