Leyland Daf 400 MOT reliability

Leyland Daf 400s passed their MOT first time 77% of the time across 30 tests in 2025. 25 are still licensed in Great Britain.

These figures come from 30 MOT tests. That's a fairly small number of cars, so they may not be typical of these cars as a whole.

First-time pass rate

77%

MOTs analysed

30

Still licensed (GB)

25

Body type

–

Pass rate by year of first registration

Older cars fail more often, so compare a car with others of the same age. Years with very few MOTs can show extreme pass rates, even 0% or 100%, so give more weight to years with more tests.

In detail:

First registered

1992 diesel

7 MOTs

These figures come from only 7 MOT tests. With so few cars, a single pass or fail changes the percentages a lot, so treat them as a rough guide rather than a true average.

Passed first time 71%. Typical mileage 126,375 (most between 116,503 and 145,999).

2005: 44% → 2006: 43% → 2007: 42% → 2008: 42% → 2009: 42% → 2010: 49% → 2011: 44% → 2012: 38% → 2013: 38% → 2014: 47% → 2015: 49% → 2016: 58% → 2017: 50% → 2018: 60% → 2019: 67% → 2020: 78% → 2021: 71% → 2022: 78% → 2023: 73% → 2024: 83% → 2025: 71%

Most common failures

Other components: leaking (14.3%)
Headlamp aim: projected beam image is obviously incorrect (14.3%)
Passenger's seat: insecure (14.3%)
Mounting fixings missing (14.3%)
System: component leaking excessively or a risk of fire (14.3%)

1992 petrol

2 MOTs

These figures come from only 2 MOT tests. With so few cars, a single pass or fail changes the percentages a lot, so treat them as a rough guide rather than a true average.

Passed first time 100%. Typical mileage 47,615 (most between 46,363 and 48,866).

2005: 68% → 2006: 48% → 2007: 57% → 2008: 45% → 2009: 52% → 2010: 68% → 2011: 38% → 2012: 36% → 2013: 25% → 2014: 33% → 2015: 56% → 2016: 71% → 2017: 88% → 2018: 60% → 2019: 40% → 2020: 75% → 2021: 100% → 2022: 100% → 2023: 100% → 2024: 100% → 2025: 100%

Most common failures

Where 1992 400s fail

Body, structure & corrosion

14.3%

Brakes

14.3%

Lights & electrics

14.3%

Steering

14.3%

Exhaust, emissions & leaks

14.3%

Suspension & axles

14.3%

Looking at a particular car?

See its own MOT history, mileage and red flags, compared with these figures. Free.

Based on 2025 initial MOT tests in DVSA's anonymised MOT dataset (cars and light vans). Contains public sector information licensed under the Open Government Licence v3.0. Model details: Vehicle data by VehiclesDB.