Mercedes Gls 400 amg line prem d 4mat a
Reliability, running costs, and MOT data across 3 years from 538 real MOT tests.
Avg Pass Rate
93%
Total Tests
538
Best Year
2019 (97%)
Years Covered
3
About the Mercedes Gls 400 amg line prem d 4mat a
The Mercedes Gls 400 amg line prem d 4mat a has been tested 538 times in 2026 MOT data across 3 model years (2019 to 2021), with an average pass rate of 93%. That's comfortably above the national average of 82%, making it a reliable choice. Available as diesel.
Best and Worst Years
The 2019 model is the most reliable with a 97% pass rate from 33 tests. The 2021 model has the lowest at 90%. The 7 point spread between years means reliability varies somewhat, but no year is dramatically different.
Mileage Across Years
The oldest model in our data (2019) averages 37,907 miles, while the newest (2021) averages 34,633 miles.
Compared to the Mercedes brand average of 87%, the Gls 400 amg line prem d 4mat a performs 6 points better, making it one of the more reliable options in the Mercedes range.
Estimated Running Costs
Based on 7,400 miles/year, current fuel prices, and MOT pass rate data. Insurance not included.
Full 2021 detailsHow reliable is the Mercedes Gls 400 amg line prem d 4mat a?
Mercedes Gls 400 amg line prem d 4mat a by Year
Click any year to see detailed running costs, reliability data, and comparisons with similar cars.
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