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Ford S-MAX vs Mercedes B-Class

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

The Mercedes B-Class is the more reliable of the two. It fails its first MOT at age 7 18.7% of the time, against 20.3% for the Ford S-MAX.

Ford S-MAX

20.3%

fail at age 7

Rank 151 of 239 · 70k miles at 7 · 57,536 tests

Mercedes B-Class

18.7%

fail at age 7

Rank 128 of 239 · 50k miles at 7 · 60,899 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 wornAdvisory5.0%

Fluid leaking excessively and likely to harm the environment or to pose a safety risk to other road usersAdvisory4.3%

A headlamp or light source missing, inoperative or more than ½ not functioning in the case of LEDFail1.4%

A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioningFail1.1%

Seat belt buckle missing, damaged or not functioning as intendedAdvisory0.9%

Excessive fluctuation in brake effort through each wheel revolution.Advisory0.8%

A suspension joint dust cover severely deterioratedMinor3.4%

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

A suspension joint dust cover missing or no longer prevents the ingress of dirt etcFail1.9%

A suspension pin, bush or joint excessively wornAdvisory1.9%

Brake pipe damaged or excessively corrodedAdvisory1.7%

A wheel badly distorted or wear between wheel and hub at spigot mountingAdvisory1.3%