MERCEDES C 300 AMG LINE ED PREMIUM E A (2021)
Running costs, common problems, and reliability data based on 82 real MOT tests in 2024.
MOT Pass Rate
83%
Total Tests (2024)
82
Avg Mileage
39,238 mi
Est. Annual Cost
£1,922
Is the 2021 MERCEDES C 300 AMG LINE ED PREMIUM E A 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 3 years old, 83% of MERCEDES C 300 AMG LINE ED PREMIUM E As from 2021 passed their MOT first time in 2024. That's based on 82 tests across the UK. The average mileage at this age is 39,238 miles.
How does the 2021 MERCEDES C 300 AMG LINE ED PREMIUM E A compare?
Mileage Analysis
The average 2021 MERCEDES C 300 AMG LINE ED PREMIUM E A has 39,238 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.
Best year to buy a MERCEDES C 300 AMG LINE ED PREMIUM E A?
The most reliable year is the 2020 model with a 97% MOT pass rate, while the 2021 model has the lowest at 83%. Consider a different year if reliability is a priority.
How much does a 2021 MERCEDES C 300 AMG LINE ED PREMIUM E A 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 ED PREMIUM E A by Year
Checking a specific MERCEDES C 300 AMG LINE ED PREMIUM E A?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2021 MERCEDES C 300 AMG LINE ED PREMIUM E A
The 2021 MERCEDES C 300 AMG LINE ED PREMIUM E A is a family car with a 1991cc hybrid engine. 82 of these vehicles were MOT tested in 2024, making it a rare model on UK roads. It sits in the bottom 95% of 2021 cars for MOT pass rates.
With an average of 39,238 miles at 3 years old, MERCEDES C 300 AMG LINE ED PREMIUM E A 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 ED PREMIUM E A 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 ED PREMIUM E A?
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 83% pass rate. Keeping on top of servicing will help avoid surprises.
Buying a Used 2021 MERCEDES C 300 AMG LINE ED PREMIUM E A
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. Note: with only 82 tests in our data, these figures should be treated as indicative rather than definitive.
Alternatives to the 2021 MERCEDES C 300 AMG LINE ED PREMIUM E A
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 (+10%) from 41,554 tests
- MINI COOPER S (2019) 92% pass rate (+9%) from 33,682 tests
- LAND ROVER RANGE ROVER SPORT (2019) 94% pass rate (+11%) from 33,069 tests
- TOYOTA C-HR (2019) 92% pass rate (+9%) from 29,893 tests