Pass rate
94.6%
Above average — 8.6 pts ahead of the 86.0% that cars this age and mileage manage.
Across 2,732 recorded tests.
Typical repair bill £42–£95
2017 Porsche Cayman MOT pass rate
- 2017
- typical 30,642 mi
Check your postcode
Most common fault
Tyres
52.4% of faults · 19.8% nationally
mostly tread below the limit, cuts and sidewall bulges.
Part only £55–£85 for Tread depth below 1.6 mm. What fitting it takes →
0.7 pts down across model years — 3.3% in 2006, 2.6% in 2020.
Which year to buy
- Best 2021 96.8% pass
- Avoid 2005 83.5% pass
Across the 18 years on record, a spread of 13.3 points. See every year →
- First-attempt pass
- 94.3%
- Typical mileage
- 31k mi
The 2017 Porsche Cayman MOT pass rate is 94.6% of its MOT tests — 8.6 points ahead of what its age and mileage predict. Tyres is the biggest single reason it fails, at 52.4% of what testers record.
Expert verdict
Tyres: 2.7× the national share
Tyres make up 52.4% of everything recorded on the 2017 Porsche Cayman, against 19.8% nationally — 32.6 points above. Check all four tyres yourself, including the inner shoulders, and look at the date stamp — a tyre can pass on tread and still be six years old.
- Beats its own age and mileage. Once you allow for how old and how far these cars have been driven, the expected pass rate is 86.0% and this one manages 94.6% — 8.6 points ahead of what its age and mileage predict.
- When it fails, it costs. Only 27% of this model’s typical repairs come in under £30 in parts — the failures here tend to be the kind that need a garage rather than a bulb.
Written from this page's own figures: fault shares against the national composition, the like-for-like pass rate, and the priced repair list. How these are worked out
Watching a Porsche Cayman? Get an email when these numbers change .
How does the 2017 Porsche Cayman compare?
Cars of this age and mileage average 86.0%, so this figure is 8.6 points ahead of what its age and mileage predict. On a first attempt, before any retests, the figure drops to 94.3%. The median 2017 Porsche Cayman in this dataset had covered 30,642 mi.
Pass rates also shift with the test month: tests recorded October–March passed 94.0% of the time, April–September 95.2%.
The single most recorded failure item is "Windscreen damaged but not adversely affecting driver's view", noted on 1.10% of tests.
- 2,732 recorded tests behind this page.
- 94.6% overall pass rate, 94.3% on a first attempt.
- Across every year of the Porsche Cayman, the average is 91.0% — best year 2021 (96.8%), worst 2005 (83.5%).
Figures count every completed test on this vehicle-year in the dataset, including retests. See methodology for the exact definition.
This page's data
- Tests analysed
- 2,732
- Typical mileage (median)
- 30,642 mi
- Make and model
- Porsche Cayman
- Updated
- 2026-11-07
Source: DVSA anonymised MOT test data (2023–2025), OGL v3.0.
Top part to budget for
Windscreen
Typically a garage job — get quotes before committing.
Does mileage affect the Cayman MOT pass rate?
Pass rate by odometer reading. Bar lengths start at 80% so small gaps stay visible.
Where the Porsche Cayman is most common
Across all Cayman model years on record (2005–2022): 24,137 Porsche Cayman cars tested in a recordable postcode area, across 45,332 tests. Guildford (GU) has the most, with 672 cars tested there. Cars are counted by the postcode area of the MOT station, so this is where they were tested, not necessarily where their owners live.
| # | Postcode area | Cars | Pass rate |
|---|---|---|---|
| 1 | Guildford (GU) | 672 | 93.5% |
| 2 | Birmingham (B) | 629 | 93.8% |
| 3 | Reading (RG) | 570 | 92.8% |
| 4 | Crawley (RH) | 513 | 89.3% |
| 5 | Ashford (TN) | 508 | 91.3% |
| 6 | Northampton (NN) | 497 | 90.6% |
| 7 | Nottingham (NG) | 489 | 90.3% |
| 8 | Leicester (LE) | 474 | 92.1% |
| 9 | Derby (DE) | 456 | 93.9% |
| 10 | Sheffield (S) | 433 | 92.8% |
| 11 | Portsmouth (PO) | 429 | 91.6% |
| 12 | Gloucester (GL) | 411 | 89.3% |
| 13 | Coventry (CV) | 397 | 93.4% |
| 14 | High Wycombe (HP) | 385 | 93.8% |
| 15 | Kingston upon Thames (KT) | 384 | 92.1% |
| 16 | Leeds (LS) | 383 | 91.0% |
| 17 | Chelmsford (CM) | 364 | 91.2% |
| 18 | Swindon (SN) | 362 | 91.0% |
| 19 | Slough (SL) | 353 | 90.8% |
| 20 | Bristol (BS) | 348 | 87.7% |
The twenty areas with the most Porsche Cayman cars in the record, sorted by car count — sort the columns for a different question. Cars tested at a station whose postcode area could not be resolved are counted in the model's total but in no area, so the shares add up to slightly under 100% even across every area, and an area's cars are a subset of the model's. Pass rate is blank below 30 tests in an area, where a percentage is noise rather than a finding. How this model's pass rate varies by postcode →
Regional pass rates for the Cayman
| Region | Tests | Pass rate |
|---|---|---|
| South East | 592 | 94.6% |
| North West | 310 | 94.8% |
| East of England | 289 | 94.8% |
| East Midlands | 263 | 96.2% |
| West Midlands | 256 | 94.5% |
| South West | 252 | 91.7% |
| Yorkshire | 216 | 94.9% |
| London | 178 | 94.9% |
| Scotland | 177 | 93.2% |
| Wales | 103 | 94.2% |
| North East | 96 | 97.9% |
Regions come from the postcode area recorded at the test station. Areas on region borders are assigned to the region with the majority of their population.
