MOT data

Porsche Cayman MOT fail rate by age and year

DVSA MOT tests 2022–2025 · 59,394 MOT tests · Updated 7 Oct 2026

At 16 years, 23.5% of Porsche Cayman MOT tests ended in a fail (adjusted to typical mileage), against 43.1% for all class 4 vehicles tested at 16 (4,566 MOT tests) ^[1].

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First used 2007: 22.3 pts below cars the same age, 5,742 MOT tests
Lights and electrics: fails less often than cars the same age (0.4× (0.35–0.43×)) at 16 years, 362 of 4,566 MOT tests
Mileage: median 72,090 miles at 16 years against 102,757 for all class 4 vehicles, 4,566 MOT tests

Which engine and year a car has decides which of these apply. Check the reg first.

Figures are for the model, not one car, and compare with all class 4 vehicles tested at 16 in the same test year.

Fail rate at 16 years, typical mileage: 23.5%; vs 43.1% for all class 4 vehicles tested at 16; 4,566 MOT tests
Fail rate at 16 years, raw: 19.6%; vs 43.1% for all class 4 vehicles tested at 16; 4,566 MOT tests
Median mileage at 16 years: 72,090 mi; vs 102,757 mi for all class 4 vehicles; 4,566 MOT tests

Porsche Cayman MOT fail rate by age

Each line follows the cars first used in one year across the ages they were tested at from 2022 to 2025, so a line never mixes a 2005 car with a 2015 one. 59k DVSA MOT tests in all (59,394).

At 16 years and typical mileage that is 45% fewer fails than all class 4 vehicles tested at 16 (4,566 MOT tests).

Porsche Cayman, one line per first-use year (darker = newer) all class 4 vehicles at the same age

Porsche Cayman: share of MOT tests that failed, by age. Only ages with at least 1,000 MOT tests. 'Typical mileage' is n/a where the model's mileage bands cover less than 80% of the national mix.
Age	MOT tests	Raw	Typical mileage	All class 4	Difference
3	3,462	4.8%	5.4%	11.8%	−6.4 pts
4	3,925	4.3%	7.8%	13.2%	−5.5 pts
5	4,028	6.0%	7.2%	15.0%	−7.8 pts
6	4,231	5.6%	7.3%	17.5%	−10.2 pts
7	4,211	6.1%	9.1%	20.3%	−11.2 pts
8	4,257	6.4%	10.1%	23.7%	−13.6 pts
9	4,356	6.9%	11.1%	27.3%	−16.2 pts
10	3,701	8.0%	10.7%	30.0%	−19.3 pts
11	3,156	8.5%	10.4%	32.9%	−22.5 pts
12	2,493	9.9%	15.1%	35.9%	−20.8 pts
13	2,133	10.9%	16.1%	38.8%	−22.7 pts
14	2,650	13.7%	16.2%	40.7%	−24.6 pts
15	3,578	18.3%	23.8%	42.1%	−18.3 pts
16	4,566	19.6%	23.5%	43.1%	−19.5 pts
17	3,980	21.6%	25.8%	43.3%	−17.4 pts
18	3,053	20.8%	23.1%	43.2%	−20.1 pts
19*	1,614	20.4%	23.4%	42.9%	−19.6 pts

* Over 18 years: only survivors are still tested at this age, so these rates describe the cars that are left.

Lower MOT fail rate than average: 19.6% raw · 23.5% at typical mileage, against 43.1% for all class 4 vehicles tested at 16, 4,566 MOT tests. Which years? See the full verdict

First-use year with fewer MOT fails than cars the same age: 2007 (raw rates, not adjusted for mileage; each against 5,742 or more MOT tests).

What fails on a Porsche Cayman at 16 years

4 of 11 parts fail clearly more or less often than on cars the same age, with the same direction at 3 or more ages up to 18 years and no mixed picture.

What failed at 16 years, per 100 MOT tests (4,566 MOT tests), against all class 4 vehicles tested at 16. A test that fails on two parts counts for both.
Part	Per 100	All class 4	Compared	Most common fail
Lights and electrics	7.9	20.4	fails less often than cars the same age (0.4× (0.35–0.43×))	Position lamp not working (MOT fail)
Brakes	4.6	11.6	fails less often than cars the same age (0.3–0.5×)	Brake pipe excessively corroded (MOT fail)
Tyres	3.0	7.5	fails less often than cars the same age (0.3–0.5×)	Tyre tread depth below requirements of 1.6mm (MOT fail)
Suspension	4.3	17.1	fails less often than cars the same age (0.2–0.3×)	Coil spring fractured or broken (MOT fail)
Emissions and leaks	3.8	6.2	about average for cars the same age	Petrol exhaust Lambda reading after 2nd fast idle outside specified limits (MOT fail)
Visibility	1.9	6.8	about average for cars the same age	Windscreen wiper does not clear the windscreen effectively (MOT fail)

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Check one Porsche Cayman, not the average

The figures here describe Porsche Cayman cars as a group. A registration shows one car's own DVSA record: its MOT tests, the mileage at each test and the recall flag.

