MERCEDES AMG C 43 EDITION PREM + 4M A (2020)
Running costs, reliability data, and common problems from 206 real MOT tests.
Annual Cost
£2,042
£170/month
MOT Pass Rate
92%
Excellent
Road Tax
£195
Flat rate/year
Insurance
Grp 30-42
2996cc Petrol
Great Choice
92% pass rate, £2042/year to run. 10 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 10 points above the national average of 82%. It also outperforms the MERCEDES brand average of 87%.
At 6 years old, 92% of MERCEDES AMG C 43 EDITION PREM + 4M As from 2020 passed their MOT first time in 2026. That's based on 206 tests across the UK. The average mileage at this age is 31,201 miles.
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How Does It Compare?
Mileage Analysis
31,201
Average miles
44,400
Expected for age
The average 2020 MERCEDES AMG C 43 EDITION PREM + 4M A has 31,201 miles on the clock, which is below the expected 44,400 miles for a 6-year-old car. This suggests lighter use than average, which generally means less wear on major components.
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Best Year to Buy?
The most reliable year is the 2021 model with a 94% MOT pass rate, while the 2019 model has the lowest at 81%. The 2020 sits between the two at 92%.
MERCEDES AMG C 43 EDITION PREM + 4M A by Year
Similar Cars to Consider
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About the 2020 MERCEDES AMG C 43 EDITION PREM + 4M A
The 2020 MERCEDES AMG C 43 EDITION PREM + 4M A is a large car with a 2996cc petrol engine. 206 of these vehicles were MOT tested in 2026, making it a less common model in the UK market. Among all cars from 2020, the average MOT pass rate is 92%, and this model falls short of that benchmark.
With an average of 31,201 miles at 6 years old, MERCEDES AMG C 43 EDITION PREM + 4M A owners tend to use this car less than the typical driver.
2020 MERCEDES AMG C 43 EDITION PREM + 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 2020 MERCEDES AMG C 43 EDITION PREM + 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 92% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
MERCEDES AMG C 43 EDITION PREM + 4M A Reliability Trend
Newer MERCEDES AMG C 43 EDITION PREM + 4M As show better MOT pass rates than older ones, with an average improvement of 12 percentage points.
Buying a Used 2020 MERCEDES AMG C 43 EDITION PREM + 4M A
At 6 years old, the MERCEDES AMG C 43 EDITION PREM + 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. If you're flexible on year, the 2021 model has the highest pass rate at 94%.
Common Issues to Watch For
Based on the 2020 MERCEDES AMG C 43 EDITION PREM + 4M A's fuel type, age, and engine size, these are the most likely problem areas to check.
Timing Chain / Belt
Watch outAt 6 years old, check whether the timing belt has been replaced (typically due every 5-7 years or 60,000-100,000 miles). A snapped belt can destroy the engine.
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 2020 MERCEDES AMG C 43 EDITION PREM + 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 PREM + 4M A(2020) | 92% | £1592 | £195 | Grp 30-42 | £2042 |
| BMW 5 SERIES(2018) | 91% | £1592 | £190 | Grp 30-42 | £2037-£5 |
| LAND ROVER RANGE ROVER SPORT(2018) | 93% | £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 |
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
2018 · 2998cc Petrol
LAND ROVER RANGE ROVER SPORT
2018 · 2995cc Petrol
BMW X3
2019 · 2998cc Petrol
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