MERCEDES C 320 (2010)
Running costs, common problems, and reliability data based on 35 real MOT tests in 2024.
MOT Pass Rate
80%
Total Tests (2024)
35
Avg Mileage
137,998 mi
Est. Annual Cost
£1,900
Is the 2010 MERCEDES C 320 reliable?
Good reliability. Occasional issues but generally solid. That's close to the national average of 82%. It falls below the MERCEDES brand average of 87%.
At 14 years old, 80% of MERCEDES C 320s from 2010 passed their MOT first time in 2024. That's based on 35 tests across the UK. The average mileage at this age is 137,998 miles.
How does the 2010 MERCEDES C 320 compare?
Mileage Analysis
The average 2010 MERCEDES C 320 has 137,998 miles on the clock, which is above the expected 103,600 miles for a 14-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.
Best year to buy a MERCEDES C 320?
The most reliable year is the 2007 model with a 82% MOT pass rate, while the 2002 model has the lowest at 72%. The 2010 sits between the two at 80%.
How much does a 2010 MERCEDES C 320 cost to run?
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.
MERCEDES C 320 by Year
Checking a specific MERCEDES C 320?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2010 MERCEDES C 320
The 2010 MERCEDES C 320 is a large car with a 2987cc diesel engine. 35 of these vehicles were MOT tested in 2024, making it a rare model on UK roads. Among all cars from 2010, the average MOT pass rate is 75%, and this model beats that benchmark.
With an average of 137,998 miles at 14 years old, MERCEDES C 320 owners cover more miles than the average driver.
2010 MERCEDES C 320 Fuel Costs
The 2987cc diesel engine is on the larger side, so fuel won't be this car's strong point. Expect around 40 mpg in mixed driving, which works out to roughly £1,245 per year at current diesel prices of 148p per litre (based on 7,400 miles per year). Diesel cars of this age should have their DPF (diesel particulate filter) checked, as replacements can be costly.
What does it cost to own a 2010 MERCEDES C 320?
Total estimated annual running cost is £1,900 (£158/month), broken down as £1245 fuel, £250 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 80% pass rate. Keeping on top of servicing will help avoid surprises.
MERCEDES C 320 Reliability Trend
The MERCEDES C 320 has maintained consistent MOT pass rates across model years, varying by only 3 percentage points.
Buying a Used 2010 MERCEDES C 320
At 14 years old, the MERCEDES C 320 is firmly in budget territory. Purchase prices are low, but check for rust, worn suspension bushes, and electrical gremlins. A full service history is especially valuable at this age. If you're flexible on year, the 2007 model has the highest pass rate at 82%. Note: with only 35 tests in our data, these figures should be treated as indicative rather than definitive.
Alternatives to the 2010 MERCEDES C 320
If reliability is your priority, there are 3 similar cars with a higher MOT pass rate. Here are comparable diesel cars with similar engines:
- BMW 3 SERIES (2008) 80% pass rate (same) from 48,705 tests
- AUDI A4 (2011) 82% pass rate (+2%) from 26,901 tests
- AUDI A5 (2010) 82% pass rate (+2%) from 22,181 tests
- JAGUAR XF (2012) 82% pass rate (+2%) from 22,165 tests