What fails a 2017 Cayman
Everything a tester recorded on this vehicle, grouped into the inspection sections that produced it. The notch on each bar is the national share, so you can see at a glance whether this car is unusual or just ordinary.
A test can record several items, so these percentages do not add up to 100%. The exact strings, with prices, are in the full DVSA record at the bottom of this page.
Before your test
Three checks worth doing on a 2017 Cayman
These are not generic tips — they are the faults recorded most often on this exact model, rewritten as things you can check yourself. All three take about ten minutes and cost nothing.
-
Check the windscreen 1.1% of tests
“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.
-
Check the tyre tread 1.1% of tests
“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.
-
Check the wipers and washers 0.6% of tests
“wipers blade defective”
Run the wipers with the screen wet: they should clear it in one sweep without smearing or juddering. Top the washer bottle up and check both jets hit the screen.
Shares are the proportion of tests on this vehicle that recorded the item, so they overlap: one test can record several.
What it costs to get a 2017 Cayman through its MOT
Across the 10 items that are recorded most often on this model, the average repair comes to £42–£95 — and 27% of those repairs are parts that cost under £30.
- Average repair across the 10 common items
- £42–£95
- Cheapest common item: washers provides insufficient washer liquid
- £5–£15
- Dearest common item: windscreen damaged
- £80–£200
- Common items a careful owner can do at home
- 90%
- Repairs that still cost under £30
- 27%
Estimates from typical UK parts prices, weighted by how often each item appears in 2,732 MOT tests on this vehicle. They exclude diagnostics, retest fees and garage labour where the part is a DIY fit, and they are not figures from the DVSA dataset. Older and higher-mileage examples cost more than the average. How these estimates are built → · All MOT repair costs → · Cheapest cars to put through a test →
Every year of the Cayman, side by side
18 model years on record, from 2005 to 2022. Across them the pass rate runs from 83.5% to 96.8% — a spread of 13.3 points. The bar under each year is the item that failed it most often.
- 2005 83.5% catalyst emissions lambda reading…
- 2006 83.8% catalyst emissions lambda reading…
- 2007 85.3% position lamp not working
- 2008 84.8% position lamp not working
- 2009 90.3% windscreen damaged but not…
- 2010 89.9% windscreen damaged but not…
- 2011 91.0% windscreen damaged but not…
- 2012 93.4% windscreen damaged but not…
- 2013 92.7% windscreen damaged but not…
- 2014 93.2% windscreen damaged but not…
- 2015 94.7% windscreen damaged but not…
- 2016 94.8% windscreen damaged but not…
- 2017 94.6%windscreen damaged but not…
- 2018 94.7% windscreen damaged but not…
- 2019 95.1% windscreen damaged but not…
- 2020 96.1% windscreen damaged but not…
- 2021 96.8% windscreen damaged but not…
- 2022 96.1% tread depth below requirements of…
Colour is the pass rate on a fixed scale, so a block means the same thing on any model. Each year links to its own page with the full fault breakdown.
Compare the 2017 Porsche Cayman with another year
The raw pass rate mostly measures age. The year comparison adds the like-for-like figure, the mileage bands and the repair bill.
Other 2017 cars with a similar record
- Lexus Rx 94.9%
- Audi A8 93.8%
- Aston Martin DB11 95.5%
- Lexus Nx 93.5%
- Mazda Mx-5 93.0%
- Jaguar F-Type 92.9%
Closest pass rates among 2017 cars with at least 2,000 tests, so a small sample cannot flatter itself into the list. See the full rankings: best and worst MOT pass rates.
