HARLEY-DAVIDSON FLSTF vs HARLEY-DAVIDSON FXDB

The HARLEY-DAVIDSON FLSTF passes its MOT first time more often than the HARLEY-DAVIDSON FXDB — 88.9% vs 88.3%, a 0.6-point lead.

MOT reliability, side by side

first-time pass rate, outright fail rate and tests analysed · 2005–2025

Metric	HARLEY-DAVIDSON FLSTF	HARLEY-DAVIDSON FXDB
First-time pass rate	88.9%	88.3%
Outright fail rate	4.9%	4.8%
Median miles at test	12,491	9,975
MOT tests analysed	30,115	8,694
Most common failure	lighting and signalling	lamps and reflectors

First-time outcomes on normal tests, 2005–2025. "Most common failure" is the component group with the most recorded defects on failed tests. Read pass rates against test counts: a smaller sample is noisier. Source: DVSA anonymised MOT results.

HARLEY-DAVIDSON FLSTF 88.9% pass · 30.1k tests HARLEY-DAVIDSON FXDB 88.3% pass · 8,694 tests

See each bike's full report — trend, mileage curve, failure breakdown and rivals — on its own page.