What year Subaru 1 8 4WD Dl is most reliable?

Based on MOT first-test pass rates, the 1991 Subaru 1 8 4WD Dl has the highest pass rate at 67.5%, out of 344 vehicles tested.

What are the most common Subaru 1 8 4WD Dl MOT failures?

The most common Subaru 1 8 4WD Dl MOT failures vary by year. Check the individual year pages for detailed defect breakdowns — links in the table above.

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Subaru 1 8 4WD Dl — Reliability by Year

2,792 vehicles · MOT data 1984–1992 · first-test pass rates

This page shows MOT first-test pass rates for each year the Subaru 1 8 4WD Dl 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

67.5% pass rate · 344 vehicles

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Lowest pass rate year

1986

0.0% pass rate · 324 vehicles

Year	Pass rate	Avg mileage	Vehicles
1992	67.3%	101,126 mi	361
1991	67.5%	123,613 mi	344
1990	50.0%	86,330 mi	200
1989	—	—	270
1988	—	—	296
1987	—	—	317
1986	0.0%	138,742 mi	324
1985	33.3%	91,087 mi	457
1984	—	—	223

Which year Subaru 1 8 4WD Dl is most reliable?

MOT pass rate by year of manufacture — averaged across each vehicle's lifetime of tests. Green = noticeably above average for this model; red = noticeably below average.

Tests range from an average of 86,330 miles (newest year) to 138,742 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 Subaru 1 8 4WD Dl.

See the buying guide →

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Check any UK registration — free MOT history and risk insights.