MERCEDES C 300 AMG LINE EDITION D AUTO (2020)
Running costs, common problems, and reliability data based on 105 real MOT tests in 2024.
MOT Pass Rate
93%
Total Tests (2024)
105
Avg Mileage
43,141 mi
Est. Annual Cost
£1,482
Is the 2020 MERCEDES C 300 AMG LINE EDITION D 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 AMG LINE EDITION D AUTOs from 2020 passed their MOT first time in 2024. That's based on 105 tests across the UK. The average mileage at this age is 43,141 miles.
How does the 2020 MERCEDES C 300 AMG LINE EDITION D AUTO compare?
Mileage Analysis
The average 2020 MERCEDES C 300 AMG LINE EDITION D AUTO has 43,141 miles on the clock, which is above the expected 29,600 miles for a 4-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.
How much does a 2020 MERCEDES C 300 AMG LINE EDITION D 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 AMG LINE EDITION D AUTO by Year
Checking a specific MERCEDES C 300 AMG LINE EDITION D AUTO?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2020 MERCEDES C 300 AMG LINE EDITION D AUTO
The 2020 MERCEDES C 300 AMG LINE EDITION D AUTO is a family car with a 1950cc diesel engine. 105 of these vehicles were MOT tested in 2024, making it a rare model on UK roads. Among all cars from 2020, the average MOT pass rate is 92%, and this model beats that benchmark.
With an average of 43,141 miles at 4 years old, MERCEDES C 300 AMG LINE EDITION D AUTO owners cover more miles than the average driver.
2020 MERCEDES C 300 AMG LINE EDITION D AUTO Fuel Costs
The 1950cc diesel engine offers a reasonable balance between performance and economy. Expect around 48 mpg in mixed driving, which works out to roughly £1,037 per year at current diesel prices of 148p per litre (based on 7,400 miles per year).
What does it cost to own a 2020 MERCEDES C 300 AMG LINE EDITION D AUTO?
Total estimated annual running cost is £1,482 (£124/month), broken down as £1037 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 AMG LINE EDITION D AUTO
At 4 years old, the MERCEDES C 300 AMG LINE EDITION D 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 AMG LINE EDITION D AUTO
The MERCEDES C 300 AMG LINE EDITION D AUTO is actually the most reliable option among similar diesel family cars from this era. Here are comparable diesel cars with similar engines:
- VOLKSWAGEN GOLF (2018) 92% pass rate (-1%) from 111,972 tests
- FORD FOCUS (2019) 89% pass rate (-4%) from 93,803 tests
- MERCEDES A (2019) 91% pass rate (-2%) from 89,588 tests
- MERCEDES A-CLASS (2018) 89% pass rate (-4%) from 81,134 tests