BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ HARLEY-DAVIDSON/FXFBS FAT BOB 114 1868 20
Model report · 2005–2025

HARLEY-DAVIDSON FXFBS FAT BOB 114 1868 20

1868cc Petrol Class 2
88.3%
first-time pass rate
4.5%
failed outright
5,223
median miles at test
222
MOT tests, 2005–2025

Pass rate over time

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

The FXFBS FAT BOB 114 1868 20's first-time pass rate has risen 7.8 points since 2023, 84.6% to 92.4%.

83%89%94%2023: 84.6% pass (78 tests)2024: 92.1% pass (63 tests)2025: 92.4% pass (66 tests)20232025

What fails on a FXFBS FAT BOB 114 1868 20

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lamps and reflectors
7 43.8
Identification of the vehicle
4 25
brakes
4 25
structure and attachments
1 6.2

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 20 beats 0 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 20.

Pass rate by registration year

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

Best year to buy used: 2020 (88.8% pass). Weakest: 2020 (88.8%).

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.