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Leyland Daf 400 Series Diesel — Reliability by Year

23,297 vehicles · MOT data 1989–1995 · first-test pass rates

This page shows MOT first-test pass rates for each year the Leyland Daf 400 Series Diesel 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
1995
63.2% pass rate · 131 vehicles
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Lowest pass rate year
1989
59.1% pass rate · 1,489 vehicles
Year Pass rate Avg mileage Vehicles
1995
63.2%
105,492 mi 131
1994
62.0%
107,445 mi 1,682
1993
60.7%
109,987 mi 3,956
1992
61.1%
108,399 mi 5,770
1991
63.1%
91,099 mi 5,327
1990
60.4%
91,006 mi 4,942
1989
59.1%
103,829 mi 1,489

Which year Leyland Daf 400 Series Diesel 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 91,006 miles (newest year) to 109,987 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 Leyland Daf 400 Series Diesel.

See the buying guide →

← All Leyland Daf models

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