P Porsche 718 Cayman GT4 MOT Pass Rate & Official DVSA Failure Statistics

Porsche 718 Cayman GT4 MOT History and Failure Rates vs UK National Average

The Porsche 718 Cayman GT4 passed on its first attempt in 96.7%, and its overall record sits +15.8 percentage points above the national average for all cars. These figures come from every recorded DVSA MOT test for the Porsche 718 Cayman GT4 in the 2023–2025 data: 2,026 tests across 4 model years (2019–2022). 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 Porsche 718 Cayman GT4 MOT Problems by Failure Category

Every MOT failure a tester records belongs to one inspection section of the DVSA manual. For the Porsche 718 Cayman GT4, 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 Porsche 718 Cayman GT4's recorded defect strings, merged across its year pages.

Top Recorded Porsche 718 Cayman GT4 DVSA MOT Test Statistics & Defect Descriptions

The descriptions below are the exact DVSA failure strings testers recorded most often for the Porsche 718 Cayman GT4, each with how many of the model's 2,026 tests it was noted on.

• "Windscreen damaged but not adversely affecting driver's view" (Minor) — noted on about 22 Porsche 718 Cayman GT4 tests, 1.1% 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 21 Porsche 718 Cayman GT4 tests, 1.0% of the model's MOT record.
• "Registration plates does not conform to the specified requirements" (Major) — noted on about 11 Porsche 718 Cayman GT4 tests, 0.5% of the model's MOT record.
• "Has ply or cords exposed" (Major) — noted on about 6 Porsche 718 Cayman GT4 tests, 0.3% of the model's MOT record.
• "Headlamp aim too high" (Rectified) — noted on about 5 Porsche 718 Cayman GT4 tests, 0.2% of the model's MOT record.
• "Tread depth below requirements of 1.6mm" (Major) — noted on about 5 Porsche 718 Cayman GT4 tests, 0.2% of the model's MOT record.

Best and Worst Porsche 718 Cayman GT4 Model Years by Pass Rate

The strongest Porsche 718 Cayman GT4 model year on record is 2019 (98.0% across 246 tests), and the weakest is 2021 (95.4%). The gap between them is 2.6 points. Years with fewer than 50 recorded tests are excluded, so these are the years with enough MOT history to mean something.

Porsche 718 Cayman GT4 reliability is declining in the DVSA data — the pass rate moves about 0.9 points a year across the most recent model years shown above.

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

Pre-MOT Inspection Checklist for Porsche 718 Cayman GT4 Owners

These checks follow this Porsche 718 Cayman GT4's own most-recorded failure strings, starting with what a tester is most likely to flag on a Porsche 718 Cayman GT4.

• 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 lights — “headlamp aim too high”

  Switch everything on and walk round the car: both headlamps on dip and main, every indicator, both brake lights, reverse, fog and the two number-plate lamps. A bulb is a few pounds and a five-minute job.

Derived from the DVSA failure strings testers recorded for the Porsche 718 Cayman GT4. A check that finds nothing means the item is likely fine, not that the test is guaranteed.

Frequently Asked Questions: Porsche 718 Cayman GT4 MOT & Reliability