Porsche 911 vs Porsche 911 carrera 2 s: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Porsche 911
85%
MOT pass rate · 74,656 vehicles
Porsche 911 carrera 2 s
90%
MOT pass rate · 195 vehicles
More reliable
Verdict: On MOT pass rate, the Porsche 911 carrera 2 s is the more reliable of the two — 90% pass first time versus 85%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Porsche 911 | Porsche 911 carrera 2 s |
|---|---|---|
| MOT pass rate | 85% | 90% ✓ |
| MOT failure rate | 15% | 10% ✓ |
| Faults & advisories per test | 1.1 | 0.4 ✓ |
| Dangerous-fault share | 1% | 0% ✓ |
| Average mileage | 70,982 mi | 58,729 mi |
| Sample size (vehicles) | 74,656 | 195 |
Most common faults
Porsche 911
- Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
- Offside Rear Tyre worn close to the legal limit (4.1.E.1)
- Under-trays fitted obscuring some underside components
- Nearside Front Tyre worn close to the legal limit (4.1.E.1)
- Offside Front Tyre worn close to the legal limit (4.1.E.1)
- Oil leak, but not excessive (8.4.1 (a) (i))
Porsche 911 carrera 2 s
- Under-trays fitted obscuring some underside components
- Offside Rear Tyre worn close to the legal limit (4.1.E.1)
- Offside Front Brake pipe corroded, covered in grease or other material (1.1.11 (c))
- Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
- Nearside Front Brake pipe corroded, covered in grease or other material (1.1.11 (c))
- Engine covers fitted obscuring some components in the engine bay
Reliability FAQ
On MOT pass rate, the Porsche 911 carrera 2 s is the more reliable of the two — 90% pass first time versus 85%. It's one signal among several; check the full breakdown below.
Full Porsche 911 report Full Porsche 911 carrera 2 s report Most reliable cars
Pass rates are computed over completed (pass/fail) MOT tests. Reliability also depends on age, mileage and upkeep — see each model's page for the full picture.