2008 Porsche 911 · 7,184 MOT tests
2008 Porsche 911 reliability
2008 Porsche 911s fail 11.7% of first MOT tests, 65% fewer MOT fails than the average car its age and mileage, ranking 10 of 25 911 years (7,184 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Porsche 911s: 10.4%)
- 11.7%
- first-time fail rate (all Porsche 911s: 10.4%)
- fails than cars of the same age and mileage
- 65% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 15
- 53,931
- typical miles at its MOT, aged about 15
- MOT tests, 2022 to 2024
- 7,184
- MOT tests, 2022 to 2024
Year on year
2008 against the years either side
- 2007 cars: 64% 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: suspension, 88% 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 911
Fail rate by area
- Lights and electrics3.5%
- Body, chassis and structure2.5%
- Tyres2.5%
- Windscreen, wipers and mirrors1.4%
- Suspension1.4%
- Brakes1.4%
- Exhaust, emissions and leaks1.4%
Average for cars of the same age and mileage
Top failures
CV joint boot split or insecure 1.38%
A split CV boot lets dirt in and grease out, so the joint wears and may need full replacement.
Headlamp aim set too high 1.16%
Headlamps aimed too high can dazzle other drivers, and adjusting them is usually a quick job.
Lambda reading outside specified limits 0.71%
An out-of-range lambda reading suggests poor fuel mixture or a failing catalytic converter, so diagnosis is needed.
Tyre ply or cords exposed 0.68%
Exposed ply or cords can let the tyre fail suddenly, so the tyre must be replaced before the car is driven.
Tyre cut reaching ply or cords 0.63%
A cut reaching the ply or cords weakens the tyre and can cause a burst, so it must be replaced.
Wiper blade not clearing windscreen 0.47%
Wipers that do not clear the windscreen reduce visibility in rain, which is a safety risk, so replace them.
Common advisories
Tyre worn close to legal limit (5.76%) · Brake disc pitted or scored (4.9%) · Brake pipes corroded and greasy (4.32%) · Tyre slightly damaged or cracking (3.58%) · Engine oil leak, not excessive (2.09%) · Suspension ball joint slight play (1.53%)
Other years
Every Porsche 911 year
The full picture: Porsche 911 reliability. Before you pay for any Porsche 911, 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 911 reliable?
2008 Porsche 911s fail 11.7% of first MOT tests, 65% fewer MOT fails than the average car its age and mileage, ranking 10 of 25 911 years (7,184 DVSA tests, 2022 to 2024).
What fails on a 2008 Porsche 911 MOT?
Most often cv joint boot split or insecure (1.38% of tests), headlamp aim set too high (1.16% of tests), lambda reading outside specified limits (0.71% of tests).
How many miles should a 2008 Porsche 911 have done?
At its MOT aged about 15, a typical 2008 Porsche 911 shows 53,931 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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