MERCEDES C 300 AMG LINE EDITION E AUTO (2021)
Running costs, common problems, and reliability data based on 132 real MOT tests in 2024.
MOT Pass Rate
89%
Total Tests (2024)
132
Avg Mileage
39,108 mi
Est. Annual Cost
£1,922
Is the 2021 MERCEDES C 300 AMG LINE EDITION E AUTO reliable?
Good reliability. Occasional issues but generally solid. That's 7 points above the national average of 82%.
At 3 years old, 89% of MERCEDES C 300 AMG LINE EDITION E AUTOs from 2021 passed their MOT first time in 2024. That's based on 132 tests across the UK. The average mileage at this age is 39,108 miles.
How does the 2021 MERCEDES C 300 AMG LINE EDITION E AUTO compare?
Mileage Analysis
The average 2021 MERCEDES C 300 AMG LINE EDITION E AUTO has 39,108 miles on the clock, which is well above the expected 22,200 miles for a 3-year-old car. Check service history carefully, as high-mileage cars need consistent maintenance to stay reliable.
How much does a 2021 MERCEDES C 300 AMG LINE EDITION E 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 E AUTO by Year
Checking a specific MERCEDES C 300 AMG LINE EDITION E AUTO?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2021 MERCEDES C 300 AMG LINE EDITION E AUTO
The 2021 MERCEDES C 300 AMG LINE EDITION E AUTO is a family car with a 1991cc hybrid engine. 132 of these vehicles were MOT tested in 2024, making it a rare model on UK roads. It sits in the bottom 81% of 2021 cars for MOT pass rates.
With an average of 39,108 miles at 3 years old, MERCEDES C 300 AMG LINE EDITION E AUTO owners cover more miles than the average driver. High-mileage examples should be checked carefully for wear on suspension, brakes, and drivetrain components.
2021 MERCEDES C 300 AMG LINE EDITION E AUTO Fuel Costs
The 1991cc hybrid 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 hybrid prices of 142p per litre (based on 7,400 miles per year). As a hybrid, real-world fuel costs will vary significantly depending on how much electric-only driving you do.
What does it cost to own a 2021 MERCEDES C 300 AMG LINE EDITION E AUTO?
Total estimated annual running cost is £1,922 (£160/month), broken down as £1327 fuel, £190 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 89% pass rate. Keeping on top of servicing will help avoid surprises.
Buying a Used 2021 MERCEDES C 300 AMG LINE EDITION E AUTO
At 3 years old, this is still relatively fresh. You may find examples with remaining manufacturer warranty. Depreciation is slowing but hasn't bottomed out yet.
Alternatives to the 2021 MERCEDES C 300 AMG LINE EDITION E AUTO
If reliability is your priority, there are 4 similar cars with a higher MOT pass rate. Here are comparable hybrid cars with similar engines:
- TOYOTA YARIS (2019) 93% pass rate (+4%) from 41,554 tests
- MINI COOPER S (2019) 92% pass rate (+3%) from 33,682 tests
- LAND ROVER RANGE ROVER SPORT (2019) 94% pass rate (+5%) from 33,069 tests
- TOYOTA C-HR (2019) 92% pass rate (+3%) from 29,893 tests