1998 Harley Davidson Fat Boy MOT Pass Rate
Pass rate for Fat Boy models manufactured in 1998, based on 101 real MOT test results.
Data from official DVSA MOT testing records
1998 Harley Davidson Fat Boy MOT Analysis
The 1998 Harley Davidson Fat Boy has an MOT pass rate of 81.2% based on 101 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 17,473 miles on the odometer. With a 18.8% failure rate, the 1998 Fat Boy is rated as "Excellent" for MOT reliability.
The leading cause of MOT failure for the 1998 Harley Davidson Fat Boy is Motorcycle lamps and reflectors, responsible for 4.0% 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.
Top failures specific to 1998 models only. The overall Fat Boy 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 Lamps And Reflectors | 4.0% | 4 |
Failures per 10,000 Miles
avg. 17,473 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 |
|---|---|---|---|
| Motorcycle lamps and reflectors | 2.27 | 4.0% | 4 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1998 Harley Davidson Fat Boy has an MOT pass rate of 81.2% based on 101 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 17,473 miles on the odometer. With a 18.8% failure rate, the 1998 Fat Boy is rated as "Excellent" for MOT reliability.
If you own or are considering buying a 1998 Harley Davidson Fat Boy, you can expect reliable MOT performance overall. Before your MOT, pay particular attention to motorcycle lamps and reflectors: 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 relatively low average mileage of 17,473 miles, many of these vehicles are still in good mechanical condition.
Motorcycle lamps and reflectors — 4.0% of failures
Motorcycle lamps and reflectors issues account for 4.0% of MOT failures on 1998 Harley Davidson Fat Boy 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.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.