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2014 Mercedes-Benz C-Class: MOT pass rate and common faults

25,198 initial MOT tests in 2025 on cars first used in 2014 · DVSA data · For guidance only · How we count

75.2%passed first time

Share of initial MOT tests passed with no repairs. Repairs made at the test centre count as a fail. 95% range 74.6% to 75.7% (±0.6 points).

That is 6.6 points above the average for all vehicles first used in 2014 (68.6%). These cars were about 11 years old at the test.

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Failure areas compared with all 2014 vehicles

Compared with all vehicles first used in 2014, failures are more common in tyres (1.1×), and less common in suspension (0.9×), brakes (0.9×), lights and electrics (0.4×), windscreen, wipers, mirrors (0.5×), body, chassis, structure (0.2×) 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 2014.

  1. Suspension9.7 in 100 tests0.9× compared with 10.8 in 100 for all vehicles first used in 2014
  2. Tyres8.0 in 100 tests1.1× compared with 7.1 in 100 for all vehicles first used in 2014
  3. Brakes6.3 in 100 tests0.9× compared with 6.7 in 100 for all vehicles first used in 2014
  4. Lights and electrics4.4 in 100 tests0.4× compared with 11.5 in 100 for all vehicles first used in 2014
  5. Noise, emissions, leaks3.2 in 100 tests1.0× compared with 3.2 in 100 for all vehicles first used in 2014
  6. Windscreen, wipers, mirrors2.2 in 100 tests0.5× compared with 4.3 in 100 for all vehicles first used in 2014
  7. Seat belts and airbags0.9 in 100 tests– no reliable figure for all vehicles first used in 2014
  8. Wheels0.8 in 100 tests– no reliable figure for all vehicles first used in 2014
  9. Body, chassis, structure0.5 in 100 tests0.2× compared with 3.1 in 100 for all vehicles first used in 2014
  10. Number plates and VIN0.4 in 100 tests– no reliable figure for all vehicles first used in 2014
  11. Steering0.3 in 100 tests0.1× compared with 2.5 in 100 for all vehicles first used in 2014

All vehicles first used in 2014: the 215 models in our data, 2,266,322 tests (97.3% of all 2,330,102 tests on vehicles first used in 2014). 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 test92,800

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

After an MOT advisory

2014 Mercedes-Benz C-Class cars that passed their 2024 MOT first time with an advisory, and what their next MOT found, against similar cars that passed with nothing noted in that area. Only cars first used in 2014.

Tyres

Of 2014 Mercedes-Benz C-Class cars that passed their 2024 MOT with a tyre advisory and came back for their next MOT 10–14 months later, 10.7% failed on tyres, against 6.4% of similar cars with nothing noted. Based on 3,266 and 10,856 cars.

  • With a tyre advisory10.7%
  • Similar cars, nothing noted6.4%

Cars not tested again in that window are not included: 11.8% of those with a tyre advisory and 10.7% of the others.

Brakes

Of 2014 Mercedes-Benz C-Class cars that passed their 2024 MOT with a brake advisory and came back for their next MOT 10–14 months later, 8.9% failed on brakes, against 4.9% of similar cars with nothing noted. Based on 2,446 and 11,564 cars.

  • With a brake advisory8.9%
  • Similar cars, nothing noted4.9%

Cars not tested again in that window are not included: 11.5% of those with a brake advisory and 10.9% of the others.

Suspension

Of 2014 Mercedes-Benz C-Class cars that passed their 2024 MOT with a suspension advisory and came back for their next MOT 10–14 months later, 15.1% failed on suspension, against 8.1% of similar cars with nothing noted. Based on 1,452 and 12,304 cars.

  • With a suspension advisory15.1%
  • Similar cars, nothing noted8.1%

Cars not tested again in that window are not included: 10.9% of those with a suspension advisory and 11.0% of the others.

Similar cars are the same model, first-use year and mileage band. Areas are the DVSA's top-level groups, so the later fail may not be the fault that was advised. These figures describe what happened to these cars. They don't show what a repair would have changed.

Mercedes-Benz C-Class, all first-use years togetherHow we worked this outAll models compared, with the data

What MOT data can't tell you about any 2014 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 2014

Check a 2014 C-Class you're looking at