P Porsche 911 Carrera MOT Pass Rate & Official DVSA Failure Statistics

Porsche 911 Carrera MOT History and Failure Rates vs UK National Average

The Porsche 911 Carrera passed on its first attempt in 93.7%, and its overall record sits +13.0 percentage points above the national average for all cars. These figures come from every recorded DVSA MOT test for the Porsche 911 Carrera in the 2023–2025 data: 6,884 tests across 17 model years (2001–2022). 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 911 Carrera MOT Problems by Failure Category

Every MOT failure a tester records belongs to one inspection section of the DVSA manual. For the Porsche 911 Carrera, 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 911 Carrera's recorded defect strings, merged across its year pages.

Top Recorded Porsche 911 Carrera DVSA MOT Test Statistics & Defect Descriptions

The descriptions below are the exact DVSA failure strings testers recorded most often for the Porsche 911 Carrera, each with how many of the model's 6,884 tests it was noted on.

• "Windscreen damaged but not adversely affecting driver's view" (Minor) — noted on about 108 Porsche 911 Carrera tests, 1.6% 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 75 Porsche 911 Carrera tests, 1.1% of the model's MOT record.
• "Tread depth below requirements of 1.6mm" (Major) — noted on about 54 Porsche 911 Carrera tests, 0.8% of the model's MOT record.
• "Headlamp aim too high" (Rectified) — noted on about 42 Porsche 911 Carrera tests, 0.6% of the model's MOT record.
• "Catalyst emissions Lambda reading after 2nd fast idle outside specified limits" (Major) — noted on about 34 Porsche 911 Carrera tests, 0.5% of the model's MOT record.
• "Has ply or cords exposed" (Major) — noted on about 31 Porsche 911 Carrera tests, 0.4% of the model's MOT record.

Best and Worst Porsche 911 Carrera Model Years by Pass Rate

The strongest Porsche 911 Carrera model year on record is 2022 (97.1% across 1,128 tests), and the weakest is 2013 (81.8%). The gap between them is 15.3 points. Years with fewer than 50 recorded tests are excluded, so these are the years with enough MOT history to mean something.

Porsche 911 Carrera reliability is improving in the DVSA data — the pass rate moves about 2.2 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 911 Carrera Owners

These checks follow this Porsche 911 Carrera's own most-recorded failure strings, starting with what a tester is most likely to flag on a Porsche 911 Carrera.

• 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 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.

• 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 911 Carrera. A check that finds nothing means the item is likely fine, not that the test is guaranteed.

Frequently Asked Questions: Porsche 911 Carrera MOT & Reliability