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Mercedes C-Class vs Vauxhall Insignia

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

The Mercedes C-Class is the more reliable of the two. It fails its first MOT at age 7 17.5% of the time, against 23.1% for the Vauxhall Insignia.

Mercedes C-Class

17.5%

fail at age 7

Rank 104 of 239 · 65k miles at 7 · 293,182 tests

Vauxhall Insignia

23.1%

fail at age 7

Rank 182 of 239 · 79k miles at 7 · 177,292 tests

What each one fails on

Measured

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

A suspension pin, bush or joint excessively wornAdvisory8.1%

A suspension pin, bush or joint excessively wornFail3.0%

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

Engine MIL illuminated indicating a malfunctionFail2.5%

A transmission shaft flexible coupling excessively deterioratedAdvisory1.2%

A shock absorber damaged to the extent that it does not function or showing signs of severe leakageAdvisory0.9%

A suspension pin, bush or joint excessively wornAdvisory9.1%

A spring or spring component fractured or seriously weakenedFail6.5%

Fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road usersAdvisory5.4%

A suspension component excessively damaged or corrodedAdvisory2.7%

A shock absorber damaged to the extent that it does not function or showing signs of severe leakageAdvisory2.5%

A spring or spring component fractured or seriously weakenedAdvisory2.4%