2018 Porsche Cayenne: common problems and what to check
What gets flagged at MOT on 2018 Porsche Cayennes, from 1,835 tests in 2025, plus known faults and what to look at before you buy one.
What gets flagged at MOT
The share of 2018 Porsche Cayenne MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.
- Tyres21% of testsRough price £70–£150
At the viewing: Check the tread on all four tyres, including the inside edges, and look for cracks or bulges.
- Brakes13% of testsRough price £150–£350
At the viewing: Look for a lip on the disc edges and feel for judder or pulling when braking firmly from about 40mph.
- Suspension5% of testsRough price £120–£400
At the viewing: Listen for knocks over speed bumps, and look behind each front wheel for a snapped coil spring.
- Lights and electrics3% of testsRough price £10–£80
At the viewing: Ask a friend to check every light, including brake lights and indicators, while you operate them.
- Wipers, windscreen and mirrors3% of testsRough price £15–£250
At the viewing: Check for chips in the driver's view, and test the wipers and washers.
- Seats and seatbelts2% of testsRough price £80–£250
At the viewing: Pull each seatbelt sharply. It should lock, and retract cleanly.
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Other years
| Year | MOT tests | Most flagged |
|---|---|---|
| 2022 | 2,433 | Tyres 19% |
| 2021 | 1,577 | Tyres 20% |
| 2020 | 2,361 | Tyres 22% |
| 2019 | 3,228 | Tyres 22% |
| 2017 | 1,767 | Tyres 23% |
| 2016 | 2,790 | Tyres 22% |
| 2015 | 2,334 | Tyres 23% |
| 2014 | 1,857 | Tyres 25% |
| 2013 | 2,158 | Tyres 24% |
| 2012 | 1,915 | Tyres 24% |
| 2011 | 1,199 | Tyres 26% |
| 2010 | 856 | Tyres 25% |
| 2009 | 796 | Lights and electrics 27% |
| 2008 | 561 | Lights and electrics 26% |
| 2007 | 664 | Lights and electrics 30% |
| 2006 | 822 | Suspension 29% |
| 2005 | 1,188 | Lights and electrics 32% |
| 2004 | 944 | Lights and electrics 34% |
Where this comes from: the DVSA's anonymised results for every MOT test in Great Britain in 2025, counting tests of 2018 Porsche Cayennes registered in 2018. "Flagged" includes advisories, so it isn't the same as a fail rate. How we score