MOT performance
Porsche Cayman MOT pass rate and common failures
Across 29,543 MOT tests of the Porsche Cayman in 2023–2024, 88.9% passed first time. Allowing for age, mileage and fuel, Porsche Caymans failed 57% less often than comparable cars. The most common failure item was “position lamp: not working”, on 1.36% of tests.
29,543 MOT tests on 15,291 vehicles, 2023–2024 · Source: DVSA (Open Government Licence) · Analysis: 73 Auto
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| Figure | Value | Basis |
|---|---|---|
| First-time pass rate | 88.9% | ±0.4 pts (95%), n = 29,543 |
| Failures vs similar cars | 0.43× | same age, mileage and fuel = 1.00 |
| Tests with a dangerous defect | 2.6% | n = 29,543 |
| Average age at test | 9.9 years | n = 29,543 |
| Median mileage at test | 40,428 miles | n = 29,543 |
| Vehicles tested | 15,291 | 2023–2024 |
Where Porsche Caymans fail
The share of MOT tests that failed on each area, and how that compares with cars of the same age, mileage and fuel. Areas where the difference is large and clear link to their own page.
| Area | Tests failed on it | vs similar cars |
|---|---|---|
| Lights, reflectors and electrical | 3.6% | -63% |
| Tyres | 2.9% | -45% |
| Brakes | 2.1% | -62% |
| Suspension | 1.9% | -75% |
| Noise, emissions and leaks | 1.6% | -41% |
| Driver's view of the road | 1.3% | -71% |
| Body, chassis and structure | 0.5% | -82% |
| Registration plates and VIN | 0.5% | +85% |
| Steering | 0.5% | -66% |
| Seat belts and airbags | 0.2% | -77% |
| Road wheels | 0.1% | -58% |
| Speedometer and driving controls | 0.0% | +29% |
Most common failure items
| Item | Area | Share of tests |
|---|---|---|
| Position lamp: not working | Lights, reflectors and electrical | 1.36% |
| Tread depth: tread depth below requirements of 1.6mm | Tyres | 1.06% |
| Catalyst emissions: Lambda reading after 2nd fast idle outside specified limits | Noise, emissions and leaks | 0.92% |
| Headlamp aim: too high | Lights, reflectors and electrical | 0.85% |
| Coil spring: fractured or broken | Suspension | 0.77% |
| Rigid brake pipes: excessively corroded | Brakes | 0.76% |
| Condition: has a cut in excess of the requirements deep enough to reach the ply or cords | Tyres | 0.68% |
| Wipers: does not clear the windscreen effectively | Driver's view of the road | 0.67% |
| Malfunction indicator lamp: inoperative or indicates a malfunction | Noise, emissions and leaks | 0.47% |
| Condition: has ply or cords exposed | Tyres | 0.41% |
Most common advisories
Advisories are items the tester expects to need attention soon; they don't fail the test.
| Item | Area | Share of tests |
|---|---|---|
| Tread depth: tread depth below requirements of 1.6mm | Tyres | 7.82% |
| Brake discs: in such a condition that it is seriously weakened | Brakes | 6.71% |
| Rigid brake pipes: excessively corroded | Brakes | 6.57% |
| Condition: has a tear, caused by separation or partial failure of its structure | Tyres | 6.00% |
| Non-component advisories: Play in steering rack inner joint(s) | Other | 1.91% |
Pass rate by age
| Age at test (years) | Tests | First-time pass rate | Failures vs similar cars |
|---|---|---|---|
| 3-4 | 3,790 | 95.3% | -55% |
| 5-6 | 4,040 | 93.1% | -53% |
| 7-8 | 4,277 | 93.5% | -64% |
| 9-10 | 4,026 | 91.8% | -67% |
| 11-12 | 2,059 | 90.6% | -68% |
| 13-15 | 4,289 | 84.2% | -58% |
| 16+ | 6,015 | 78.6% | -47% |
Pass rate by registration year
| Registered | Tests | First-time pass rate | Failures vs similar cars |
|---|---|---|---|
| 2021 | 699 | 95.4% | 0.53× |
| 2020 | 1,593 | 95.9% | 0.46× |
| 2019 | 2,224 | 94.6% | 0.49× |
| 2018 | 2,420 | 93.5% | 0.48× |
| 2017 | 1,791 | 93.5% | 0.42× |
| 2016 | 1,982 | 93.6% | 0.39× |
| 2015 | 2,204 | 93.8% | 0.32× |
| 2014 | 2,401 | 92.0% | 0.34× |
| 2013 | 2,104 | 91.5% | 0.32× |
| 2012 | 696 | 91.4% | 0.31× |
| 2011 | 1,094 | 89.5% | 0.34× |
| 2010 | 1,069 | 87.5% | 0.35× |
| 2009 | 1,325 | 88.1% | 0.32× |
| 2008 | 1,777 | 80.4% | 0.50× |
| 2007 | 2,836 | 79.3% | 0.51× |
| 2006 | 2,982 | 77.7% | 0.54× |
| 2005 | 324 | 76.5% | 0.56× |
Years with fewer tests are shown for completeness; only years with enough tests have their own page.
Compared with similar models
Check a specific Porsche Cayman
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About this data. These are MOT test results, not a measure of mechanical reliability: a car's MOT outcome reflects its condition on the day, which depends on how it has been maintained and driven as well as how it was built. Figures cover class 4 vehicles (cars and light vans), normal tests only (retests excluded), outcomes pass, fail and pass after rectification at the station; vehicles at least 2.5 years old at test. Tests from 2023-01-01 to 2024-12-30. “Compared with similar cars” means compared with the national rate for cars of the same age, mileage band and fuel. Contains public sector information licensed under the Open Government Licence v3.0. Makes and models are matched to 73 Auto's vehicle catalogue; tests that can't be matched are left out rather than guessed. See how the MOT figures are produced.