2011 Porsche 911 · 4,867 MOT tests
2011 Porsche 911 reliability
2011 Porsche 911s fail 6.5% of first MOT tests, 75% fewer MOT fails than the average car its age and mileage, ranking 3 of 25 911 years (4,867 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Porsche 911s: 10.4%)
- 6.5%
- first-time fail rate (all Porsche 911s: 10.4%)
- fails than cars of the same age and mileage
- 75% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 12
- 40,688
- typical miles at its MOT, aged about 12
- MOT tests, 2022 to 2024
- 4,867
- MOT tests, 2022 to 2024
Year on year
2011 against the years either side
- 2010 cars: 71% fewer MOT fails than the average car its age (the 2011 car does better)
- 2012 cars: 73% fewer MOT fails than the average car its age (the 2011 car does better)
- Strong point: lights and electrics, 78% fewer fails than comparable cars.
- Plates: a 2011 car carries a 60 plate (January–February 2011), or a 11 plate (March–August 2011), or a 61 plate (September–December 2011).
Common problems
What fails on a 2011 Porsche 911
Fail rate by area
- Lights and electrics2.1%
- Tyres1.8%
- Body, chassis and structure0.9%
- Suspension0.7%
- Brakes0.7%
- Exhaust, emissions and leaks0.5%
- Windscreen, wipers and mirrors0.4%
Average for cars of the same age and mileage
Top failures
Headlamp aim set too high 0.7%
Headlamps aimed too high can dazzle other drivers, and adjusting them is usually a quick job.
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.
CV joint boot split or insecure 0.68%
A split CV boot lets dirt in and grease out, so the joint wears and may need full replacement.
Tyre cut reaching ply or cords 0.6%
A cut reaching the ply or cords weakens the tyre and can cause a burst, so it must be replaced.
Rigid brake pipe excessively corroded 0.25%
Badly corroded brake pipes can leak or fail, which can cause a loss of braking, so repair is urgent.
Lambda reading outside specified limits 0.25%
An out-of-range lambda reading suggests poor fuel mixture or a failing catalytic converter, so diagnosis is needed.
Common advisories
Tyre worn close to legal limit (5.22%) · Brake disc pitted or scored (3.14%) · Tyre slightly damaged or cracking (2.94%) · Brake pipes corroded and greasy (1.95%) · Suspension ball joint slight play (1.4%) · Shock absorber light oil misting (1.17%)
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 2011 Porsche 911 reliable?
2011 Porsche 911s fail 6.5% of first MOT tests, 75% fewer MOT fails than the average car its age and mileage, ranking 3 of 25 911 years (4,867 DVSA tests, 2022 to 2024).
What fails on a 2011 Porsche 911 MOT?
Most often headlamp aim set too high (0.7% of tests), tyre ply or cords exposed (0.68% of tests), cv joint boot split or insecure (0.68% of tests).
How many miles should a 2011 Porsche 911 have done?
At its MOT aged about 12, a typical 2011 Porsche 911 shows 40,688 miles. Much higher or lower is worth asking about.
What plate is a 2011 car?
A car first registered in 2011 carries a 60 plate (January–February 2011), or a 11 plate (March–August 2011), or a 61 plate (September–December 2011).
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