Is the Mercedes C 320 reliable?

The Mercedes C 320 has an average MOT pass rate of 78% across 11 years, based on 2,602 tests in 2024. That's 4 points below the national average of 82%. The most reliable year is 2000 with a 89% pass rate.

Which year Mercedes C 320 is best?

The 2000 Mercedes C 320 has the highest MOT pass rate at 89%, while the 2004 model has the lowest at 72%. There's a 17 percentage point spread between the best and worst years.

Mercedes C 320 Running Costs, MOT Pass Rates & Reliability

Mercedes C 320

Reliability, running costs, and MOT data across 11 years from 2,602 real MOT tests.

Avg Pass Rate

78%

Total Tests

2,602

Best Year

2000 (89%)

Years Covered

How reliable is the Mercedes C 320?

vs national average-4% (82% avg)

vs Mercedes brand average-9% (87% avg)

Best to worst year spread17 percentage points

Reliability trendStable over years

Mercedes C 320 by Year

Year	Pass Rate	Tests	Avg Mileage
2010	80%	35	137,998 mi
2009	76%	311	121,062 mi
2008	77%	699	126,482 mi
2007	82%	301	116,931 mi
2006	78%	269	123,701 mi
2005	77%	175	122,264 mi
2004	72%	199	104,785 mi
2003	78%	197	109,037 mi
2002	72%	178	107,506 mi
2001	79%	200	104,888 mi
2000	89%	38	103,507 mi

Checking a specific Mercedes C 320?

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About the Mercedes C 320

The Mercedes C 320 has been tested 2,602 times in 2024 MOT data across 11 model years (2000 to 2010), with an average pass rate of 78%. That's close to the national average of 82%. Available as diesel and petrol.

Best and Worst Years

The 2000 model is the most reliable with a 89% pass rate from 38 tests. The 2004 model has the lowest at 72%. With a 17 point spread, choosing the right year makes a big difference to reliability.

Reliability Trend

The MERCEDES C 320 has maintained consistent MOT pass rates across model years, varying by only 3 percentage points.

Mileage Across Years

The oldest model in our data (2000) averages 103,507 miles, while the newest (2010) averages 137,998 miles. Older models have covered serious mileage, so suspension and drivetrain wear are worth checking.

Compared to the Mercedes brand average of 87%, the C 320 is 9 points lower, placing it among the less reliable Mercedes models.

Click any year in the table above to see detailed running costs, individual reliability data, and comparisons with similar cars.