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2012 Mercedes-Benz C-Class: MOT pass rate and common faults

25,670 initial MOT tests in 2025 on cars first used in 2012 · DVSA data · For guidance only · How we count

67.4%passed first time

Share of initial MOT tests passed with no repairs. Repairs made at the test centre count as a fail. 95% range 66.8% to 68.0% (±0.6 points).

That is 3.9 points above the average for all vehicles first used in 2012 (63.5%). These cars were about 13 years old at the test.

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Failure areas compared with all 2012 vehicles

Compared with all vehicles first used in 2012, failures are more common in suspension (1.1×), brakes (1.5×), tyres (1.2×) and noise, emissions, leaks (1.3×), and less common in lights and electrics (0.4×), windscreen, wipers, mirrors (0.4×), body, chassis, structure (0.3×) and steering (0.1×). Other differences are within the margin of error.

Failed tests with a fault in each area, per 100 tests. The right-hand column shows how many times as often as all vehicles first used in 2012.

  1. Suspension15.9 in 100 tests1.1× compared with 14.4 in 100 for all vehicles first used in 2012
  2. Brakes11.9 in 100 tests1.5× compared with 8.1 in 100 for all vehicles first used in 2012
  3. Tyres8.2 in 100 tests1.2× compared with 7.0 in 100 for all vehicles first used in 2012
  4. Lights and electrics6.7 in 100 tests0.4× compared with 15.8 in 100 for all vehicles first used in 2012
  5. Noise, emissions, leaks4.8 in 100 tests1.3× compared with 3.8 in 100 for all vehicles first used in 2012
  6. Windscreen, wipers, mirrors1.9 in 100 tests0.4× compared with 4.9 in 100 for all vehicles first used in 2012
  7. Seat belts and airbags1.3 in 100 tests– no reliable figure for all vehicles first used in 2012
  8. Body, chassis, structure1.3 in 100 tests0.3× compared with 4.6 in 100 for all vehicles first used in 2012
  9. Wheels0.8 in 100 tests– no reliable figure for all vehicles first used in 2012
  10. Number plates and VIN0.4 in 100 tests– no reliable figure for all vehicles first used in 2012
  11. Steering0.4 in 100 tests0.1× compared with 2.8 in 100 for all vehicles first used in 2012

All vehicles first used in 2012: the 197 models in our data, 1,653,623 tests (96.5% of all 1,714,195 tests on vehicles first used in 2012). Areas with fewer than 50 failures in a model aren't published, so an area is only compared when that leaves the all-vehicles figure at most 10% short; otherwise it shows –.

Typical mileage at test104,300

Median odometer reading at the 2025 MOT test, in miles. Half had more and half had less.

What MOT data can't tell you about any 2012 Mercedes-Benz C-Class

Outstanding finance, write-offs, theft and plate changes aren't in MOT records. For a particular car, you need a history check.

Compare history checksWhat MOT history doesn't show

Other Mercedes-Benz C-Class years

Mercedes-Benz C-Class: every year, common faults and what to check

Other cars first used in 2012

Check a 2012 C-Class you're looking at