MOT performance
Porsche Cayenne diesel: MOT pass rate and common failures
Of 25,602 MOT tests on diesel Porsche Cayennes in 2023–2024 (on average 9.1 years old at test, median 81,919 miles), 83.3% passed first time, against 83.2% of 25,914 petrol Porsche Cayenne tests. Allowing for age, mileage and fuel, diesel Porsche Cayennes failed 44% less often than comparable cars — 0.56× against 0.56× for the Porsche Cayenne as a whole.
25,602 MOT tests on 12,948 vehicles, 2023–2024 · Source: DVSA (Open Government Licence) · Analysis: 73 Auto
Check a specific car's MOT history and running costsAt a glance
| Figure | Value | Basis |
|---|---|---|
| First-time pass rate | 83.3% | ±0.5 pts (95%), n = 25,602 |
| All Porsche Cayennes | 84.2% | n = 59,466 |
| Failures vs similar cars | 0.56× | same age, mileage and fuel = 1.00; Porsche Cayenne overall 0.56× |
| Tests with a dangerous defect | 5.3% | n = 25,602 |
| Average age at test | 9.1 years | n = 25,602 |
| Registration years covered | 2003–2018 | DVSA first-use date |
Diesel against the other Porsche Cayenne fuels
Official DVSA test results by fuel, with 73 Auto's adjusted ratio (failures against cars of the same age, mileage and fuel). The diesel cars were tested 1.5 years younger on average than the petrol ones, so the raw pass rates partly reflect age; the adjusted column doesn't.
| Fuel | Tests | Average age | First-time pass | vs similar cars | Dangerous |
|---|---|---|---|---|---|
| Petrol | 25,914 | 10.6 yrs | 83.2% | -46% | 4.5% |
| Diesel | 25,602 | 9.1 yrs | 83.3% | -44% | 5.3% |
| Hybrid | 7,452 | 4.7 yrs | 90.0% | -27% | 3.6% |
Where diesel Porsche Cayennes differ
- Steering: diesel Porsche Cayennes failed 67% less often than the Porsche Cayenne overall, relative to comparable cars (0.06× vs 0.17×).
- Seat belts and airbags: diesel Porsche Cayennes failed 37% less often than the Porsche Cayenne overall, relative to comparable cars (0.47× vs 0.75×).
- Body, chassis and structure: diesel Porsche Cayennes failed 34% less often than the Porsche Cayenne overall, relative to comparable cars (0.17× vs 0.26×).
- Suspension: diesel Porsche Cayennes failed 27% more often than the Porsche Cayenne overall, relative to comparable cars (0.43× vs 0.34×).
| Area | Diesel (vs similar) | All Porsche Cayennes (vs similar) |
|---|---|---|
| Tyres | 5.6% (-23%) | 5.2% (-22%) |
| Suspension | 4.1% (-57%) | 2.9% (-66%) |
| Lights, reflectors and electrical | 3.7% (-66%) | 4.8% (-57%) |
| Brakes | 2.5% (-65%) | 2.6% (-61%) |
| Driver's view of the road | 2.4% (-43%) | 2.3% (-51%) |
| Noise, emissions and leaks | 1.5% (-43%) | 1.8% (-47%) |
| Registration plates and VIN | 0.7% (+108%) | 0.7% (+90%) |
| Road wheels | 0.6% (+19%) | 0.4% (+4%) |
| Body, chassis and structure | 0.5% (-83%) | 0.9% (-74%) |
| Seat belts and airbags | 0.4% (-53%) | 0.8% (-25%) |
Most common diesel Porsche Cayenne failure items
| Item | Area | Share of tests |
|---|---|---|
| Coil spring: fractured or broken | Suspension | 3.62% |
| Tread depth: tread depth below requirements of 1.6mm | Tyres | 1.91% |
| Condition: has a cut in excess of the requirements deep enough to reach the ply or cords | Tyres | 1.54% |
| Condition: has ply or cords exposed | Tyres | 1.12% |
| Brake pads: less than 1.5 mm thick | Brakes | 1.04% |
Pass rate by age, by fuel
| Age at test (years) | diesel pass rate (tests) | petrol pass rate (tests) |
|---|---|---|
| 3-4 | — | 93.6% (6,559) |
| 5-6 | 85.4% (3,853) | 90.8% (3,090) |
| 7-8 | 85.6% (7,242) | 87.8% (1,048) |
| 9-10 | 82.9% (7,153) | 86.2% (1,059) |
| 11-12 | 81.4% (4,954) | 85.4% (1,105) |
| 13-15 | 77.0% (2,207) | 78.8% (2,286) |
| 16+ | — | 72.0% (9,409) |
Porsche Cayenne by registration year
Registration-year pages cover every fuel of that year.
- 2004 Porsche Cayenne · 70.5%
- 2005 Porsche Cayenne · 72.7%
- 2011 Porsche Cayenne · 82.6%
- 2012 Porsche Cayenne · 81.2%
- 2013 Porsche Cayenne · 82.6%
- 2014 Porsche Cayenne · 84.0%
- 2015 Porsche Cayenne · 86.3%
- 2016 Porsche Cayenne · 85.8%
- 2017 Porsche Cayenne · 87.1%
- 2018 Porsche Cayenne · 88.4%
- 2019 Porsche Cayenne · 93.3%
- 2020 Porsche Cayenne · 93.4%
What this does and doesn't tell you
Fuel is DVSA's recorded fuel type; plug-in and self-charging hybrids are grouped as hybrid. A difference between fuels can come from the engines themselves, or from how the cars are used — diesels typically cover more miles, and the adjusted ratio allows for mileage band but not for every difference in use. For one car, its own MOT history is the better guide: see MOT check.
Check a specific diesel Porsche Cayenne
Enter a UK registration to see that car's own MOT history and what it is likely to cost to own. Your first check is free and shows the vehicle summary and its headline ownership cost. The category-by-category breakdown is part of a paid check.
UK number plate or 17-character VIN
About this data. These are MOT test results, not a measure of mechanical reliability: a car's MOT outcome reflects its condition on the day, which depends on how it has been maintained and driven as well as how it was built. Figures cover class 4 vehicles (cars and light vans), normal tests only (retests excluded), outcomes pass, fail and pass after rectification at the station; vehicles at least 2.5 years old at test. Tests from 2023-01-01 to 2024-12-30. “Compared with similar cars” means compared with the national rate for cars of the same age, mileage band and fuel. Contains public sector information licensed under the Open Government Licence v3.0. Makes and models are matched to 73 Auto's vehicle catalogue; tests that can't be matched are left out rather than guessed. See how the MOT figures are produced.