Check a Porsche Cayman's MOT history Every MOT test, fail item, advisory and mileage reading DVSA holds for that registration.
Mileage check on a Porsche Cayman The odometer reading from each MOT, with drops, jumps and long gaps flagged.
Check a Porsche Cayman for an outstanding recall Whether DVSA's MOT record flags an outstanding safety recall for that registration.

More Porsche Cayman data

Porsche Cayman recalls

6 DVSA recalls list this model by name [2]. Vehicles are DVSA's count of affected Porsche Cayman vehicles. The latest:

R/2024/001 Also covers the Porsche Cayman: On affected vehicles the rear spoiler setting may not meet specifications due to incorrect coding during production making it too high. The high-mounted brake light may become less visible while driving and the aerodynamics of the vehicle may change. (45 vehicles of this model), built Jun 2023 to Oct 2023. From the recall's stated risk: “On affected vehicles the rear spoiler setting may not meet specifications due to incorrect coding during production making it too high.”
R/2021/314 Also covers the Porsche Cayman: Rear axle carrier side parts may not meet required specifications (1,854 vehicles of this model), built Jan 2014 to Jul 2014. From the recall's stated risk: “The carrier side parts installed on the rear axle during a certain period may not meet the required specifications.”
R/2019/250 Also covers the Porsche Cayman: Air bag control unit may have been installed with a faulty capacitor (1,810 vehicles of this model), built Jun 2015 to Jun 2016. From the recall's stated risk: “Possible fault within the air bag control unit.”

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Porsche Cayman against similar cars at 16 years

Same class and fuel, all tested at 16 years, at typical mileage.

Model	Fail rate	95% range	MOT tests
Porsche Cayman	23.5%	21.1% to 26.2%	4,566
Mazda MX-5 MOT fail rate	37.4%	36.3% to 38.5%	24,545
Audi TT MOT fail rate	32.7%	32.1% to 33.3%	24,476
Mercedes-Benz CLK MOT fail rate	39.6%	38.8% to 40.4%	13,481
Mercedes-Benz SLK MOT fail rate	37.1%	35.7% to 38.6%	13,133
BMW Z4 MOT fail rate	30.4%	29.1% to 31.7%	10,966
Porsche 911 MOT fail rate	18.9%	16.5% to 21.6%	8,838
Volkswagen Eos MOT fail rate	39.2%	38.1% to 40.3%	8,500
Jaguar XK MOT fail rate	28.3%	26.6% to 30.0%	7,484

Other Porsche models

More Porsche Cayman data

Years

Running costs

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By part

Problems, recalls and costs

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Questions people ask

How often does a Porsche Cayman fail its MOT at 16 years?

23.5% of MOT tests at 16 years ended in a fail at typical mileage (19.6% as tested), from 4,566 MOT tests, against 43.1% for all class 4 vehicles the same age; the Mazda MX-5 was at 37.4%.

What fails most on a Porsche Cayman at 16 years?

7.9 in 100 MOT tests at 16 years failed on lights and electrics, most often "position lamp not working", then brakes (4.6) and tyres (3.0), from 4,566 MOT tests.

How does the Porsche Cayman compare with the Mazda MX-5?

At 16 years the Porsche Cayman failed 23.5% of MOT tests at typical mileage, the Mazda MX-5 37.4% and the Audi TT 32.7%, from 4,566, 24,545 and 24,476 MOT tests.

What mileage does a Porsche Cayman have at 16 years?

A median of 72,090 miles at the MOT test at 16 years, against 102,757 for all class 4 vehicles the same age, from 4,566 MOT tests.

Sources

Driver and Vehicle Standards Agency, Anonymised MOT tests and results, 2022 to 2025. DVSA MOT data, Open Government Licence v3.0, 59,394 MOT tests. Accessed 7 Oct 2026.
Driver and Vehicle Standards Agency, Vehicle safety recalls data. DVSA recall data. Accessed 7 Oct 2026.

Cars tested at 16 years are compared only with vehicles tested at 16 years in the same year, adjusted to typical mileage. Breakdowns and non-MOT faults are not in this data.