Pass rate
83.5%
Around average — 1.4 pts ahead of the 82.1% that cars this age and mileage manage.
Across 496 recorded tests.
Typical repair bill £35–£89
2015 Mercedes-Benz G-Class MOT pass rate
- 2015
- typical 50,635 mi
Most common fault
Brakes
22.2% of faults · 20.9% nationally
mostly worn pads and discs, corroded pipes and a handbrake that will not hold.
Which year to buy
- Best 2020 96.2% pass
- Avoid 2015 83.5% pass · this year
Across the 10 years on record, a spread of 12.7 points. See every year →
- First-attempt pass
- 81.4%
- Typical mileage
- 51k mi
The 2015 Mercedes-Benz G-Class MOT pass rate is 83.5% of its MOT tests — 1.4 points ahead of what its age and mileage predict. Brakes is the biggest single reason it fails, at 22.2% of what testers record.
Check your postcode
MOT pass rates are national — type your postcode to see how Mercedes-Benz G-Class does in your corner of the country.
Expert verdict
Emissions & leaks: 2.3× the national share
Emissions & leaks make up 12.6% of everything recorded on the 2015 Mercedes-Benz G-Class, against 5.5% nationally — 7.1 points above. Brakes are still the single largest share at 22.2%, but at 20.9% nationally that one is ordinary. A smoky diesel or a leaking joint fails on emissions more often than on wear, so ask for a recent emissions printout.
- When it fails, it costs. Only 28% of this model’s typical repairs come in under £30 in parts — the failures here tend to be the kind that need a garage rather than a bulb.
Written from this page's own figures: fault shares against the national composition, the like-for-like pass rate, and the priced repair list. How these are worked out
Watching a Mercedes-Benz G-Class? Get an email when these numbers change .
How does the 2015 Mercedes-Benz G-Class compare?
Cars of this age and mileage average 82.1%, so this figure is 1.4 points ahead of what its age and mileage predict. On a first attempt, before any retests, the figure drops to 81.4%. The median 2015 Mercedes-Benz G-Class in this dataset had covered 50,635 mi.
The most common fuel recorded here is Petrol — 58% of tests, with a 83.7% pass rate. Pass rates also shift with the test month: tests recorded October–March passed 81.5% of the time, April–September 85.5%.
The single most recorded failure item is "Windscreen damaged but not adversely affecting driver's view", noted on 3.83% of tests.
- 496 recorded tests behind this page.
- 83.5% overall pass rate, 81.4% on a first attempt.
- Across every year of the Mercedes-Benz G-Class, the average is 87.9% — best year 2020 (96.2%), worst 2015 (83.5%).
Figures count every completed test on this vehicle-year in the dataset, including retests. See methodology for the exact definition.
This page's data
- Tests analysed
- 496
- Typical mileage (median)
- 50,635 mi
- Make and model
- Mercedes-Benz G-Class
- Updated
- 2026-11-05
Source: DVSA anonymised MOT test data (2023–2025), OGL v3.0.
Top part to budget for
Windscreen
Typically a garage job — get quotes before committing.
Does mileage affect the G-Class MOT pass rate?
Pass rate by odometer reading. Bar lengths start at 72% so small gaps stay visible.
Fuel type and reliability
Pass rate by fuel type. Petrol is the most common here (58% of tests).
Regional pass rates for the G-Class
| Region | Tests | Pass rate |
|---|---|---|
| South East | 138 | 82.6% |
| East of England | 64 | 82.8% |
| London | 62 | 88.7% |
| South West | 48 | 70.8% |
| West Midlands | 39 | 94.9% |
| North West | 39 | 87.2% |
| East Midlands | 33 | 84.8% |
| Yorkshire | 31 | 87.1% |
| Scotland | 15 | 80.0% |
Regions come from the postcode area recorded at the test station. Areas on region borders are assigned to the region with the majority of their population.
What fails a 2015 G-Class
Everything a tester recorded on this vehicle, grouped into the inspection sections that produced it. The notch on each bar is the national share, so you can see at a glance whether this car is unusual or just ordinary.
A test can record several items, so these percentages do not add up to 100%. The exact strings, with prices, are in the full DVSA record at the bottom of this page.
Before your test
Three checks worth doing on a 2015 G-Class
These are not generic tips — they are the faults recorded most often on this exact model, rewritten as things you can check yourself. All three take about ten minutes and cost nothing.
