BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ HARLEY-DAVIDSON/FXFBS FAT BOB 114 1868 21
Model report · 2005–2025

HARLEY-DAVIDSON FXFBS FAT BOB 114 1868 21

1868cc Petrol Class 2
93.0%
first-time pass rate
2.8%
failed outright
4,920
median miles at test
284
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2024–2025

The FXFBS FAT BOB 114 1868 21's first-time pass rate has risen 2.6 points since 2024, 91.5% to 94.1%.

91%93%95%2024: 91.5% pass (130 tests)2025: 94.1% pass (152 tests)20242025

What fails on a FXFBS FAT BOB 114 1868 21

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lamps and reflectors
6 46.2
brakes
3 23.1
Identification of the vehicle
2 15.4
steering
1 7.7
tyres
1 7.7

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 FXFBS FAT BOB 114 1868 21 beats 4 of its 4 closest rivals (HARLEY-DAVIDSON FLSTF, HARLEY-DAVIDSON FLSTC, TRIUMPH ROCKET III).

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 FXFBS FAT BOB 114 1868 21.

Pass rate by registration year

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

Best year to buy used: 2021 (92.8% pass). Weakest: 2021 (92.8%).

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.