1975 Harley-davidson Custom MOT Pass Rate
Pass rate for Custom models manufactured in 1975, based on 47 real MOT test results.
Data from official DVSA MOT testing records
1975 Harley-davidson Custom MOT Analysis
The 1975 Harley-davidson Custom has an MOT pass rate of 89.4% based on 47 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 8,507 miles on the odometer. With a 10.6% failure rate, the 1975 Custom is rated as "Excellent" for MOT reliability.
The leading cause of MOT failure for the 1975 Harley-davidson Custom is Motorcycle tyres and wheels, responsible for 4.3% of failures. Tyre failures include tread depth below the legal minimum of 1.6mm, cuts, bulges, exposed cords, and incorrect tyre pressure. Tyres are one of the most common and easiest-to-prevent MOT failures. Typical repair costs range from £50–200 per tyre. Motorcycle steering and suspension is the second most common issue at 2.1%. Motorcycle fuel and exhaust follows at 2.1%.
Top failures specific to 1975 models only. The overall Custom 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 | Motorcycle Tyres And Wheels | 4.3% | 2 |
| 2 | Motorcycle Steering And Suspension | 2.1% | 1 |
| 3 | Motorcycle Fuel And Exhaust | 2.1% | 1 |
Failures per 10,000 Miles
avg. 8,507 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.
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| Category | Rate / 10K mi | Raw % | Count |
|---|---|---|---|
| Motorcycle tyres and wheels | 5.00 | 4.3% | 2 |
| Motorcycle steering and suspension | 2.50 | 2.1% | 1 |
| Motorcycle fuel and exhaust | 2.50 | 2.1% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1975 Harley-davidson Custom has an MOT pass rate of 89.4% based on 47 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 8,507 miles on the odometer. With a 10.6% failure rate, the 1975 Custom is rated as "Excellent" for MOT reliability.
If you own or are considering buying a 1975 Harley-davidson Custom, you can expect reliable MOT performance overall. Before your MOT, pay particular attention to motorcycle tyres and wheels: Check tread depth with a 20p coin — if the outer band is visible, the tyre is too worn. Look for bulges, cuts, or embedded objects. Ensure all tyres match the recommended size and load rating. With relatively low average mileage of 8,507 miles, many of these vehicles are still in good mechanical condition.
Motorcycle tyres and wheels — 4.3% of failures
Motorcycle tyres and wheels issues account for 4.3% of MOT failures on 1975 Harley-davidson Custom models. Tyre failures include tread depth below the legal minimum of 1.6mm, cuts, bulges, exposed cords, and incorrect tyre pressure. Tyres are one of the most common and easiest-to-prevent MOT failures. Typical repair costs: £50–200 per tyre. Pre-MOT check: Check tread depth with a 20p coin — if the outer band is visible, the tyre is too worn. Look for bulges, cuts, or embedded objects. Ensure all tyres match the recommended size and load rating.
Motorcycle steering and suspension — 2.1% of failures
Motorcycle steering and suspension issues account for 2.1% of MOT failures on 1975 Harley-davidson Custom 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.
Motorcycle fuel and exhaust — 2.1% of failures
Motorcycle fuel and exhaust issues account for 2.1% of MOT failures on 1975 Harley-davidson Custom models. Motorcycle fuel and exhaust issues are a common cause of MOT failure. Regular inspection and maintenance of these components helps ensure your vehicle passes its MOT. Typical repair costs: £100–400. Pre-MOT check: Have this system checked during regular servicing. Look for warning signs like unusual noises, vibrations, or dashboard warning lights.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.