-
Check the windscreen 3.8% of tests
“windscreen damaged”
Check the driver’s side of the screen within the swept area for chips and cracks; anything larger than 10mm in the driver’s central view is a fail. Most chips can be resin-repaired for far less than a new screen.
-
Check the wipers and washers 2.2% of tests
“wipers does not clear the windscreen effectively”
Run the wipers with the screen wet: they should clear it in one sweep without smearing or juddering. Top the washer bottle up and check both jets hit the screen.
-
Check the number plates 1.8% of tests
“registration plates does not conform to the specified requirements”
Check both plates are present, legible and correctly spaced, with the postcode of the supplier and the BS AU 145e mark. A private plate in the wrong style is a fail before the car is even looked at.
Shares are the proportion of tests on this vehicle that recorded the item, so they overlap: one test can record several.
What it costs to get a 2015 G-Class through its MOT
Across the 10 items that are recorded most often on this model, the average repair comes to £35–£89 — and 28% of those repairs are parts that cost under £30.
- Average repair across the 10 common items
- £35–£89
- Cheapest common item: malfunction indicator lamp inoperative or…
- £3–£12
- Dearest common item: windscreen damaged
- £80–£200
- Common items a careful owner can do at home
- 80%
- Repairs that still cost under £30
- 28%
Estimates from typical UK parts prices, weighted by how often each item appears in 496 MOT tests on this vehicle. They exclude diagnostics, retest fees and garage labour where the part is a DIY fit, and they are not figures from the DVSA dataset. Older and higher-mileage examples cost more than the average. How these estimates are built → · All MOT repair costs → · Cheapest cars to put through a test →
Every year of the G-Class, side by side
10 model years on record, from 2011 to 2020. Across them the pass rate runs from 83.5% to 96.2% — a spread of 12.7 points. The bar under each year is the item that failed it most often.
- 2011 88.6% windscreen damaged but not…
- 2012 84.5% malfunction indicator lamp…
- 2013 89.8% coil spring fractured or broken
- 2014 86.6% coil spring fractured or broken
- 2015 83.5%windscreen damaged but not…
- 2016 88.1% coil spring fractured or broken
- 2017 87.3% windscreen damaged but not…
- 2018 90.0% has a cut in excess of the…
- 2019 90.9% windscreen damaged but not…
- 2020 96.2% door condition cannot be opened…
Colour is the pass rate on a fixed scale, so a block means the same thing on any model. Each year links to its own page with the full fault breakdown.
Compare the 2015 Mercedes-Benz G-Class with another year
The raw pass rate mostly measures age. The year comparison adds the like-for-like figure, the mileage bands and the repair bill.
Other 2015 cars with a similar record
- Kia Rio 83.6%
- Mitsubishi Asx 83.4%
- Hyundai Santa Fe 83.6%
- Volvo XC90 83.6%
- Volvo S60 83.6%
- Skoda Fabia 83.7%
Closest pass rates among 2015 cars with at least 2,000 tests, so a small sample cannot flatter itself into the list. See the full rankings: best and worst MOT pass rates.
The full DVSA record for the 2015 Mercedes-Benz G-Class 10 failure items · 6 advisories · 10 inspection categories · mileage brackets · all of it in the page, none of it above the fold
Every inspection category
Shares of the 505 individual items recorded on this vehicle, and the same share across all cars nationally. A single test can record several items, so a row is not a percentage of tests.
