MERCEDES EQC 400 AMG LINE 4MATIC (2021)
Running costs, common problems, and reliability data based on 3,189 real MOT tests in 2024.
MOT Pass Rate
92%
Total Tests (2024)
3,189
Avg Mileage
31,765 mi
Est. Annual Cost
£945
Is the 2021 MERCEDES EQC 400 AMG LINE 4MATIC reliable?
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 3 years old, 92% of MERCEDES EQC 400 AMG LINE 4MATICs from 2021 passed their MOT first time in 2024. That's based on 3,189 tests across the UK. The average mileage at this age is 31,765 miles.
How does the 2021 MERCEDES EQC 400 AMG LINE 4MATIC compare?
Mileage Analysis
The average 2021 MERCEDES EQC 400 AMG LINE 4MATIC has 31,765 miles on the clock, which is above the expected 22,200 miles for a 3-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.
Best year to buy a MERCEDES EQC 400 AMG LINE 4MATIC?
The most reliable year is the 2020 model with a 93% MOT pass rate, while the 2019 model has the lowest at 91%. The 2021 sits between the two at 92%.
How much does a 2021 MERCEDES EQC 400 AMG LINE 4MATIC 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 EQC 400 AMG LINE 4MATIC by Year
Checking a specific MERCEDES EQC 400 AMG LINE 4MATIC?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2021 MERCEDES EQC 400 AMG LINE 4MATIC
The 2021 MERCEDES EQC 400 AMG LINE 4MATIC is a electric with a 0cc electric engine. 3,189 of these vehicles were MOT tested in 2024, making it a reasonably common sight on UK roads. Among all cars from 2021, the average MOT pass rate is 92%, and this model falls short of that benchmark.
With an average of 31,765 miles at 3 years old, MERCEDES EQC 400 AMG LINE 4MATIC owners cover more miles than the average driver.
What does it cost to own a 2021 MERCEDES EQC 400 AMG LINE 4MATIC?
Total estimated annual running cost is £945 (£79/month), broken down as £500 fuel, £190 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 EQC 400 AMG LINE 4MATIC Reliability Trend
The MERCEDES EQC 400 AMG LINE 4MATIC has maintained consistent MOT pass rates across model years, varying by only 1 percentage points.
Buying a Used 2021 MERCEDES EQC 400 AMG LINE 4MATIC
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. If you're flexible on year, the 2020 model has the highest pass rate at 93%.
Alternatives to the 2021 MERCEDES EQC 400 AMG LINE 4MATIC
If reliability is your priority, there's one similar car with a higher MOT pass rate. Here are comparable electric cars with similar engines:
- TESLA MODEL 3 LONG RANGE AWD (2021) 88% pass rate (-4%) from 39,444 tests
- JAGUAR I-PACE (2020) 96% pass rate (+4%) from 18,488 tests
- TESLA MODEL 3 STANDARD RANGE + (2021) 88% pass rate (-4%) from 15,258 tests
- TESLA MODEL 3 PERFORMANCE AWD (2020) 87% pass rate (-5%) from 12,320 tests