MERCEDES C 300 AMG LINE ED PREM MHEV A (2021)
Running costs, common problems, and reliability data based on 154 real MOT tests in 2024.
MOT Pass Rate
96%
Total Tests (2024)
154
Avg Mileage
20,133 mi
Est. Annual Cost
£1,772
Is the 2021 MERCEDES C 300 AMG LINE ED PREM MHEV A reliable?
Excellent reliability. Very few MOT failures. That's 14 points above the national average of 82%. It also outperforms the MERCEDES brand average of 87%.
At 3 years old, 96% of MERCEDES C 300 AMG LINE ED PREM MHEV As from 2021 passed their MOT first time in 2024. That's based on 154 tests across the UK. The average mileage at this age is 20,133 miles.
How does the 2021 MERCEDES C 300 AMG LINE ED PREM MHEV A compare?
Mileage Analysis
The average 2021 MERCEDES C 300 AMG LINE ED PREM MHEV A has 20,133 miles on the clock, which is in line with the expected 22,200 miles for a 3-year-old car, suggesting normal everyday use.
How much does a 2021 MERCEDES C 300 AMG LINE ED PREM MHEV 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 PREM MHEV A by Year
Checking a specific MERCEDES C 300 AMG LINE ED PREM MHEV A?
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About the 2021 MERCEDES C 300 AMG LINE ED PREM MHEV A
The 2021 MERCEDES C 300 AMG LINE ED PREM MHEV A is a family car with a 1991cc hybrid engine. 154 of these vehicles were MOT tested in 2024, making it a rare model on UK roads. It ranks in the top 19% of all 2021 cars for reliability.
With an average of 20,133 miles at 3 years old, MERCEDES C 300 AMG LINE ED PREM MHEV A owners drive about as much as the UK average.
2021 MERCEDES C 300 AMG LINE ED PREM MHEV 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 PREM MHEV A?
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 96% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
Buying a Used 2021 MERCEDES C 300 AMG LINE ED PREM MHEV 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.
Alternatives to the 2021 MERCEDES C 300 AMG LINE ED PREM MHEV A
The MERCEDES C 300 AMG LINE ED PREM MHEV A is actually the most reliable option among similar hybrid family cars from this era. Here are comparable hybrid cars with similar engines:
- TOYOTA YARIS (2019) 93% pass rate (-3%) from 41,554 tests
- MINI COOPER S (2019) 92% pass rate (-4%) from 33,682 tests
- LAND ROVER RANGE ROVER SPORT (2019) 94% pass rate (-2%) from 33,069 tests
- TOYOTA C-HR (2019) 92% pass rate (-4%) from 29,893 tests