Mercedes G 400 AMG Line Prem + D 4M A
Reliability, estimated running costs, and MOT data across 1 model year from 292 MOT tests in 2024.
Avg Pass Rate
95%
Total Tests
292
Model Year
2021
Years Covered
1
About the Mercedes G 400 AMG Line Prem + D 4M A
The Mercedes G 400 AMG Line Prem + D 4M A was MOT tested 292 times in 2024 (DVSA data, retests included) across 1 model year (2021), with an average pass rate of 95%. That's comfortably above the average of 82% across all models in our data. Our records list diesel versions.
Compared to the Mercedes brand average of 87%, the G 400 AMG Line Prem + D 4M A performs 8 points better, making it one of the more reliable options in the Mercedes range.
Estimated Running Costs
Based on 7,400 miles/year, average pump prices of 174.57p petrol and 199.33p diesel (GOV.UK weekly road fuel prices, week of 19 October 2026), and MOT pass rate data. Insurance not included.
Full 2021 detailsHow reliable is the Mercedes G 400 AMG Line Prem + D 4M A?
Mercedes G 400 AMG Line Prem + D 4M A by Year
Click any year to see detailed running costs, reliability data, and comparisons with similar cars.
| Year | Pass Rate | Tests | Avg Mileage | |
|---|---|---|---|---|
| 2021 | 95% | 292 | 31,598 mi |
Questions about the Mercedes G 400 AMG Line Prem + D 4M A
Is the Mercedes G 400 AMG Line Prem + D 4M A reliable?
Across its 1 model year in our data (2021), the Mercedes G 400 AMG Line Prem + D 4M A averages a 95% MOT pass rate, from 292 tests (DVSA MOT data for tests in 2024, retests included). That's 13 points above the average of 82% across all models in the same data.
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