Mercedes-Benz GT MOT pass rate and common problems
96.6% of 4,830 Mercedes-Benz GT MOT tests pass.
The GT passes its MOT 96.6% of the time — well above the average across all Mercedes-Benz models, which sits at 83.5%.
The Mercedes-Benz GT passes its MOT 96.6% of the time — well above the national average for cars, which sits at 79.2%.
Own this Mercedes-Benz GT?
This is the average across every Mercedes-Benz GT in the dataset. Look up your own registration for its actual MOT history, and a free place to keep its maintenance records.
Have service invoices? Upload and keep them with your car’s history →
How to check and keep your Mercedes-Benz’s service history →
Pass rate by vehicle age
Pass rate eases gradually with age, from 100.0% at 0–3 years to 97.0% at 6–10 years.
| Vehicle age | Pass rate | Tests | Average mileage |
|---|---|---|---|
| 0–3 years | 100.0% | 69 | 13,987 miles |
| 3–6 years | 95.7% | 1,664 | 17,573 miles |
| 6–10 years | 97.0% | 3,096 | 25,267 miles |
| 10–15 years | no tests recorded | 0 | no reading |
| 15+ years | too few tests (1) | 1 | no reading |
Common MOT failure reasons for the Mercedes-Benz GT
The most common reason the Mercedes-Benz GT fails its MOT is tyres — present in 52.5% of failed tests, most often logged as "Has ply or cords exposed".
| Category | Share of failed tests | Example |
|---|---|---|
| Tyres | 52.5% | Has ply or cords exposed |
| Noise, emissions and leaks | 16.5% | Lambda reading after 2nd fast idle outside specified limits |
| Identification of the vehicle | 15.5% | Does not conform to the specified requirements |
| Lamps, reflectors and electrical equipment | 11.5% | Too low |
| Visibility | 7.5% | Does not clear the windscreen effectively |
| Suspension | 4.5% | Ball joint excessively worn |
| Brakes | 4.0% | Less than 1.5 mm thick |
| Road Wheels | 3.0% | Fixing missing |
| Seat belts and supplementary restraint systems | 1.0% | Warning lamp indicates a fault |
| Body, chassis, structure | 0.5% | Strengthening plate or fastening insecure |
Buying a used Mercedes-Benz GT: what to check
These checks follow the Mercedes-Benz GT’s own MOT record: the areas it fails on most often, and how that changes as the car gets older. None of them replaces a mechanic’s inspection, but they tell you where to look first.
The biggest drop in pass rate for the Mercedes-Benz GT comes between 0–3 years and 3–6 years old, from 100.0% to 95.7%. If you are looking at one in or just past that range, read its MOT history closely.
By mileage, the steepest fall is from 0–30,000 mi to 30,000–60,000 mi: 97.1% down to 94.8%. Mileage matters as well as age, so compare the car’s recorded mileages with its year.
1. Tyres
Recorded in 52.5% of failed Mercedes-Benz GT MOTs. Rare on young cars, but 2.3% of tests at 3–6 years failed on tyres.
Check tread depth across the whole width of every tyre, including the inner edge. Uneven wear can point to alignment or suspension problems. Look for cuts and bulges in the sidewalls.
2. Exhaust, emissions and leaks
Recorded in 16.5% of failed Mercedes-Benz GT MOTs.
Look under the car for fresh oil or coolant, and listen for blows or rattles from the exhaust. Watch for smoke from the tailpipe when the engine starts and when you accelerate.
3. Number plates and VIN
Recorded in 15.5% of failed Mercedes-Benz GT MOTs.
Match the registration plates and the VIN (usually at the base of the windscreen and on a door pillar) to the V5C.
4. Lights and electrics
Recorded in 11.5% of failed Mercedes-Benz GT MOTs.
Walk round with the lights on: headlights (dipped and main), indicators, brake lights, fog light and number-plate lamp. Check the dashboard warning lights come on with the ignition, then go out once the engine starts.
5. Windscreen and wipers
Recorded in 7.5% of failed Mercedes-Benz GT MOTs.
Look for windscreen chips and cracks in the driver’s line of sight, and check the wipers clear the screen and the washers work.
Check the car’s own MOT history. Averages describe the model, not the car in front of you. Look up its registration for past failures, advisories that were never fixed, and gaps or dips in the recorded mileage.
Ask for the service history. Invoices show what was done and when; a stamp alone shows less. See how to check Mercedes-Benz service history and what a service history check can tell you.
Related Mercedes-Benz models
- Mercedes-Benz 190 — 77.5% pass rate
- Mercedes-Benz CL — 84.0% pass rate
- Mercedes-Benz GLS — 91.1% pass rate
- Mercedes-Benz R-Class — 81.4% pass rate
- Mercedes-Benz Citan 109 Pure CDI — 78.4% pass rate
- Mercedes-Benz 500 — 87.0% pass rate
Frequently asked questions
- What is the MOT pass rate for the Mercedes-Benz GT?
- 96.6% of Mercedes-Benz GT MOT tests pass, based on 4,830 tests in the DVSA anonymised MOT tests and results dataset.
- What are the most common MOT failures for the Mercedes-Benz GT?
- The most common reason the Mercedes-Benz GT fails its MOT is tyres — present in 52.5% of failed tests, most often logged as "Has ply or cords exposed".
- What are the common problems with the Mercedes-Benz GT?
- Going by its MOT results, the most common problem areas on the Mercedes-Benz GT are tyres; exhaust, emissions and leaks; number plates and vin. Rare on young cars, but 2.3% of tests at 3–6 years failed on tyres.
- What should I check when buying a used Mercedes-Benz GT?
- Start with the areas it most often fails its MOT on: tyres; exhaust, emissions and leaks; number plates and vin; lights and electrics; windscreen and wipers. Then check the specific car's MOT history by registration for failures, advisories and mileage, and ask the seller for service invoices.
- Does this show the Mercedes-Benz GT's service history?
- No — this is MOT test data, which covers roadworthiness, not servicing. A service history is a separate record of maintenance work, which a specific car only has if its owner has kept it. See the Mercedes-Benz service history guide for how to check and keep one.