Mercedes-benz Gls Reliability, MOT Pass Rate & Common Faults
Free Mercedes-benz Gls car check
Is the Mercedes-benz Gls reliable? We analysed 14,258 real MOT tests across 2,408 vehicles to find out.
Got a specific Mercedes-benz Gls? Enter the reg for a free check:
The Mercedes-benz Gls is above average for reliability based on real UK MOT data. Here's everything you need to know before buying a used Mercedes-benz Gls.
Mercedes-benz Gls Number Plates
Number plates registered to a Mercedes-benz Gls. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Mercedes-benz Gls MOT Pass Rate by Year
How likely is a Mercedes-benz Gls to pass its MOT? Here's the pass rate for each registration year, newest first.
Mercedes-benz Gls Common Faults & Problems
These are the most common serious faults found on Mercedes-benz Gls models during MOT testing — flagged as dangerous or major failures that need immediate attention.
Mercedes-benz Gls Mileage — What's Normal?
How many miles does a typical Mercedes-benz Gls owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Mercedes-benz Gls MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Mercedes-benz Gls year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 2019 | 1,781 | 89.4% | 27,113 | 39,248 | 54,385 |
| 2018 | 3,626 | 89.1% | 28,736 | 42,180 | 59,950 |
| 2017 | 5,021 | 89.5% | 32,172 | 47,821 | 66,487 |
| 2016 | 3,658 | 87.8% | 35,528 | 52,024 | 74,235 |
How Long Does a Mercedes-benz Gls Last?
Based on 2,408 Mercedes-benz Gls vehicles on UK roads.
Mercedes-benz Gls Mileage Distribution
Total mileage recorded across all Mercedes-benz Gls MOT tests. If the car you're looking at is above the 75th percentile, it's done more miles than most.
Best Year to Buy a Used Mercedes-benz Gls
Based on MOT pass rates across all registration years with sufficient test data.
89.5% MOT pass rate from 5,021 tests
87.8% MOT pass rate from 3,658 tests
The best year to buy a used Mercedes-benz Gls is 2017, which has the highest MOT pass rate at 89.5% across 5,021 tests. The 2016 model year has the lowest pass rate at 87.8% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Mercedes-benz Gls Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Mercedes-benz Gls THIS CAR | 88.9% | 14,258 | 46,267 mi | 10 yrs |
| Mercedes-benz C | 77.6% | 8,031,355 | 77,082 mi | 32 yrs |
| Mercedes-benz E | 79.4% | 4,722,746 | 83,960 mi | 33 yrs |
| Mercedes-benz A-class | 77.6% | 4,204,702 | 57,023 mi | 28 yrs |
| BMW 320D SE | 72.1% | 9,412 | 147,998 mi | — yrs |
Compared to the Mercedes-benz C (77.6% pass rate) and the Mercedes-benz E (79.4% pass rate), the Mercedes-benz Gls outperforms both on MOT reliability.
Found a Mercedes-benz Gls you like?
Run a full vehicle history check on the specific car. See finance, stolen, write-off, mileage and MOT data for that exact vehicle.
Check a specific Mercedes-benz GlsShould you buy a used Mercedes-benz Gls?
The Mercedes-benz Gls has an overall MOT pass rate of 88.9% across 14,258 real MOT tests — comfortably above the UK average, which puts it among the more reliable models on UK roads.
On the safety side, the most frequently flagged dangerous fault is tyre tread depth below requirements of 1.6mm. Dangerous faults cause an immediate MOT failure and mean the vehicle is not roadworthy until repaired. If you're viewing a Mercedes-benz Gls with an expired or recently passed MOT, ask the seller whether any dangerous faults were found and fixed during the last test.
A typical Mercedes-benz Gls owner drives around 8,145 miles per year. If the car you're looking at is significantly above this, expect more wear on suspension, brakes and tyres. If it's well below, the vehicle may have been sitting unused — check for perished rubber, corroded discs and stale fluids.
In terms of longevity, most Mercedes-benz Gls models stay on UK roads for around 10 years. If you're buying one that's already well within that window, the data suggests it has plenty of life left provided it's been maintained.
Before committing to a purchase, we recommend running a full vehicle history check on the specific car. This will reveal any outstanding finance, stolen markers, write-off history and mileage discrepancies that the seller may not disclose — and that the MOT data alone can't tell you.