2025 MOT results
Porsche Macan common problems
The most common reason a Porsche Macan fails its MOT is a split joint boot, on 14.4% of its 3,246 failed tests in 2025. Against other cars of the same age, 6 faults stand out, the widest gaps being: a split joint boot at 14.4% of failures against 2.4% expected; a non-standard number plate at 3.6% of failures against 0.7% expected; a braking fault at 4.0% of failures against 0.9% expected.
- Tests in 2025 34,965 Cars aged three and over
- Failed first time 9.3% 3,246 tests
- Found a dangerous defect 2.7% Unsafe to drive away
- Ended with an advisory 27.6% A problem to watch, not a failure
What fails a Porsche Macan MOT
Each bar is the share of failed Porsche Macan 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 |
|---|---|
| Drive shafts: constant velocity boot split or insecure, no longer prevents the ingress of dirt Body, chassis, structure | 14.4% |
| Tyres: cut in excess of the requirements deep enough to reach the ply or cords Tyres | 14.0% |
| Tyres: tread depth below requirements of 1.6mm Tyres | 13.3% |
| Tyres: ply or cords exposed Tyres | 6.8% |
| Headlamp aim: too high Lamps, reflectors and electrical equipment | 6.3% |
| Headlamp aim: too low Lamps, reflectors and electrical equipment | 4.9% |
| Tyres: bulge, caused by separation or partial failure of its structure Tyres | 4.1% |
| Brake pads: worn down to wear indicator Brakes | 4.0% |
| Suspension arms: pin or bush excessively worn Suspension | 3.7% |
| Registration plates: does not conform to the specified requirements Identification of the vehicle | 3.6% |
| Tyre pressure monitoring system: malfunctioning or obviously inoperative Tyres | 3.3% |
| Wipers: does not clear the windscreen effectively Visibility | 3.3% |
Source:DVSA,UK Motoring analysis 2025 Updated
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Split joint boot
14.4% of failures 2.4% expected 6 times as often
A split rubber boot on a joint or driveshaft. The joint may still be sound, but dirt and water get in once the boot is open.
Turn the wheels to full lock and look behind them for greasy splits in the rubber concertina.
-
Cut tyre
14.0% of failures 8.8% expected 1.6 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.
-
Tyre worn below the legal limit
13.3% of failures 9.9% expected somewhat more often
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
6.8% of failures 6.1% expected about as expected
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.
-
Headlamp aim set too high
6.3% of failures 3.4% expected 1.9 times as often
The dipped beam points higher than it should, which dazzles oncoming drivers.
Nothing to do at the roadside, but a garage resets the aim in minutes; a sagging suspension corner or a heavy boot load can throw it out.
-
Headlamp aim set too low
4.9% of failures 4.1% expected somewhat more often
The dipped beam points lower than it should, so it lights too little of the road.
Nothing to do at the roadside, but a garage resets the aim in minutes; a sagging suspension corner or a heavy boot load can throw it out.
Which parts of the car fail
Tyres is the area that most often fails a Porsche Macan, on 40.7% of failed tests. The widest gap against cars of the same registration years is body, chassis, structure, on 15.4% against 5.2% expected.
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 | 40.7% |
| Lamps, reflectors and electrical equipment | 21.3% |
| Body, chassis, structure | 15.4% |
| Brakes | 11.1% |
| Visibility | 10.1% |
| Suspension | 8.7% |
| Identification of the vehicle | 4.4% |
| Noise, emissions and leaks | 4.1% |
Source:DVSA,UK Motoring analysis 2025 Updated
What testers warn about
27.6% of Porsche Macan tests ended with at least one advisory: a fault the tester found that did not fail the test. On Porsche Macans, 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 | 13.7% |
| Brake pads: wearing thin Brakes | 4.6% |
| Suspension arms: pin or bush worn but not resulting in excessive movement Suspension | 3.2% |
| Tyres: slightly damaged or cracking or perishing Tyres | 2.4% |
| Brake discs: worn, pitted or scored, but not seriously weakened Brakes | 2.0% |
| Nail in tyre Non-component advisories | 2.0% |
| Tyres: cut but not deep enough to reach the ply or cords Tyres | 1.8% |
| Child seat fitted not allowing full inspection of adult belt Non-component advisories | 1.8% |
| Brake discs: worn, but not excessively Brakes | 1.3% |
| Coil spring: corroded Suspension | 1.0% |
| Engine oil leak, but not excessive Noise, emissions and leaks | 0.9% |
| Tyres: slightly damaged Tyres | 0.8% |
Source:DVSA,UK Motoring analysis 2025 Updated
What changes as a Porsche Macan gets older
A 2022 Porsche Macan failed 6.3% of its MOT tests in 2025; a 2015 one failed 15.1%. What fails changes as much as how often, and these are the two years themselves rather than an average across them.
2022 Porsche Macan 6.3% failed, from 4,713 tests
- Tyre worn below the legal limit 23.6%
- Cut tyre 21.5%
- Headlamp aim set too high 10.8%
- Bulge in a tyre 8.8%
- Tyre worn through to the cords 6.1%
- Non-standard number plate 5.1%
2015 Porsche Macan 15.1% failed, from 3,638 tests
- Split joint boot 33.4%
- Tyre worn below the legal limit 7.8%
- Cut tyre 6.6%
- Worn suspension bushes 6.0%
- Headlamp out 5.7%
- Engine management light on 5.5%
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 Macan problems: common questions
What is the most common problem with a Porsche Macan?
Of the faults that fail an MOT, “Drive shafts: constant velocity boot split or insecure, no longer prevents the ingress of dirt” is the most common: it appears on 14.4% of failed Porsche Macan tests. Across categories, tyres is the area that most often fails one, on 40.7% of failed tests.
How often does a Porsche Macan fail its MOT?
9.3% of Porsche Macan tests in 2025 were not passed first time, from 34,965 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 76 out of 100, where 50 is as expected.
Does anything fail more often on a Porsche Macan than on other cars?
Yes. “Drive shafts: constant velocity boot split or insecure, no longer prevents the ingress of dirt” appears on 14.4% of its failures against 2.4% for cars of the same age, and “Registration plates: does not conform to the specified requirements” appears on 3.6% of its failures against 0.7% 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 Macan 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 | 34,965 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.