MERCEDES GLC 400 AMG LINE PREM + D 4M A (2020)
Running costs, common problems, and reliability data based on 76 real MOT tests in 2024.
MOT Pass Rate
87%
Total Tests (2024)
76
Avg Mileage
33,473 mi
Est. Annual Cost
£1,840
Is the 2020 MERCEDES GLC 400 AMG LINE PREM + D 4M A reliable?
Good reliability. Occasional issues but generally solid. That's close to the national average of 82%.
At 4 years old, 87% of MERCEDES GLC 400 AMG LINE PREM + D 4M As from 2020 passed their MOT first time in 2024. That's based on 76 tests across the UK. The average mileage at this age is 33,473 miles.
How does the 2020 MERCEDES GLC 400 AMG LINE PREM + D 4M A compare?
Mileage Analysis
The average 2020 MERCEDES GLC 400 AMG LINE PREM + D 4M A has 33,473 miles on the clock, which is in line with the expected 29,600 miles for a 4-year-old car, suggesting normal everyday use.
How much does a 2020 MERCEDES GLC 400 AMG LINE PREM + D 4M 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.
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About the 2020 MERCEDES GLC 400 AMG LINE PREM + D 4M A
The 2020 MERCEDES GLC 400 AMG LINE PREM + D 4M A is a large car with a 2925cc diesel engine. 76 of these vehicles were MOT tested in 2024, making it a rare model on UK roads. It sits in the bottom 87% of 2020 cars for MOT pass rates.
With an average of 33,473 miles at 4 years old, MERCEDES GLC 400 AMG LINE PREM + D 4M A owners drive about as much as the UK average.
2020 MERCEDES GLC 400 AMG LINE PREM + D 4M A Fuel Costs
The 2925cc diesel engine is on the larger side, so fuel won't be this car's strong point. Expect around 40 mpg in mixed driving, which works out to roughly £1,245 per year at current diesel prices of 148p per litre (based on 7,400 miles per year).
What does it cost to own a 2020 MERCEDES GLC 400 AMG LINE PREM + D 4M A?
Total estimated annual running cost is £1,840 (£153/month), broken down as £1245 fuel, £190 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 87% pass rate. Keeping on top of servicing will help avoid surprises.
Buying a Used 2020 MERCEDES GLC 400 AMG LINE PREM + D 4M A
At 4 years old, the MERCEDES GLC 400 AMG LINE PREM + D 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. Note: with only 76 tests in our data, these figures should be treated as indicative rather than definitive.
Alternatives to the 2020 MERCEDES GLC 400 AMG LINE PREM + D 4M A
If reliability is your priority, there are 3 similar cars with a higher MOT pass rate. Here are comparable diesel cars with similar engines:
- MERCEDES E (2019) 90% pass rate (+3%) from 41,000 tests
- MERCEDES GLC (2018) 91% pass rate (+4%) from 40,494 tests
- FORD RANGER (2019) 87% pass rate (same) from 32,194 tests
- LAND ROVER RANGE ROVER VELAR (2018) 91% pass rate (+4%) from 29,640 tests