Porsche 718 Cayman MOT pass rate and common problems
98.2% of 2,070 Porsche 718 Cayman MOT tests pass.
The 718 Cayman passes its MOT 98.2% of the time — well above the average across all Porsche models, which sits at 91.8%.
The Porsche 718 Cayman passes its MOT 98.2% of the time — well above the national average for cars, which sits at 79.2%.
Own this Porsche 718 Cayman?
This is the average across every Porsche 718 Cayman in the dataset. Look up your own registration for its actual MOT history, and a free place to keep its maintenance records.
Have service invoices? Upload and keep them with your car’s history →
How to check and keep your Porsche’s service history →
Pass rate by vehicle age
Pass rate stays relatively stable with age: 97.3% at 0–3 years versus 98.4% at 3–6 years.
| Vehicle age | Pass rate | Tests | Average mileage |
|---|---|---|---|
| 0–3 years | 97.3% | 478 | 10,126 miles |
| 3–6 years | 98.4% | 1,592 | 10,286 miles |
| 6–10 years | no tests recorded | 0 | no reading |
| 10–15 years | no tests recorded | 0 | no reading |
| 15+ years | no tests recorded | 0 | no reading |
Common MOT failure reasons for the Porsche 718 Cayman
The most common reason the Porsche 718 Cayman fails its MOT is tyres — present in 54.5% of failed tests, most often logged as "Has a cut in excess of the requirements deep enough to reach the ply or cords".
| Category | Share of failed tests | Example |
|---|---|---|
| Tyres | 54.5% | Has a cut in excess of the requirements deep enough to reach the ply or cords |
| Identification of the vehicle | 25.0% | Does not conform to the specified requirements |
| Brakes | 22.7% | Significantly and obviously worn |
| Road Wheels | 9.1% | Fractured |
| Lamps, reflectors and electrical equipment | 6.8% | Too high |
| Visibility | 4.5% | Provides insufficient washer liquid |
| Seat belts and supplementary restraint systems | 2.3% | Warning lamp indicates a fault |
| Noise, emissions and leaks | 2.3% | Missing where one was fitted as standard |
| Body, chassis, structure | 2.3% | Noise is clearly in excess of that emitted by a similar vehicle fitted with a standard silencer in average condition |
Buying a used Porsche 718 Cayman: what to check
These checks follow the Porsche 718 Cayman’s own MOT record: the areas it fails on most often, and how that changes as the car gets older. None of them replaces a mechanic’s inspection, but they tell you where to look first.
1. Tyres
Recorded in 54.5% of failed Porsche 718 Cayman MOTs.
Check tread depth across the whole width of every tyre, including the inner edge. Uneven wear can point to alignment or suspension problems. Look for cuts and bulges in the sidewalls.
2. Number plates and VIN
Recorded in 25.0% of failed Porsche 718 Cayman MOTs.
Match the registration plates and the VIN (usually at the base of the windscreen and on a door pillar) to the V5C.
3. Brakes
Recorded in 22.7% of failed Porsche 718 Cayman MOTs.
On the test drive, the car should stop straight without pulling or juddering, and the handbrake should hold it on a slope. Look through the wheels for scored or heavily lipped discs.
4. Wheels
Recorded in 9.1% of failed Porsche 718 Cayman MOTs.
Look for cracked or badly buckled wheels, and check wheel nuts or bolts are all present.
5. Lights and electrics
Recorded in 6.8% of failed Porsche 718 Cayman MOTs.
Walk round with the lights on: headlights (dipped and main), indicators, brake lights, fog light and number-plate lamp. Check the dashboard warning lights come on with the ignition, then go out once the engine starts.
Check the car’s own MOT history. Averages describe the model, not the car in front of you. Look up its registration for past failures, advisories that were never fixed, and gaps or dips in the recorded mileage.
Ask for the service history. Invoices show what was done and when; a stamp alone shows less. See how to check Porsche service history and what a service history check can tell you.
Related Porsche models
- Porsche Taycan — 94.5% pass rate
- Porsche 944 — 80.5% pass rate
- Porsche 911 Carrera — 95.9% pass rate
- Porsche 928 — 82.3% pass rate
- Porsche 924 — 78.1% pass rate
- Porsche Carrera — 87.0% pass rate
Frequently asked questions
- What is the MOT pass rate for the Porsche 718 Cayman?
- 98.2% of Porsche 718 Cayman MOT tests pass, based on 2,070 tests in the DVSA anonymised MOT tests and results dataset.
- What are the most common MOT failures for the Porsche 718 Cayman?
- The most common reason the Porsche 718 Cayman fails its MOT is tyres — present in 54.5% of failed tests, most often logged as "Has a cut in excess of the requirements deep enough to reach the ply or cords".
- What are the common problems with the Porsche 718 Cayman?
- Going by its MOT results, the most common problem areas on the Porsche 718 Cayman are tyres; number plates and vin; brakes.
- What should I check when buying a used Porsche 718 Cayman?
- Start with the areas it most often fails its MOT on: tyres; number plates and vin; brakes; wheels; lights and electrics. Then check the specific car's MOT history by registration for failures, advisories and mileage, and ask the seller for service invoices.
- Does this show the Porsche 718 Cayman'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.