What year Proton Prism is most reliable?

Based on MOT first-test pass rates, the 1990 Proton Prism has the highest pass rate at 60.0%, out of 314 vehicles tested.

What are the most common Proton Prism MOT failures?

The most common Proton Prism MOT failures vary by year. Check the individual year pages for detailed defect breakdowns — links in the table above.

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Proton Prism — Reliability by Year

314 vehicles · MOT data 1990–1990 · first-test pass rates

This page shows MOT first-test pass rates for each year the Proton Prism 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
1990	60.0%	67,415 mi	314

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