2008 Porsche Cayman · 3,735 MOT tests
2008 Porsche Cayman reliability
2008 Porsche Caymans fail 17.1% of first MOT tests, 54% fewer MOT fails than the average car its age and mileage, ranking 12 of 15 Cayman years (3,735 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Porsche Caymans: 9.8%)
- 17.1%
- first-time fail rate (all Porsche Caymans: 9.8%)
- fails than cars of the same age and mileage
- 54% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 15
- 69,530
- typical miles at its MOT, aged about 15
- MOT tests, 2022 to 2024
- 3,735
- MOT tests, 2022 to 2024
Year on year
2008 against the years either side
- 2007 cars: 52% fewer MOT fails than the average car its age (the 2008 car does better)
- 2009 cars: 71% fewer MOT fails than the average car its age (the 2008 car does worse)
- Strong point: body, chassis and structure, 76% fewer fails than comparable cars.
- Plates: a 2008 car carries a 57 plate (January–February 2008), or a 08 plate (March–August 2008), or a 58 plate (September–December 2008).
Common problems
What fails on a 2008 Porsche Cayman
Fail rate by area
- Lights and electrics8.2%
- Brakes4.1%
- Suspension3.7%
- Tyres3.1%
- Exhaust, emissions and leaks2.5%
- Windscreen, wipers and mirrors1.8%
- Body, chassis and structure1.4%
Average for cars of the same age and mileage
Top failures
Position lamp not working 3.32%
A failed position lamp makes the car harder to see in poor light and is illegal, so it must be repaired.
Lambda reading outside specified limits 1.26%
An out-of-range lambda reading suggests poor fuel mixture or a failing catalytic converter, so diagnosis is needed.
Wiper blade not clearing windscreen 1.2%
Wipers that do not clear the windscreen reduce visibility in rain, which is a safety risk, so replace them.
Rigid brake pipe excessively corroded 1.18%
Badly corroded brake pipes can leak or fail, which can cause a loss of braking, so repair is urgent.
Stop lamp not working 1.15%
A failed stop lamp means drivers behind cannot see when you brake, a safety risk that must be fixed.
Coil spring fractured or broken 1.12%
A broken coil spring can leave the car sitting low or unstable, so it must be replaced before driving.
Common advisories
Brake disc pitted or scored (8.57%) · Brake pipes corroded and greasy (8.54%) · Tyre worn close to legal limit (6.56%) · Tyre slightly damaged or cracking (5.3%) · Slight play in steering rack joints (4.15%) · Engine oil leak, not excessive (3%)
Other years
Every Porsche Cayman year
The full picture: Porsche Cayman reliability. Before you pay for any Porsche Cayman, a Full Check (£9.99) shows finance, stolen and write-off records the MOT can't.
Source: DVSA anonymised MOT results, 2022 to 2024, class 4 normal tests.
Is a 2008 Porsche Cayman reliable?
2008 Porsche Caymans fail 17.1% of first MOT tests, 54% fewer MOT fails than the average car its age and mileage, ranking 12 of 15 Cayman years (3,735 DVSA tests, 2022 to 2024).
What fails on a 2008 Porsche Cayman MOT?
Most often position lamp not working (3.32% of tests), lambda reading outside specified limits (1.26% of tests), wiper blade not clearing windscreen (1.2% of tests).
How many miles should a 2008 Porsche Cayman have done?
At its MOT aged about 15, a typical 2008 Porsche Cayman shows 69,530 miles. Much higher or lower is worth asking about.
What plate is a 2008 car?
A car first registered in 2008 carries a 57 plate (January–February 2008), or a 08 plate (March–August 2008), or a 58 plate (September–December 2008).
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