Mercedes C 300 AMG Line Ed Premium De A (2020)
Estimated running costs and MOT pass rates from 384 MOT tests in 2024.
Annual Cost
£2,002
£167/month
MOT Pass Rate
84%
Good
Road Tax
£200
Standard rate/year
Est. Insurance
Grp 18-32
1950cc Diesel hybrid
Solid Option
84% pass rate, £2,002/year to run. Close to the average across all models.
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Annual Running Costs
~48 mpg (diesel-engine estimate; hybrids usually use less)
Standard rate (from April 2017)
Estimates based on 7,400 miles/year (UK average), diesel at 199.33p a litre (GOV.UK weekly average, week of 19 October 2026), GOV.UK road tax rates and repair likelihood from MOT data. Insurance not included. Cars registered from April 2017 pay the £200 standard rate, plus £440 a year for five years (from the second year) if they cost over £40,000 new (over £50,000 for electric cars).
Reliability Verdict
Good reliability. Occasional issues but generally solid. That's close to the average of 82% across all models in our data.
84% of MOT tests on Mercedes C 300 AMG Line Ed Premium De As from 2020 ended in a pass in 2024, when they were about 4 years old. That's based on 384 tests across the UK, retests included. The average mileage recorded at those tests was 54,913 miles.
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How Does It Compare?
Mileage Analysis
54,913
Average miles
29,600
Expected for age
The average 2020 Mercedes C 300 AMG Line Ed Premium De A had 54,913 miles on the clock at its 2024 MOT, which is well above the expected 29,600 miles for a 4-year-old car. Check service history carefully, as high-mileage cars need consistent maintenance to stay reliable.
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Mercedes C 300 AMG Line Ed Premium De A by Year
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Check a Specific Mercedes C 300 AMG Line Ed Premium De A
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About the 2020 Mercedes C 300 AMG Line Ed Premium De A
The 2020 Mercedes C 300 AMG Line Ed Premium De A is a premium car. Our records list a 1950cc diesel hybrid engine, though engines vary between versions. 384 MOT tests were recorded on this model in 2024, making it a less common model in the UK market. It sits in the bottom 7% of 2020 models for MOT pass rate.
With an average of 54,913 miles recorded at its 2024 MOT tests, Mercedes C 300 AMG Line Ed Premium De A owners cover more miles than the average driver. High-mileage examples should be checked carefully for wear on suspension, brakes, and drivetrain components.
2020 Mercedes C 300 AMG Line Ed Premium De A Fuel Costs
The 1950cc diesel hybrid engine offers a reasonable balance between performance and economy. Our estimate uses around 48 mpg, the figure for a diesel engine of this size, which works out to roughly £1,397 per year with diesel at 199.33p per litre (GOV.UK weekly average, week of 19 October 2026; based on 7,400 miles per year). As a hybrid it should use less than that, and real-world fuel costs depend a lot on how much electric-only driving you do.
What does it cost to own a 2020 Mercedes C 300 AMG Line Ed Premium De A?
Total estimated annual running cost is £2,002 (£167/month), broken down as £1,397 fuel, £200 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 84% pass rate. Keeping on top of servicing will help avoid surprises.
Buying a Used 2020 Mercedes C 300 AMG Line Ed Premium De A
At 6 years old, the Mercedes C 300 AMG Line Ed Premium De 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
These are typical issues for cars of this age, fuel type and engine size, not faults recorded on this model's MOT tests. Use them as a checklist when you view one.
Hybrid Battery Health
Medium riskAfter 6 years, hybrid battery capacity may have reduced. A full replacement costs £2,000-£4,000, though reconditioning is cheaper at £500-£1,500.
Inverter and Power Electronics
Low riskThe inverter converts DC to AC for the electric motor. Failures are expensive (£1,500+) but relatively rare. Listen for unusual buzzing sounds.
Regenerative Braking
Medium riskBrake discs can corrode from reduced use (the electric motor handles most braking). Surface rust is normal but deep pitting needs attention.
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 C 300 AMG Line Ed Premium De A stacks up against similar cars for estimated annual running costs, insurance group, and tax.
| Car | Pass Rate | Fuel/yr | Tax/yr | Est. Ins. Group | Total/yr |
|---|---|---|---|---|---|
| Mercedes C 300 AMG Line Ed Premium De A(2020) | 84% | £1,397 | £200 | Grp 18-32 | £2,002 |
| Land Rover Discovery Sport R-DYN SE D A(2020) | 90% | £1,397 | £200 | Grp 18-32 | £1,852-£150 |
| BMW 520D M Sport MHEV Auto(2021) | 89% | £1,397 | £200 | Grp 18-32 | £2,002same |
| BMW 320D M Sport MHEV Auto(2021) | 91% | £1,397 | £200 | Grp 18-32 | £1,852-£150 |
| Volvo XC90 R-Design B5 MHEV Awd Auto(2021) | 90% | £1,397 | £200 | Grp 18-32 | £1,852-£150 |
Estimates based on 7,400 miles/year, GOV.UK average pump prices for the week of 19 October 2026, GOV.UK road tax rates and MOT data. Insurance groups are our rough estimate from engine size, not official groups. Actual costs vary by driver, location, and usage.
Questions about the 2020 Mercedes C 300 AMG Line Ed Premium De A
Is the 2020 Mercedes C 300 AMG Line Ed Premium De A reliable?
Good reliability. Occasional issues but generally solid. 84% of MOT tests on 2020 Mercedes C 300 AMG Line Ed Premium De As ended in a pass, from 384 tests (DVSA MOT data for tests in 2024, retests included). That's 2 points above the average of 82% across all models in the same data.
How much does a 2020 Mercedes C 300 AMG Line Ed Premium De A cost to run?
Our estimate is £2,002 a year (£167 a month): £1,397 fuel, £200 road tax, £55 MOT and £350 predicted repairs, based on 7,400 miles a year. Insurance is not included.
What is the MOT pass rate for a 2020 Mercedes C 300 AMG Line Ed Premium De A?
84% of 384 MOT tests on the 2020 Mercedes C 300 AMG Line Ed Premium De A ended in a pass (DVSA MOT data for tests in 2024, retests included). That ranks it 2381st of 2,554 models first registered in 2020 (bottom 7%).
What is the average mileage for a 2020 Mercedes C 300 AMG Line Ed Premium De A?
The average mileage recorded at MOT tests on the 2020 Mercedes C 300 AMG Line Ed Premium De A is 54,913 miles, which is well above the expected 29,600 miles for a 4-year-old car. Check service history carefully, as high-mileage cars need consistent maintenance to stay reliable.
Related Mercedes Models
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Check a specific Mercedes C 300 AMG Line Ed Premium De A
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Premium History Check
Buying a Mercedes C 300 AMG Line Ed Premium De A? Our premium check covers:
- Stolen check (PNC)
- Outstanding finance
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- Previous owners count
With outstanding finance included