1990 Leyland Daf 400 Series Diesel Turbo MOT Pass Rate
Pass rate for 400 Series Diesel Turbo models manufactured in 1990, based on 47 real MOT test results.
Data from official DVSA MOT testing records
1990 Leyland Daf 400 Series Diesel Turbo MOT Analysis
The 1990 Leyland Daf 400 Series Diesel Turbo has an MOT pass rate of 59.6% based on 47 tests — slightly below the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 108,072 miles on the odometer. With a 40.4% failure rate, the 1990 400 Series Diesel Turbo is rated as "Below Average" for MOT reliability.
The leading cause of MOT failure for the 1990 Leyland Daf 400 Series Diesel Turbo is Lamps, reflectors and electrical equipment, responsible for 29.8% of failures. Lighting failures cover all external lights: headlights, tail lights, brake lights, indicators, fog lights, and reflectors. A single blown bulb will cause an MOT fail. This is one of the most preventable failure categories. Typical repair costs range from £5–50. Suspension is the second most common issue at 10.6%. Steering follows at 4.3%.
Top failures specific to 1990 models only. The overall 400 Series Diesel Turbo page may show different rankings.
What Fails Most
What Fails on This Car?
Click a category to see specific failure items.
View as table
| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Lamps, Reflectors And Electrical Equipment | 29.8% | 14 |
| 2 | Suspension | 10.6% | 5 |
| 3 | Steering | 4.3% | 2 |
| 4 | Visibility | 2.1% | 1 |
| 5 | Body, Chassis, Structure | 2.1% | 1 |
| 6 | Identification Of The Vehicle | 2.1% | 1 |
Failures per 10,000 Miles
avg. 108,072 miFor every 10,000 miles driven, this shows what percentage of MOT tests fail for each category. This accounts for how far cars are actually driven, not just raw pass/fail counts.
View as table
| Category | Rate / 10K mi | Raw % | Count |
|---|---|---|---|
| Lamps & Electrical | 2.76 | 29.8% | 14 |
| Suspension | 0.98 | 10.6% | 5 |
| Steering | 0.39 | 4.3% | 2 |
| Visibility | 0.20 | 2.1% | 1 |
| Body & Structure | 0.20 | 2.1% | 1 |
| Identification of the vehicle | 0.20 | 2.1% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1990 Leyland Daf 400 Series Diesel Turbo has an MOT pass rate of 59.6% based on 47 tests — slightly below the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 108,072 miles on the odometer. With a 40.4% failure rate, the 1990 400 Series Diesel Turbo is rated as "Below Average" for MOT reliability.
If you own or are considering buying a 1990 Leyland Daf 400 Series Diesel Turbo, budget for potential repairs before each MOT. Before your MOT, pay particular attention to lamps, reflectors and electrical equipment: Walk around the car and check every light — headlights (dipped and main beam), side lights, tail lights, brake lights, indicators, hazard lights, reverse light, rear fog light, and number plate lights. Replace any blown bulbs before the test. With an average mileage of 108,072 miles, these vehicles are in the higher-mileage bracket where wear-related failures become more common.
Lamps, reflectors and electrical equipment — 29.8% of failures
Lamps, reflectors and electrical equipment issues account for 29.8% of MOT failures on 1990 Leyland Daf 400 Series Diesel Turbo models. Lighting failures cover all external lights: headlights, tail lights, brake lights, indicators, fog lights, and reflectors. A single blown bulb will cause an MOT fail. This is one of the most preventable failure categories. Typical repair costs: £5–50. Pre-MOT check: Walk around the car and check every light — headlights (dipped and main beam), side lights, tail lights, brake lights, indicators, hazard lights, reverse light, rear fog light, and number plate lights. Replace any blown bulbs before the test.
Suspension — 10.6% of failures
Suspension issues account for 10.6% of MOT failures on 1990 Leyland Daf 400 Series Diesel Turbo models. Suspension failures typically involve worn bushes, leaking shock absorbers, broken coil springs, and damaged suspension arms. These affect ride quality, tyre wear, and road holding. Typical repair costs: £200–500. Pre-MOT check: Look for uneven tyre wear, listen for clunking over bumps, and check if the car pulls to one side. A bouncy ride suggests worn shock absorbers. Visually inspect coil springs for cracks.
Steering — 4.3% of failures
Steering issues account for 4.3% of MOT failures on 1990 Leyland Daf 400 Series Diesel Turbo models. Steering failures include excessive play in the steering wheel, leaking power steering fluid, worn track rod ends, and damaged steering rack. These affect vehicle control and are closely related to suspension wear. Typical repair costs: £150–600. Pre-MOT check: Check for excessive steering wheel play (more than a few inches of free movement). Listen for whining from the power steering pump. Look for fluid leaks under the car near the front wheels.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.