Mercedes-benz Gl 320 Reliability, MOT Pass Rate & Common Faults
Free Mercedes-benz Gl 320 car check
Is the Mercedes-benz Gl 320 reliable? We analysed 13,304 real MOT tests across 894 vehicles to find out.
Got a specific Mercedes-benz Gl 320? Enter the reg for a free check:
The Mercedes-benz Gl 320 is above average for reliability based on real UK MOT data. Common problems include tyre tread depth below requirements of 1.6mm, shock absorber has a serious fluid leak and position lamp(s) not working. Here's everything you need to know before buying a used Mercedes-benz Gl 320.
Mercedes-benz Gl 320 Number Plates
Number plates registered to a Mercedes-benz Gl 320. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Mercedes-benz Gl 320 MOT Pass Rate by Year
How likely is a Mercedes-benz Gl 320 to pass its MOT? Here's the pass rate for each registration year, newest first.
Mercedes-benz Gl 320 Problems — What Goes Wrong?
The most common reasons a Mercedes-benz Gl 320 fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Mercedes-benz Gl 320 Common Faults & Problems
These are the most common serious faults found on Mercedes-benz Gl 320 models during MOT testing — flagged as dangerous or major failures that need immediate attention.
Mercedes-benz Gl 320 Mileage — What's Normal?
How many miles does a typical Mercedes-benz Gl 320 owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Mercedes-benz Gl 320 MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Mercedes-benz Gl 320 year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 2010 | 174 | 83.3% | 62,635 | 81,890 | 109,169 |
| 2009 | 1,948 | 78.9% | 56,988 | 83,703 | 114,764 |
| 2008 | 1,895 | 78.6% | 59,036 | 90,722 | 124,950 |
| 2007 | 7,509 | 78.8% | 58,565 | 88,690 | 120,233 |
| 2006 | 1,652 | 76.6% | 58,312 | 86,706 | 118,373 |
How Long Does a Mercedes-benz Gl 320 Last?
Based on 894 Mercedes-benz Gl 320 vehicles on UK roads.
Mercedes-benz Gl 320 Mileage Distribution
Total mileage recorded across all Mercedes-benz Gl 320 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 Gl 320
Based on MOT pass rates across all registration years with sufficient test data.
83.3% MOT pass rate from 174 tests
76.6% MOT pass rate from 1,652 tests
The best year to buy a used Mercedes-benz Gl 320 is 2010, which has the highest MOT pass rate at 83.3% across 174 tests. The 2006 model year has the lowest pass rate at 76.6% — 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 Gl 320 Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Mercedes-benz Gl 320 THIS CAR | 78.6% | 13,304 | 87,770 mi | 20 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 |
| Audi A4 S Line TDI | 82.2% | 11,423 | 119,229 mi | — yrs |
Compared to the Mercedes-benz C (77.6% pass rate) and the Mercedes-benz E (79.4% pass rate), the Mercedes-benz Gl 320 sits in the middle of the pack on MOT reliability.
Found a Mercedes-benz Gl 320 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 Gl 320Should you buy a used Mercedes-benz Gl 320?
The Mercedes-benz Gl 320 has an overall MOT pass rate of 78.6% across 13,304 real MOT tests — comfortably above the UK average, which puts it among the more reliable models on UK roads.
The most common problems on the Mercedes-benz Gl 320 are tyre tread depth below requirements of 1.6mm (356 recorded failures), shock absorber has a serious fluid leak (182), and position lamp(s) not working (131). These are the faults most likely to cause an MOT failure on this model, so check for them carefully on any test drive or pre-purchase inspection. Many are wear-and-tear items that can be budgeted for, but a car that's already failing on multiple fronts may signal neglected maintenance.
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 Gl 320 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 Gl 320 owner drives around 7,491 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 Gl 320 models stay on UK roads for around 20 years — a strong showing that suggests solid build quality and readily available parts. If you're buying one that's already approaching 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.