HARLEY-DAVIDSON FAT BOB FXDF 103 1690 17

1690cc Petrol Class 2

#1075 of 5426 overall #170 of 397 HARLEY-DAVIDSONs #205 of 465 cruiser bikes

89.6%

first-time pass rate

3.8%

failed outright

6,987

median miles at test

871

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2020–2025

The FAT BOB FXDF 103 1690 17's first-time pass rate has fallen 2.9 points since 2020, 92.8% to 89.9%.

Pass rate by mileage

how the FAT BOB FXDF 103 1690 17's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage FAT BOB FXDF 103 1690 17 passes first time 89.4% of the time; by 20k that's 93.9%.

First-time pass rate by odometer reading at test, 10,000-mile bands for this model. Mileage is the strongest reliability signal. See the full curve.

What fails on a FAT BOB FXDF 103 1690 17

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lamps and reflectors	31	59.6	1.8×
suspension	6	11.5	0.9×
Identification of the vehicle	5	9.6	2.5×
brakes	4	7.7	0.1×
steering	3	5.8	0.8×
tyres	3	5.8	0.5×

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects. "vs all bikes" is how often this model's tests record a defect in the group, as a multiple of the all-bike rate.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the FAT BOB FXDF 103 1690 17 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 FAT BOB FXDF 103 1690 17.

Pass rate by registration year

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

Best year to buy used: 2016 (95.4% pass). Weakest: 2017 (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.

HARLEY-DAVIDSON FAT BOB FXDF 103 1690 17 FAQ

answers computed from the data above · terms in the glossary

Is the HARLEY-DAVIDSON FAT BOB FXDF 103 1690 17 reliable?

The HARLEY-DAVIDSON FAT BOB FXDF 103 1690 17 is more reliable than average for its class: 89.6% of its 871 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #1075 of 5426 models.

What does a FAT BOB FXDF 103 1690 17 fail its MOT on most?

lamps and reflectors — 60% of all defects recorded against failed FAT BOB FXDF 103 1690 17 tests.

How many miles will a FAT BOB FXDF 103 1690 17 last?

The median FAT BOB FXDF 103 1690 17 shows 6,987 miles at test, and examples around 20k miles still pass 93.9% of the time — mileage alone rarely kills one.