Mercedes Gl
Reliability, running costs, and MOT data across 16 years from 7,366 real MOT tests.
Avg Pass Rate
89%
Total Tests
7,366
Best Year
2020 (100%)
Years Covered
16
How reliable is the Mercedes Gl?
Mercedes Gl by Year
| Year | Pass Rate | Tests | Avg Mileage |
|---|---|---|---|
| 2021 | 99% | 71 | 29,185 mi |
| 2020 | 100% | 69 | 41,984 mi |
| 2019 | 93% | 137 | 35,018 mi |
| 2018 | 95% | 63 | 38,524 mi |
| 2017 | 79% | 47 | 108,751 mi |
| 2016 | 88% | 475 | 73,156 mi |
| 2015 | 89% | 1,283 | 79,394 mi |
| 2014 | 92% | 1,321 | 93,766 mi |
| 2013 | 90% | 1,304 | 103,757 mi |
| 2012 | 89% | 225 | 99,410 mi |
| 2011 | 86% | 609 | 116,582 mi |
| 2010 | 89% | 435 | 121,550 mi |
| 2009 | 81% | 224 | 126,000 mi |
| 2008 | 84% | 371 | 122,229 mi |
| 2007 | 85% | 572 | 130,779 mi |
| 2006 | 78% | 160 | 123,042 mi |
Checking a specific Mercedes Gl?
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About the Mercedes Gl
The Mercedes Gl has been tested 7,366 times in 2024 MOT data across 16 model years (2006 to 2021), with an average pass rate of 89%. That's comfortably above the national average of 82%, making it a reliable choice. Available as diesel and petrol.
Best and Worst Years
The 2020 model is the most reliable with a 100% pass rate from 69 tests. The 2006 model has the lowest at 78%. With a 22 point spread, choosing the right year makes a big difference to reliability.
Reliability Trend
Newer MERCEDES GLs show better MOT pass rates than older ones, with an average improvement of 9 percentage points.
Mileage Across Years
The oldest model in our data (2006) averages 123,042 miles, while the newest (2021) averages 29,185 miles. Older models have covered serious mileage, so suspension and drivetrain wear are worth checking.
Click any year in the table above to see detailed running costs, individual reliability data, and comparisons with similar cars.