2018 Porsche Cayenne · 8,464 MOT tests
2018 Porsche Cayenne reliability
2018 Porsche Cayennes fail 9.6% of first MOT tests, 42% fewer MOT fails than the average car its age and mileage, ranking 16 of 19 Cayenne years (8,464 DVSA tests, 2022 to 2024).
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- first-time fail rate (all Porsche Cayennes: 13.8%)
- 9.6%
- first-time fail rate (all Porsche Cayennes: 13.8%)
- fails than cars of the same age and mileage
- 42% fewer
- fails than cars of the same age and mileage
- typical miles at its MOT, aged about 5
- 44,003
- typical miles at its MOT, aged about 5
- MOT tests, 2022 to 2024
- 8,464
- MOT tests, 2022 to 2024
Year on year
2018 against the years either side
- 2017 cars: 43% fewer MOT fails than the average car its age (the 2018 car does worse)
- 2019 cars: 61% fewer MOT fails than the average car its age (the 2018 car does worse)
- Strong point: lights and electrics, 73% fewer fails than comparable cars.
- Plates: a 2018 car carries a 67 plate (January–February 2018), or a 18 plate (March–August 2018), or a 68 plate (September–December 2018).
Common problems
What fails on a 2018 Porsche Cayenne
Fail rate by area
- Tyres4.2%
- Suspension1.4%
- Windscreen, wipers and mirrors1.2%
- Lights and electrics1.1%
- Brakes1.1%
- Exhaust, emissions and leaks0.9%
- Number plates and VIN0.7%
Average for cars of the same age and mileage
Top failures
Tyre cut reaching ply or cords 1.23%
A cut reaching the ply or cords weakens the tyre and can cause a burst, so it must be replaced.
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.
Tyre ply or cords exposed 0.71%
Exposed ply or cords can let the tyre fail suddenly, so the tyre must be replaced before the car is driven.
Tyre tread below 1.6mm 0.54%
Tread below 1.6mm is illegal and reduces grip in wet conditions, so the tyre must be replaced.
Tyre bulge from structural failure 0.53%
A bulge means the tyre's structure has failed and it could burst suddenly, so it must be replaced at once.
Wiper blade not clearing windscreen 0.5%
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 (6.68%) · Brake pads wearing thin (5.42%) · Tyre slightly damaged or cracking (2.53%) · Child seat limits belt inspection (2.04%) · Tyre has a shallow cut (1.85%) · Nail in tyre, monitor (1.8%)
Other years
Every Porsche Cayenne year
The full picture: Porsche Cayenne reliability. Before you pay for any Porsche Cayenne, 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 2018 Porsche Cayenne reliable?
2018 Porsche Cayennes fail 9.6% of first MOT tests, 42% fewer MOT fails than the average car its age and mileage, ranking 16 of 19 Cayenne years (8,464 DVSA tests, 2022 to 2024).
What fails on a 2018 Porsche Cayenne MOT?
Most often tyre cut reaching ply or cords (1.23% of tests), coil spring fractured or broken (0.74% of tests), tyre ply or cords exposed (0.71% of tests).
How many miles should a 2018 Porsche Cayenne have done?
At its MOT aged about 5, a typical 2018 Porsche Cayenne shows 44,003 miles. Much higher or lower is worth asking about.
What plate is a 2018 car?
A car first registered in 2018 carries a 67 plate (January–February 2018), or a 18 plate (March–August 2018), or a 68 plate (September–December 2018).
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