What year Proton 1 5 Gls is most reliable?

Based on MOT first-test pass rates, the 1991 Proton 1 5 Gls has the highest pass rate at 72.5%, out of 309 vehicles tested.

What are the most common Proton 1 5 Gls MOT failures?

The most common Proton 1 5 Gls MOT failures vary by year. Check the individual year pages for detailed defect breakdowns — links in the table above.

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Proton 1 5 Gls — Reliability by Year

1,437 vehicles · MOT data 1991–1994 · first-test pass rates

This page shows MOT first-test pass rates for each year the Proton 1 5 Gls was manufactured — click any year to explore that cohort in detail. Trying to decide which year to buy? See the full buying guide →

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Best pass rate year

1991

72.5% pass rate · 309 vehicles

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Lowest pass rate year

1994

68.4% pass rate · 160 vehicles

Year	Pass rate	Avg mileage	Vehicles
1994	68.4%	76,629 mi	160
1993	72.2%	75,747 mi	469
1992	70.2%	79,786 mi	499
1991	72.5%	86,477 mi	309

Which year Proton 1 5 Gls is most reliable?

MOT pass rate by year of manufacture — averaged across each vehicle's lifetime of tests.

Tests range from an average of 75,747 miles (newest year) to 86,477 miles (oldest year). Older years naturally accumulate more tests at higher mileages — see the mileage-normalised breakdown →

Trying to decide which year to buy?

We've done the full analysis — which years to look for, which to avoid, and where to find the best value for reliability on a Proton 1 5 Gls.

See the buying guide →

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