MERCEDES C 300 SPORT EDITION DE AUTO (2020)
Running costs, common problems, and reliability data based on 227 real MOT tests in 2024.
MOT Pass Rate
93%
Total Tests (2024)
227
Avg Mileage
58,078 mi
Est. Annual Cost
£1,772
Is the 2020 MERCEDES C 300 SPORT EDITION DE AUTO reliable?
Excellent reliability. Very few MOT failures. That's 11 points above the national average of 82%. It also outperforms the MERCEDES brand average of 87%.
At 4 years old, 93% of MERCEDES C 300 SPORT EDITION DE AUTOs from 2020 passed their MOT first time in 2024. That's based on 227 tests across the UK. The average mileage at this age is 58,078 miles.
How does the 2020 MERCEDES C 300 SPORT EDITION DE AUTO compare?
Mileage Analysis
The average 2020 MERCEDES C 300 SPORT EDITION DE AUTO has 58,078 miles on the clock, which is well above the expected 29,600 miles for a 4-year-old car. Check service history carefully, as high-mileage cars need consistent maintenance to stay reliable.
How much does a 2020 MERCEDES C 300 SPORT EDITION DE AUTO 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 300 SPORT EDITION DE AUTO by Year
Checking a specific MERCEDES C 300 SPORT EDITION DE AUTO?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2020 MERCEDES C 300 SPORT EDITION DE AUTO
The 2020 MERCEDES C 300 SPORT EDITION DE AUTO is a family car with a 1950cc petrol engine. 227 of these vehicles were MOT tested in 2024, making it a less common model in the UK market. Among all cars from 2020, the average MOT pass rate is 92%, and this model beats that benchmark.
With an average of 58,078 miles at 4 years old, MERCEDES C 300 SPORT EDITION DE AUTO owners cover more miles than the average driver. High-mileage examples should be checked carefully for wear on suspension, brakes, and drivetrain components.
2020 MERCEDES C 300 SPORT EDITION DE AUTO Fuel Costs
The 1950cc petrol engine offers a reasonable balance between performance and economy. Expect around 36 mpg in mixed driving, which works out to roughly £1,327 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).
What does it cost to own a 2020 MERCEDES C 300 SPORT EDITION DE AUTO?
Total estimated annual running cost is £1,772 (£148/month), broken down as £1327 fuel, £190 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 93% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
Buying a Used 2020 MERCEDES C 300 SPORT EDITION DE AUTO
At 4 years old, the MERCEDES C 300 SPORT EDITION DE AUTO offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost.
Alternatives to the 2020 MERCEDES C 300 SPORT EDITION DE AUTO
The MERCEDES C 300 SPORT EDITION DE AUTO is actually the most reliable option among similar petrol family cars from this era. Here are comparable petrol cars with similar engines:
- LAND ROVER DISCOVERY SPORT R-DYN SE D A (2020) 90% pass rate (-3%) from 5,505 tests
- BMW 520D M SPORT MHEV AUTO (2021) 89% pass rate (-4%) from 3,423 tests
- BMW 320D M SPORT MHEV AUTO (2021) 91% pass rate (-2%) from 3,336 tests
- VOLVO XC90 R-DESIGN B5 MHEV AWD AUTO (2021) 90% pass rate (-3%) from 2,911 tests