The full DVSA record for the 2017 Porsche Cayman 10 failure items · 6 advisories · 10 inspection categories · mileage brackets · all of it in the page, none of it above the fold
Every inspection category
Shares of the 1,158 individual items recorded on this vehicle, and the same share across all cars nationally. A single test can record several items, so a row is not a percentage of tests.
| Category | Items | This car | Nationally | Difference |
|---|---|---|---|---|
| Tyres | 609 | 52.40% | 19.76% | +32.64 |
| Brakes | 205 | 17.60% | 20.89% | −3.29 |
| Visibility | 83 | 7.10% | 4.97% | +2.13 |
| Suspension | 76 | 6.50% | 20.98% | −14.48 |
| Non-component advisories | 60 | 5.20% | 4.18% | +1.02 |
| Lamps, reflectors and electrical equipment | 43 | 3.70% | 12.21% | −8.51 |
| Body, chassis, structure | 29 | 2.50% | 5.57% | −3.07 |
| Noise, emissions and leaks | 26 | 2.20% | 5.52% | −3.32 |
| Identification of the vehicle | 18 | 1.50% | 1.76% | −0.26 |
| Road Wheels | 9 | 0.80% | 0.75% | +0.05 |
The exact failure items, in the tester's words
| Recorded item | Severity | Tests | Est. cost |
|---|---|---|---|
| Windscreen damaged but not adversely affecting driver's view Visibility | Minor | 1.1% | £80–200 |
| Tread depth below requirements of 1.6mm Tyres | Major | 1.1% | £45–95 |
| Has a cut in excess of the requirements deep enough to reach the ply or cords Tyres | Major | 0.81% | £45–95 |
| Wipers blade defective Visibility | Minor | 0.55% | £8–22 |
| Has a bulge, caused by separation or partial failure of its structure Tyres | Major | 0.40% | £45–95 |
| Tyre pressure monitoring system malfunctioning or obviously inoperative Tyres | Rectified | 0.33% | £45–95 |
| Washers provides insufficient washer liquid Visibility | Major | 0.33% | £5–15 |
| Wipers does not clear the windscreen effectively Visibility | Major | 0.33% | £8–22 |
| Washers not working Visibility | Major | 0.29% | £5–15 |
| Has ply or cords exposed Tyres | Major | 0.26% | £45–95 |
Severity is as recorded: Major and Dangerous fail the test outright; Minor and Advisory do not. Costs are estimates from typical UK parts prices — see how they are built.
What testers noted without failing the car
Advisories are the early warnings — the same parts a year or two before they fail. Reading them is how you tell a car that has been maintained from one that has been patched.
| Recorded item | Severity | Tests | Est. cost |
|---|---|---|---|
| Tread depth below requirements of 1.6mm Tyres | Advisory | 9.0% | £45–95 |
| Has a tear, caused by separation or partial failure of its structure Tyres | Advisory | 6.6% | £45–95 |
| Brake discs in such a condition that it is seriously weakened Brakes | Advisory | 3.0% | £45–110 |
| Brake pads less than 1.5 mm thick Brakes | Advisory | 2.0% | £18–45 |
| Tread depth tread pattern not visible over the whole tread area when minimum depth required is 1.0mm Tyres | Advisory | 1.6% | £45–95 |
| Non-component advisories Nail in tyre Non-component advisories | Advisory | 1.5% | £45–95 |
Pass rate by mileage
| Mileage | Tests | Pass rate | Median odometer |
|---|---|---|---|
| 0-30k | 1,314 | 96.3% | 19,886 mi |
| 30-60k | 1,260 | 93.6% | 41,402 mi |
| 60-90k | 146 | 88.4% | 68,469 mi |
| 90-120k | 11 | 90.9% | 101,673 mi |
| 120k+ | 1 | 100.0% | 181,231 mi |
Source: 2,732 recorded tests on this vehicle-year. Every row above is recomputed from the same DVSA extract as the rest of the page — see the methodology.
2017 Cayman MOT questions
What is the MOT pass rate for a 2017 Porsche Cayman?
94.6% of the 2,732 2017 Porsche Cayman tests in this dataset passed, against a national average of 86.0% for cars first used in 2017. First-attempt pass rate: 94.3%.
What are the most common MOT failures on a 2017 Porsche Cayman?
The three most recorded items are windscreen damaged but not adversely affecting driver's view (1.10%), tread depth below requirements of 1.6mm (1.06%), has a cut in excess of the requirements deep enough to reach the ply or cords (0.81%). Percentages are the share of tests on this vehicle that recorded the item.
Does mileage affect the 2017 Porsche Cayman MOT pass rate?
Yes. Cars under 30,000 miles passed 96.3% of the time, falling to 100.0% for those over 120,000 miles. The median 2017 Porsche Cayman in this dataset had covered 30,642 mi.
Does the season affect the 2017 Porsche Cayman MOT pass rate?
Tests recorded in the winter months (October–March) passed 94.0% of the time; summer months (April–September) passed 95.2%. Brakes, tyres and lights are tested harder in bad weather, but the difference is small on most models.