MERCEDES AMG C 43 EDITION PREMIUM 4M A (2021)
Running costs, reliability data, and common problems from 101 real MOT tests.
Annual Cost
£2,042
£170/month
MOT Pass Rate
95%
Excellent
Road Tax
£195
Flat rate/year
Insurance
Grp 30-42
2996cc Petrol
Great Choice
95% pass rate, £2042/year to run. 13 points above average.
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Annual Running Costs
~30 mpg
Flat rate (post-2017)
Low estimate due to excellent reliability
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT data. Insurance not included.
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Reliability Verdict
Excellent reliability. Very few MOT failures. That's 13 points above the national average of 82%. It also outperforms the MERCEDES brand average of 87%.
At 5 years old, 95% of MERCEDES AMG C 43 EDITION PREMIUM 4M As from 2021 passed their MOT first time in 2026. That's based on 101 tests across the UK. The average mileage at this age is 21,125 miles.
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How Does It Compare?
Mileage Analysis
21,125
Average miles
37,000
Expected for age
The average 2021 MERCEDES AMG C 43 EDITION PREMIUM 4M A has 21,125 miles on the clock, which is below the expected 37,000 miles for a 5-year-old car. This suggests lighter use than average, which generally means less wear on major components.
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MERCEDES AMG C 43 EDITION PREMIUM 4M A by Year
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About the 2021 MERCEDES AMG C 43 EDITION PREMIUM 4M A
The 2021 MERCEDES AMG C 43 EDITION PREMIUM 4M A is a large car with a 2996cc petrol engine. 101 of these vehicles were MOT tested in 2026, making it a rare model on UK roads. Among all cars from 2021, the average MOT pass rate is 92%, and this model beats that benchmark.
With an average of 21,125 miles at 5 years old, MERCEDES AMG C 43 EDITION PREMIUM 4M A owners tend to use this car less than the typical driver.
2021 MERCEDES AMG C 43 EDITION PREMIUM 4M A Fuel Costs
The 2996cc petrol engine is on the larger side, so fuel won't be this car's strong point. Expect around 30 mpg in mixed driving, which works out to roughly £1,592 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).
What does it cost to own a 2021 MERCEDES AMG C 43 EDITION PREMIUM 4M A?
Total estimated annual running cost is £2,042 (£170/month), broken down as £1592 fuel, £195 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 95% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
Buying a Used 2021 MERCEDES AMG C 43 EDITION PREMIUM 4M A
At 5 years old, the MERCEDES AMG C 43 EDITION PREMIUM 4M A offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost.
Common Issues to Watch For
Based on the 2021 MERCEDES AMG C 43 EDITION PREMIUM 4M A's fuel type, age, and engine size, these are the most likely problem areas to check.
Oil Consumption
Low riskLarger petrol engines can develop higher oil consumption as they age. Check the oil level and look for blue smoke from the exhaust.
Service History
Low riskAlways request a full service history. Regular servicing is the single best indicator of how well a car has been maintained, regardless of mileage.
Running Costs Compared
How the 2021 MERCEDES AMG C 43 EDITION PREMIUM 4M A stacks up against similar cars for annual running costs, insurance, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Insurance | Total/yr |
|---|---|---|---|---|---|
| MERCEDES AMG C 43 EDITION PREMIUM 4M A(2021) | 95% | £1592 | £195 | Grp 30-42 | £2042 |
| BMW 5 SERIES(2019) | 92% | £1592 | £190 | Grp 30-42 | £2037-£5 |
| BMW X3(2019) | 92% | £1592 | £190 | Grp 30-42 | £2037-£5 |
| MERCEDES GLC(2019) | 93% | £1592 | £190 | Grp 30-42 | £2037-£5 |
| BMW X5(2019) | 92% | £1592 | £190 | Grp 30-42 | £2037-£5 |
Estimates based on 7,400 miles/year, current fuel prices, and MOT data. Insurance groups are indicative. Actual costs vary by driver, location, and usage.
Related Mercedes Models
Explore other Mercedes cars or similar models in the same category.
MERCEDES A
2019 · 1461cc Diesel
MERCEDES C
2017 · 1991cc Hybrid
MERCEDES A-CLASS
2017 · 1461cc Diesel
BMW 5 SERIES
2019 · 2998cc Petrol
BMW X3
2019 · 2998cc Petrol
MERCEDES GLC
2019 · 2996cc Petrol
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