Porsche 928 MOT pass rate
82.3% of 1,898 Porsche 928 MOT tests pass.
The 928 passes 82.3% of the time, noticeably below the figure for the average across all Porsche models (91.8%).
The Porsche 928 has a pass rate of 82.3%, a little higher than the national average for cars (79.2%).
Own this Porsche 928?
This is the average across every Porsche 928 in the dataset. Look up your own registration for its actual MOT history, and a free place to keep its maintenance records.
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Pass rate by vehicle age
| Vehicle age | Pass rate | Tests | Average mileage |
|---|---|---|---|
| 0–3 years | no tests recorded | 0 | no reading |
| 3–6 years | no tests recorded | 0 | no reading |
| 6–10 years | no tests recorded | 0 | no reading |
| 10–15 years | no tests recorded | 0 | no reading |
| 15+ years | 82.3% | 1,898 | 107,400 miles |
Common MOT failure reasons for the Porsche 928
The most common reason the Porsche 928 fails its MOT is lamps, reflectors and electrical equipment — present in 76.3% of failed tests, most often logged as "Not working".
| Category | Share of failed tests | Example |
|---|---|---|
| Lamps, reflectors and electrical equipment | 76.3% | Not working |
| Brakes | 24.7% | Bulging under pressure |
| Visibility | 21.1% | Provides insufficient washer liquid |
| Noise, emissions and leaks | 18.3% | Emissions carbon monoxide content excessive |
| Body, chassis, structure | 18.0% | Constant velocity boot split or insecure, no longer prevents the ingress of dirt |
| Steering | 17.0% | Gaiter missing or no longer prevents the ingress of dirt |
| Suspension | 13.1% | Prescribed area excessively corroded significantly reducing structural strength |
| Seat belts and supplementary restraint systems | 5.7% | Prescribed area strength or continuity significantly reduced |
| Identification of the vehicle | 2.3% | Does not conform to the specified requirements |
| Tyres | 2.1% | Tread depth below requirements of 1.6mm |
Related Porsche models
- Porsche 944 — 80.5% pass rate
- Porsche 911 Carrera — 95.9% pass rate
- Porsche 718 Cayman — 98.2% pass rate
- Porsche 924 — 78.1% pass rate
- Porsche Carrera — 87.0% pass rate
- Porsche 968 — 86.7% pass rate
Frequently asked questions
- What is the MOT pass rate for the Porsche 928?
- 82.3% of Porsche 928 MOT tests pass, based on 1,898 tests in the DVSA anonymised MOT tests and results dataset.
- What are the most common MOT failures for the Porsche 928?
- The most common reason the Porsche 928 fails its MOT is lamps, reflectors and electrical equipment — present in 76.3% of failed tests, most often logged as "Not working".
- Does this show the Porsche 928's service history?
- No — this is MOT test data, which covers roadworthiness, not servicing. A service history is a separate record of maintenance work, which a specific car only has if its owner has kept it. See the Porsche service history guide for how to check and keep one.