2025 MOT results
Porsche Cayenne common problems
The most common reason a Porsche Cayenne fails its MOT is a broken coil spring, on 14.1% of its 4,699 failed tests in 2025. Against other cars of the same age, 5 faults stand out, the widest gaps being: a bulge in a tyre at 4.0% of failures against 1.7% expected; a cut tyre at 11.1% of failures against 5.6% expected; the engine management light on at 9.4% of failures against 5.5% expected.
- Tests in 2025 31,730 Cars aged three and over
- Failed first time 14.8% 4,699 tests
- Found a dangerous defect 4.2% Unsafe to drive away
- Ended with an advisory 37.5% A problem to watch, not a failure
What fails a Porsche Cayenne MOT
Each bar is the share of failed Porsche Cayenne tests with that defect. Where we can compare it with cars of the same registration years, the marker shows what an average car of those ages records (12 of the 12 items below).
Most common reasons for failure
A test can fail for more than one defect, so shares add up to more than 100%.
| Defect | Share of failed tests |
|---|---|
| Coil spring: fractured or broken Suspension | 14.1% |
| Tyres: cut in excess of the requirements deep enough to reach the ply or cords Tyres | 11.1% |
| Malfunction indicator lamp: inoperative or indicates a malfunction Noise, emissions and leaks | 9.4% |
| Tyres: tread depth below requirements of 1.6mm Tyres | 8.6% |
| Tyres: ply or cords exposed Tyres | 6.9% |
| Wipers: does not clear the windscreen effectively Visibility | 5.3% |
| Brake pads: less than 1.5 mm thick Brakes | 5.1% |
| Headlamp: not working on dipped beam Lamps, reflectors and electrical equipment | 5.1% |
| Headlamp aim: too high Lamps, reflectors and electrical equipment | 4.7% |
| Position lamp: not working Lamps, reflectors and electrical equipment | 4.3% |
| Tyres: bulge, caused by separation or partial failure of its structure Tyres | 4.0% |
| Washers: provides insufficient washer liquid Visibility | 3.9% |
Source:DVSA,UK Motoring analysis 2025 Updated
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Broken coil spring
14.1% of failures 8.3% expected 1.7 times as often
A broken suspension spring, which usually snaps in the bottom coil and often fails on both sides within a year.
Look at each corner for a sagging ride height, and listen for a knock over speed bumps.
-
Cut tyre
11.1% of failures 5.6% expected 2 times as often
A cut in the tyre deep or long enough to reach the structure underneath, usually from a kerb or debris.
Run a hand round the inner and outer walls of each tyre, which is where kerbing shows.
-
Engine management light on
9.4% of failures 5.5% expected 1.7 times as often
The engine management light is on, or has been disconnected. Either fails the test.
A cheap code reader on the diagnostic socket will say what the car has stored before you pay for a test.
-
Tyre worn below the legal limit
8.6% of failures 8.3% expected about as expected
A tyre worn past the 1.6mm legal minimum across the middle three quarters of the tread.
A 20p coin in the main grooves: if the outer band of the coin is visible, the tyre is close to the limit.
-
Tyre worn through to the cords
6.9% of failures 5.1% expected somewhat more often
The tyre is worn or damaged far enough to expose the cords underneath, which is a dangerous defect.
Run a hand round the inner and outer walls of each tyre, which is where kerbing shows.
-
Wiper blades that do not clear the screen
5.3% of failures 7.0% expected somewhat less often
Wiper blades that leave the windscreen smeared or streaked across the area the driver looks through.
Look for split or hardened rubber, and lift each blade to see whether it still sits flat.
Which parts of the car fail
Tyres is the area that most often fails a Porsche Cayenne, on 32.9% of failed tests. That is also where it differs most from cars of the same registration years, which record 24.0%.
Failure categories
DVSA's own sections of the test. The marker is what cars of the same registration years record.
| Defect category | Share of failed tests |
|---|---|
| Tyres | 32.9% |
| Lamps, reflectors and electrical equipment | 29.4% |
| Suspension | 19.8% |
| Brakes | 17.3% |
| Visibility | 13.0% |
| Noise, emissions and leaks | 12.5% |
| Body, chassis, structure | 5.1% |
| Seat belts and supplementary restraint systems | 4.1% |
Source:DVSA,UK Motoring analysis 2025 Updated
What testers warn about
37.5% of Porsche Cayenne tests ended with at least one advisory: a fault the tester found that did not fail the test. On Porsche Cayennes, these are the items to ask about on a car you are viewing, because they are what the last tester expected to go next.
