2017 Porsche 911 · 9,645 MOT tests
2017 Porsche 911 reliability
2017 Porsche 911s fail 4.1% of first MOT tests, 70% fewer MOT fails than the average car its age and mileage, ranking 9 of 25 911 years (9,645 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Porsche 911s: 10.4%)
- 4.1%
- first-time fail rate (all Porsche 911s: 10.4%)
- fails than cars of the same age and mileage
- 70% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 6
- 22,327
- typical miles at its MOT, aged about 6
- MOT tests, 2022 to 2024
- 9,645
- MOT tests, 2022 to 2024
Year on year
2017 against the years either side
- 2016 cars: 71% fewer MOT fails than the average car its age (the 2017 car does worse)
- 2018 cars: 54% fewer MOT fails than the average car its age (the 2017 car does better)
- Strong point: tyres, 48% fewer fails than comparable cars.
- Plates: a 2017 car carries a 66 plate (January–February 2017), or a 17 plate (March–August 2017), or a 67 plate (September–December 2017).
Common problems
What fails on a 2017 Porsche 911
Fail rate by area
- Tyres2%
- Lights and electrics0.8%
- Number plates and VIN0.5%
- Windscreen, wipers and mirrors0.4%
- Suspension0.3%
- Brakes0.2%
- Body, chassis and structure0.1%
Average for cars of the same age and mileage
Top failures
Tyre ply or cords exposed 0.57%
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 0.57%
A cut reaching the ply or cords weakens the tyre and can cause a burst, so it must be replaced.
Tyre tread below 1.6mm 0.4%
Tread below 1.6mm is illegal and reduces grip in wet conditions, so the tyre must be replaced.
Headlamp aim set too high 0.29%
Headlamps aimed too high can dazzle other drivers, and adjusting them is usually a quick job.
Number plate does not meet standards 0.29%
The plate does not meet legal specifications, so it must be replaced with a compliant one before the car is driven.
Windscreen washer fluid insufficient 0.17%
Washers are not supplying enough liquid, so the windscreen cannot be cleared properly, which is a safety issue.
Common advisories
Tyre worn close to legal limit (4.76%) · Tyre slightly damaged or cracking (2.37%) · Nail in tyre, monitor (1.09%) · Tyre worn close to legal limit (0.84%) · Brake disc pitted or scored (0.65%) · Tyre has a shallow cut (0.58%)
Other years
Every Porsche 911 year
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Source: DVSA anonymised MOT results, 2022 to 2024, class 4 normal tests.
Is a 2017 Porsche 911 reliable?
2017 Porsche 911s fail 4.1% of first MOT tests, 70% fewer MOT fails than the average car its age and mileage, ranking 9 of 25 911 years (9,645 DVSA tests, 2022 to 2024).
What fails on a 2017 Porsche 911 MOT?
Most often tyre ply or cords exposed (0.57% of tests), tyre cut reaching ply or cords (0.57% of tests), tyre tread below 1.6mm (0.4% of tests).
How many miles should a 2017 Porsche 911 have done?
At its MOT aged about 6, a typical 2017 Porsche 911 shows 22,327 miles. Much higher or lower is worth asking about.
What plate is a 2017 car?
A car first registered in 2017 carries a 66 plate (January–February 2017), or a 17 plate (March–August 2017), or a 67 plate (September–December 2017).
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