Mercedes-Benz GT MOT Pass Rate & Official DVSA Failure Statistics

Mercedes-Benz GT MOT History and Failure Rates vs UK National Average

The Mercedes-Benz GT passed on its first attempt in 93.4%, and its overall record sits +12.7 percentage points above the national average for all cars. These figures come from every recorded DVSA MOT test for the Mercedes-Benz GT in the 2023–2025 data: 3,985 tests across 6 model years (2015–2020). A test still carries exactly one pass or fail verdict.

Figures are computed from every recorded DVSA test for this model in the 2023–2025 data.

Most Common Mercedes-Benz GT MOT Problems by Failure Category

Every MOT failure a tester records belongs to one inspection section of the DVSA manual. For the Mercedes-Benz GT, the Tyres section leads the record — the breakdown below shows where the recorded failures cluster, then the exact strings behind the three biggest sections.

Shares are over the Mercedes-Benz GT's recorded defect strings, merged across its year pages.

Top Recorded Mercedes-Benz GT DVSA MOT Test Statistics & Defect Descriptions

The descriptions below are the exact DVSA failure strings testers recorded most often for the Mercedes-Benz GT, each with how many of the model's 3,985 tests it was noted on.

• "Windscreen damaged but not adversely affecting driver's view" (Minor) — noted on about 87 Mercedes-Benz GT tests, 2.2% of the model's MOT record.
• "Has a cut in excess of the requirements deep enough to reach the ply or cords" (Major) — noted on about 44 Mercedes-Benz GT tests, 1.1% of the model's MOT record.
• "Has ply or cords exposed" (Major) — noted on about 42 Mercedes-Benz GT tests, 1.1% of the model's MOT record.
• "Registration plates does not conform to the specified requirements" (Major) — noted on about 25 Mercedes-Benz GT tests, 0.6% of the model's MOT record.
• "Tread depth below requirements of 1.6mm" (Major) — noted on about 21 Mercedes-Benz GT tests, 0.5% of the model's MOT record.
• "Catalyst emissions Lambda reading after 2nd fast idle outside specified limits" (Major) — noted on about 13 Mercedes-Benz GT tests, 0.3% of the model's MOT record.

Best and Worst Mercedes-Benz GT Model Years by Pass Rate

The strongest Mercedes-Benz GT model year on record is 2018 (95.1% across 893 tests), and the weakest is 2015 (92.7%). The gap between them is 2.4 points. Years with fewer than 50 recorded tests are excluded, so these are the years with enough MOT history to mean something.

Newest model year first. Only years with at least 50 recorded tests are listed.

Pre-MOT Inspection Checklist for Mercedes-Benz GT Owners

These checks follow this Mercedes-Benz GT's own most-recorded failure strings, starting with what a tester is most likely to flag on a Mercedes-Benz GT.

• the windscreen — “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.

• the number plates — “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.

• the tyre tread — “tread depth below requirements of 1.6mm”

  Check all four tyres cold, including the inner shoulder where wear hides — 1.6mm across the central three-quarters is the legal limit, and most testers fail at 1.6mm without argument.

Derived from the DVSA failure strings testers recorded for the Mercedes-Benz GT. A check that finds nothing means the item is likely fine, not that the test is guaranteed.

Frequently Asked Questions: Mercedes-Benz GT MOT & Reliability