Most common advisories
Share of all tests, passes included.
| Advisory | Share of tests |
|---|---|
| Tread depth: worn close to legal limit or worn on edge Tyres | 14.5% |
| Brake pads: wearing thin Brakes | 8.5% |
| Engine oil leak, but not excessive Noise, emissions and leaks | 4.7% |
| Brake discs: worn, pitted or scored, but not seriously weakened Brakes | 4.2% |
| Tyres: slightly damaged or cracking or perishing Tyres | 3.7% |
| Tyres: cut but not deep enough to reach the ply or cords Tyres | 2.6% |
| Suspension arms: pin or bush worn but not resulting in excessive movement Suspension | 2.4% |
| Nail in tyre Non-component advisories | 2.2% |
| Brake discs: worn, but not excessively Brakes | 2.2% |
| Child seat fitted not allowing full inspection of adult belt Non-component advisories | 2.0% |
| Sub-frame: corroded but not seriously weakened Suspension | 1.6% |
| Suspension arm: corroded but not seriously weakened Suspension | 1.4% |
Source:DVSA,UK Motoring analysis 2025 Updated
What changes as a Porsche Cayenne gets older
A 2022 Porsche Cayenne failed 6.4% of its MOT tests in 2025; a 2013 one failed 16.6%. What fails changes as much as how often, and these are the two years themselves rather than an average across them.
2022 Porsche Cayenne 6.4% failed, from 2,414 tests
- Cut tyre 32.3%
- Tyre worn through to the cords 12.9%
- Bulge in a tyre 11.0%
- Tyre worn below the legal limit 11.0%
- Non-standard number plate 6.5%
2013 Porsche Cayenne 16.6% failed, from 2,150 tests
- Broken coil spring 25.5%
- Tyre worn below the legal limit 13.2%
- Cut tyre 9.2%
- Tyre worn through to the cords 8.1%
- Headlamp aim set too high 6.7%
- Wiper blades that do not clear the screen 6.7%
Shares are of each year's failed tests. Every MOT a particular car has had, with the defects and advisories written at each test, is on GOV.UK's MOT history service from the registration, free.
Porsche Cayenne problems: common questions
What is the most common problem with a Porsche Cayenne?
Of the faults that fail an MOT, “Coil spring: fractured or broken” is the most common: it appears on 14.1% of failed Porsche Cayenne tests. Across categories, tyres is the area that most often fails one, on 32.9% of failed tests.
How often does a Porsche Cayenne fail its MOT?
14.8% of Porsche Cayenne tests in 2025 were not passed first time, from 31,730 tests of cars aged three and over. Allowing for the age and mileage of the cars tested, that gives it a UK Motoring Reliability Score of 73 out of 100, where 50 is as expected.
Does anything fail more often on a Porsche Cayenne than on other cars?
Yes. “Tyres: bulge, caused by separation or partial failure of its structure” appears on 4.0% of its failures against 1.7% for cars of the same age, and “Tyres: cut in excess of the requirements deep enough to reach the ply or cords” appears on 11.1% of its failures against 5.6% for cars of the same age. Where an item is missing from the national figures for a year, we use the smallest share those figures show, so the comparison never overstates the difference.
Are these the same as breakdowns or known faults?
No. These are the items a tester recorded at the MOT, which covers condition and safety: lamps, brakes, tyres, suspension, corrosion and emissions. A gearbox that is unpleasant, an infotainment screen that has died, or a car that will not start on a cold morning are not part of the test, so they are not in these figures.
Where do the figures come from?
Every normal MOT test of a Porsche Cayenne aged three and over in Great Britain in 2025, from DVSA's anonymised MOT results. Retests are excluded, and the same fault on more than one wheel counts once.
Data stories to read next
Data sources and methodology
| Figures | Source | Period | Records | Updated |
|---|---|---|---|---|
| MOT defects and advisories | Anonymised MOT tests and results Driver and Vehicle Standards Agency Derived statistics UK Motoring | 2025 | 31,730 MOT tests | 19 September 2026 |
- Shares for defects are of failed tests; shares for advisories are of all tests. A test can carry several defects, so shares add to more than 100%.
- The expected share is what an average car of the same registration years records, weighted by where this model’s failures fall. Where an item is outside the national figures for a year, the smallest share those figures show is used in its place, which is an upper bound, so the comparison never overstates a model’s problems. No expectation is published where less than 80% of the model’s failures can be compared.
- Great Britain only: DVSA does not run MOT testing in Northern Ireland. Cars under three years old are not tested.
- The descriptions of what each part does are general and the same on every model. Every figure comes from the MOT data.
Contains public sector information licensed under the Open Government Licence v3.0.