MERCEDES GL (2014)
Running costs, common problems, and reliability data based on 1,321 real MOT tests in 2024.
MOT Pass Rate
92%
Total Tests (2024)
1,321
Avg Mileage
93,766 mi
Est. Annual Cost
£1,750
Is the 2014 MERCEDES GL 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 10 years old, 92% of MERCEDES GLs from 2014 passed their MOT first time in 2024. That's based on 1,321 tests across the UK. The average mileage at this age is 93,766 miles.
How does the 2014 MERCEDES GL compare?
Mileage Analysis
The average 2014 MERCEDES GL has 93,766 miles on the clock, which is above the expected 74,000 miles for a 10-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 GL?
The most reliable year is the 2020 model with a 100% MOT pass rate, while the 2006 model has the lowest at 78%. The 2014 sits between the two at 92%.
How much does a 2014 MERCEDES GL 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 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?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2014 MERCEDES GL
The 2014 MERCEDES GL is a large car with a 2987cc diesel engine. 1,321 of these vehicles were MOT tested in 2024, making it a reasonably common sight on UK roads. It ranks in the top 19% of all 2014 cars for reliability.
With an average of 93,766 miles at 10 years old, MERCEDES GL owners cover more miles than the average driver.
2014 MERCEDES GL Fuel Costs
The 2987cc 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). Diesel cars of this age should have their DPF (diesel particulate filter) checked, as replacements can be costly.
What does it cost to own a 2014 MERCEDES GL?
Total estimated annual running cost is £1,750 (£146/month), broken down as £1245 fuel, £250 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 GL Reliability Trend
Newer MERCEDES GLs show better MOT pass rates than older ones, with an average improvement of 9 percentage points.
Buying a Used 2014 MERCEDES GL
At 10 years old, the MERCEDES GL is firmly in budget territory. Purchase prices are low, but check for rust, worn suspension bushes, and electrical gremlins. A full service history is especially valuable at this age. If you're flexible on year, the 2020 model has the highest pass rate at 100%.
Alternatives to the 2014 MERCEDES GL
The MERCEDES GL is actually the most reliable option among similar diesel large cars from this era. Here are comparable diesel cars with similar engines:
- LAND ROVER RANGE ROVER (2013) 88% pass rate (-4%) from 27,426 tests
- JAGUAR XF (2014) 84% pass rate (-8%) from 26,866 tests
- FORD RANGER (2016) 84% pass rate (-8%) from 23,861 tests
- AUDI Q5 (2016) 90% pass rate (-2%) from 23,838 tests