HARLEY-DAVIDSON FXFB FAT BOB 1745 20

1745cc Petrol Class 2

92.5%

first-time pass rate

4.7%

failed outright

4,322

median miles at test

106

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2023–2025

The FXFB FAT BOB 1745 20's first-time pass rate has risen 4.3 points since 2023, 92.7% to 97.0%.

What fails on a FXFB FAT BOB 1745 20

failure defects by component group · advisories excluded

Component group	Defects	% of defects
lamps and reflectors	6	50
structure and attachments	2	16.7
Identification of the vehicle	1	8.3
brakes	1	8.3
steering	1	8.3
tyres	1	8.3

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 FXFB FAT BOB 1745 20 beats 4 of its 4 closest rivals (HARLEY-DAVIDSON FLSTF, HARLEY-DAVIDSON FLSTC, HARLEY-DAVIDSON FXDWG).

HARLEY-DAVIDSON FLSTF 88.9% pass · 30.1k tests HARLEY-DAVIDSON FLSTC 89.4% pass · 23.7k tests HARLEY-DAVIDSON FXDWG 88.7% pass · 14.6k tests HARLEY-DAVIDSON FLSTFI 89.4% pass · 13.2k 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 FXFB FAT BOB 1745 20.

Pass rate by registration year

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

Best year to buy used: 2020 (94.4% pass). Weakest: 2020 (94.4%).

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.