2005 Porsche 911 · 10,113 MOT tests
2005 Porsche 911 reliability
2005 Porsche 911s fail 14.2% of first MOT tests, 63% fewer MOT fails than the average car its age and mileage, ranking 13 of 25 911 years (10,113 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Porsche 911s: 10.4%)
- 14.2%
- first-time fail rate (all Porsche 911s: 10.4%)
- fails than cars of the same age and mileage
- 63% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 18
- 69,583
- typical miles at its MOT, aged about 18
- MOT tests, 2022 to 2024
- 10,113
- MOT tests, 2022 to 2024
Year on year
2005 against the years either side
- 2004 cars: 59% fewer MOT fails than the average car its age (the 2005 car does better)
- 2006 cars: 64% fewer MOT fails than the average car its age (the 2005 car does worse)
- Strong point: suspension, 84% fewer fails than comparable cars.
- Plates: a 2005 car carries a 54 plate (January–February 2005), or a 05 plate (March–August 2005), or a 55 plate (September–December 2005).
Common problems
What fails on a 2005 Porsche 911
Fail rate by area
- Lights and electrics5%
- Exhaust, emissions and leaks3.6%
- Brakes2.6%
- Tyres2.5%
- Suspension2.2%
- Body, chassis and structure1.4%
- Windscreen, wipers and mirrors1.2%
Average for cars of the same age and mileage
Top failures
Lambda reading outside specified limits 1.83%
An out-of-range lambda reading suggests poor fuel mixture or a failing catalytic converter, so diagnosis is needed.
Headlamp aim set too high 1.39%
Headlamps aimed too high can dazzle other drivers, and adjusting them is usually a quick job.
Rigid brake pipe excessively corroded 0.9%
Badly corroded brake pipes can leak or fail, which can cause a loss of braking, so repair is urgent.
Tyre ply or cords exposed 0.86%
Exposed ply or cords can let the tyre fail suddenly, so the tyre must be replaced before the car is driven.
Coil spring fractured or broken 0.74%
A broken coil spring can leave the car sitting low or unstable, so it must be replaced before driving.
Position lamp not working 0.72%
A failed position lamp makes the car harder to see in poor light and is illegal, so it must be repaired.
Common advisories
Brake pipes corroded and greasy (8.9%) · Brake disc pitted or scored (7.3%) · Tyre worn close to legal limit (7.06%) · Tyre slightly damaged or cracking (3.99%) · Engine oil leak, not excessive (2.24%) · Slight play in steering rack joints (1.47%)
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 2005 Porsche 911 reliable?
2005 Porsche 911s fail 14.2% of first MOT tests, 63% fewer MOT fails than the average car its age and mileage, ranking 13 of 25 911 years (10,113 DVSA tests, 2022 to 2024).
What fails on a 2005 Porsche 911 MOT?
Most often lambda reading outside specified limits (1.83% of tests), headlamp aim set too high (1.39% of tests), rigid brake pipe excessively corroded (0.9% of tests).
How many miles should a 2005 Porsche 911 have done?
At its MOT aged about 18, a typical 2005 Porsche 911 shows 69,583 miles. Much higher or lower is worth asking about.
What plate is a 2005 car?
A car first registered in 2005 carries a 54 plate (January–February 2005), or a 05 plate (March–August 2005), or a 55 plate (September–December 2005).
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