Know Your MOT

MOT failure rate and common problems for the Harley Davidson Bad, and how to check your own car by registration.

Updated 05 September 2026.

6.0%fail rate

Harley Davidson Bad MOT failure rate

What a Harley Davidson Bad fails its MOT on, and the part that fixes each.

What it fails on, and why

Lamps & electrical50.0% of failures

Lighting is the single most common MOT failure and the cheapest to put right. A blown headlight, brake-light or number-plate bulb, a cracked lens, or a headlamp beam that points too high or low will all fail. Most are a two-minute bulb swap.

Visibility/wipers25.0% of failures

Visibility failures include torn or smearing wiper blades, a washer jet that does not reach the screen, and chips or cracks in the driver's swept area. Blades and washer fluid are quick, cheap fixes.

The parts that fix each

If your car has just failed, you have 10 working days to fix the items and get a free partial retest. Confirm the exact fitment against your registration or VIN before buying.

For the lamps & electrical failure: Harley Davidson Bad headlight and indicator bulbsShop Harley Davidson Bad headlight and indicator bulbs on AmazonaffiliateFind Harley Davidson Bad headlight and indicator bulbs on eBayaffiliate
For the visibility/wipers failure: Harley Davidson Bad wiper bladesShop Harley Davidson Bad wiper blades on AmazonaffiliateFind Harley Davidson Bad wiper blades on eBayaffiliate

Other models

All Harley Davidson models MOT failure rates comparedRanked worst to bestHarley Davidson Xl MOT failures10.7% failure rateHarley Davidson Flstf MOT failures9.8% failure rateFord Fiesta MOT failures27.1% failure rate

Questions and answers

What is the MOT failure rate of the Harley Davidson Bad?

It fails 6.0% of its MOT tests across the DVSA record, from 67 tests.

What do these cars fail their MOT on most?

The most common failure area is lamps & electrical, at 50.0% of this model's failures.