What year Proton 1 5 Gl is most reliable?

Based on MOT first-test pass rates, the 1991 Proton 1 5 Gl has the highest pass rate at 72.2%, out of 384 vehicles tested.

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

The most common Proton 1 5 Gl 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 Gl — Reliability by Year

2,174 vehicles · MOT data 1990–1995 · first-test pass rates

This page shows MOT first-test pass rates for each year the Proton 1 5 Gl 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

72.2% pass rate · 384 vehicles

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Lowest pass rate year

1990

64.9% pass rate · 121 vehicles

Year	Pass rate	Avg mileage	Vehicles
1995	69.0%	74,645 mi	120
1994	66.7%	81,154 mi	394
1993	71.2%	77,243 mi	542
1992	69.5%	81,045 mi	613
1991	72.2%	82,215 mi	384
1990	64.9%	78,290 mi	121

Which year Proton 1 5 Gl is most reliable?

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

Tests range from an average of 74,645 miles (newest year) to 82,215 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 Gl.

See the buying guide →

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