Mercedes C 320

Reliability, estimated running costs, and MOT data across 11 model years from 2,602 MOT tests in 2024.

Avg Pass Rate

78%

Total Tests

2,602

Highest Pass Rate

2007 (82%)

Years Covered

About the Mercedes C 320

The Mercedes C 320 was MOT tested 2,602 times in 2024 (DVSA data, retests included) across 11 model years (2000 to 2010), with an average pass rate of 78%. That's close to the average of 82% across all models in our data. Our records list diesel and petrol versions.

Best and Worst Years

Of the years with at least 100 tests, the 2007 model has the highest pass rate at 82% from 301 tests. The 2002 model has the lowest at 72%. The 10 point gap means pass rates vary somewhat between years, but no year is dramatically different. Newer cars usually pass more often simply because they are younger.

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.

Estimated Running Costs

Fuel (Diesel, 2987cc)

£1,676

Road Tax

£410

MOT Test

£55

Predicted Repairs

£350

Total per year£2,491

Per month£208/mo

Based on 7,400 miles/year, average pump prices of 174.57p petrol and 199.33p diesel (GOV.UK weekly road fuel prices, week of 19 October 2026), and MOT pass rate data. Insurance not included.

Full 2010 details

How reliable is the Mercedes C 320?

vs average of all models-4% (82% avg)

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

Best to worst year spread10 percentage points

Reliability trendStable over years

Mercedes C 320 by Year

Click any year to see detailed running costs, reliability data, and comparisons with similar cars.

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

Questions about the Mercedes C 320

Is the Mercedes C 320 reliable?

Across its 11 model years in our data (2000 to 2010), the Mercedes C 320 averages a 78% MOT pass rate, from 2,602 tests (DVSA MOT data for tests in 2024, retests included). That's 4 points below the average of 82% across all models in the same data. The 2007 model has the highest pass rate of the years with at least 100 tests, at 82%.

Which year Mercedes C 320 has the best MOT pass rate?

Of the years with at least 100 tests, the 2007 Mercedes C 320 has the highest MOT pass rate at 82%, while the 2002 model has the lowest at 72%, a 10 point gap. Newer cars usually pass more often simply because they are younger, so compare years of a similar age.