What year Porsche 911 Carrera S is most reliable?

Based on MOT first-test pass rates, the 2021 Porsche 911 Carrera S has the highest pass rate at 98.6%, out of 186 vehicles tested.

What are the most common Porsche 911 Carrera S MOT failures?

The most common Porsche 911 Carrera S MOT failures vary by year. Check the individual year pages for detailed defect breakdowns — links in the table above.

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Porsche 911 Carrera S — Reliability by Year

186 vehicles · MOT data 2021–2021 · first-test pass rates

This page shows MOT first-test pass rates for each year the Porsche 911 Carrera S was manufactured — click any year to explore that cohort in detail. Trying to decide which year to buy? See the full buying guide →

Year	Pass rate	Avg mileage	Vehicles
2021	98.6%	12,742 mi	186

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