HARLEY-DAVIDSON BAD BOY

1340cc Petrol Class 2

92.6%

first-time pass rate

3.7%

failed outright

18,076

median miles at test

108

MOT tests, 2005–2025

What fails on a BAD BOY

failure defects by component group · advisories excluded

Component group	Defects	% of defects
lamps and reflectors	4	50
fuel and exhaust	1	12.5
steering	1	12.5
steering and suspension	1	12.5
wheels	1	12.5

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the BAD BOY beats 4 of its 4 closest rivals (HARLEY-DAVIDSON FLSTF, HARLEY-DAVIDSON FLSTC, HARLEY-DAVIDSON XL1200C).

HARLEY-DAVIDSON FLSTF 88.9% pass · 30.1k tests HARLEY-DAVIDSON FLSTC 89.4% pass · 23.7k tests HARLEY-DAVIDSON XL1200C 88.4% pass · 15.7k tests HARLEY-DAVIDSON FXDWG 88.7% pass · 14.6k tests

Rivals share this bike's type and sit within ±30% of its engine capacity, ≥ 5,000 tests. Card colour = better/worse first-time pass rate than the BAD BOY.

Pass rate by registration year

how each model-year cohort fares · registration year from first use date

Best year to buy used: 1996 (92.2% pass). Weakest: 1996 (92.2%).

First-time pass rate by the year each bike was first registered (cohorts with ≥ 50 tests). Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years.