| Category | Items | This car | Nationally | Difference |
|---|---|---|---|---|
| Brakes | 113 | 22.20% | 20.89% | +1.31 |
| Tyres | 81 | 15.90% | 19.76% | −3.86 |
| Lamps, reflectors and electrical equipment | 72 | 14.10% | 12.21% | +1.89 |
| Noise, emissions and leaks | 64 | 12.60% | 5.52% | +7.08 |
| Visibility | 48 | 9.40% | 4.97% | +4.43 |
| Suspension | 35 | 6.90% | 20.98% | −14.08 |
| Steering | 32 | 6.30% | 2.57% | +3.73 |
| Body, chassis, structure | 23 | 4.50% | 5.57% | −1.07 |
| Non-component advisories | 22 | 4.30% | 4.18% | +0.12 |
| Identification of the vehicle | 15 | 2.90% | 1.76% | +1.14 |
The exact failure items, in the tester's words
| Recorded item | Severity | Tests | Est. cost |
|---|---|---|---|
| Windscreen damaged but not adversely affecting driver's view Visibility | Minor | 3.8% | £80–200 |
| Has a cut in excess of the requirements deep enough to reach the ply or cords Tyres | Major | 2.6% | £45–95 |
| Wipers does not clear the windscreen effectively Visibility | Major | 2.2% | £8–22 |
| Registration plates does not conform to the specified requirements Identification of the vehicle | Major | 1.8% | £20–80 |
| Wipers blade defective Visibility | Minor | 1.6% | £8–22 |
| Headlamp aim too low Lamps, reflectors and electrical equipment | Major | 1.4% | £30–80 |
| Malfunction indicator lamp inoperative or indicates a malfunction Noise, emissions and leaks | Major | 1.4% | £3–12 |
| Rbt (sp) efficiency below requirements Brakes | Major | 1.4% | £45–110 |
| Track rod end ball joint dust cover damaged or deteriorated, but preventing the ingress of dirt Steering | Minor | 1.2% | £18–45 |
| Coil spring fractured or broken Suspension | Major | 1.0% | £25–65 |
Severity is as recorded: Major and Dangerous fail the test outright; Minor and Advisory do not. Costs are estimates from typical UK parts prices — see how they are built.
What testers noted without failing the car
Advisories are the early warnings — the same parts a year or two before they fail. Reading them is how you tell a car that has been maintained from one that has been patched.
| Recorded item | Severity | Tests | Est. cost |
|---|---|---|---|
| Has a tear, caused by separation or partial failure of its structure Tyres | Advisory | 6.3% | £45–95 |
| Brake discs in such a condition that it is seriously weakened Brakes | Advisory | 6.0% | £45–110 |
| Brake pads less than 1.5 mm thick Brakes | Advisory | 5.7% | £18–45 |
| Engine oil leaks leaking excessively from engine Noise, emissions and leaks | Advisory | 5.2% | £200–700 |
| Transmission oil leaks leaking excessively from transmission Noise, emissions and leaks | Advisory | 4.0% | £200–700 |
| Individual direction indicators incorrect colour Lamps, reflectors and electrical equipment | Advisory | 3.8% | £3–12 |
Pass rate by mileage
| Mileage | Tests | Pass rate | Median odometer |
|---|---|---|---|
| 0-30k | 62 | 95.2% | 21,017 mi |
| 30-60k | 266 | 81.6% | 45,142 mi |
| 60-90k | 136 | 82.4% | 71,885 mi |
| 90-120k | 27 | 81.5% | 101,258 mi |
| 120k+ | 5 | 80.0% | 148,645 mi |
Source: 496 recorded tests on this vehicle-year. Every row above is recomputed from the same DVSA extract as the rest of the page — see the methodology.
2015 G-Class MOT questions
What is the MOT pass rate for a 2015 Mercedes-Benz G-Class?
83.5% of the 496 2015 Mercedes-Benz G-Class tests in this dataset passed, against a national average of 82.1% for cars first used in 2015. First-attempt pass rate: 81.4%.
What are the most common MOT failures on a 2015 Mercedes-Benz G-Class?
The three most recorded items are windscreen damaged but not adversely affecting driver's view (3.83%), has a cut in excess of the requirements deep enough to reach the ply or cords (2.62%), wipers does not clear the windscreen effectively (2.22%). Percentages are the share of tests on this vehicle that recorded the item.
Does mileage affect the 2015 Mercedes-Benz G-Class MOT pass rate?
Yes. Cars under 30,000 miles passed 95.2% of the time, falling to 80.0% for those over 120,000 miles. The median 2015 Mercedes-Benz G-Class in this dataset had covered 50,635 mi.
Which fuel type is most reliable for a 2015 Mercedes-Benz G-Class?
Petrol: 83.7% pass rate across 289 tests. Diesel: 83.1% pass rate across 207 tests. Shares are of the tests on this vehicle that recorded each fuel type.
Does the season affect the 2015 Mercedes-Benz G-Class MOT pass rate?
Tests recorded in the winter months (October–March) passed 81.5% of the time; summer months (April–September) passed 85.5%. Brakes, tyres and lights are tested harder in bad weather, but the difference is small on most models.