HARLEY-DAVIDSON FLSTFB FATBOY SPECIAL 1584

1585cc Petrol Class 2

#1962 of 5426 overall #341 of 397 HARLEY-DAVIDSONs #395 of 465 cruiser bikes

86.8%

first-time pass rate

5.0%

failed outright

10,934

median miles at test

598

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2013–2025

The FLSTFB FATBOY SPECIAL 1584's first-time pass rate has fallen 1.4 points since 2013, 88.5% to 87.1%.

Pass rate by mileage

how the FLSTFB FATBOY SPECIAL 1584's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage FLSTFB FATBOY SPECIAL 1584 passes first time 87.6% of the time; by 20k that's 89.8%.

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 FLSTFB FATBOY SPECIAL 1584

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lamps and reflectors	10	20.4	0.9×
tyres and wheels	7	14.3	0.6×
brakes	7	14.3	0.2×
lighting and signalling	6	12.2	0.2×
fuel and exhaust	6	12.2	1.3×
reg plates and vin	4	8.2	0.9×
suspension	3	6.1	0.7×
Identification of the vehicle	2	4.1	1.4×
steering	2	4.1	0.8×
tyres	2	4.1	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 FLSTFB FATBOY SPECIAL 1584 beats 0 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 FLSTFB FATBOY SPECIAL 1584.

Pass rate by registration year

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

Best year to buy used: 2010 (87.5% pass). Weakest: 2009 (82.8%).

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 FLSTFB FATBOY SPECIAL 1584 FAQ

answers computed from the data above · terms in the glossary

Is the HARLEY-DAVIDSON FLSTFB FATBOY SPECIAL 1584 reliable?

The HARLEY-DAVIDSON FLSTFB FATBOY SPECIAL 1584 is about average for its class: 86.8% of its 598 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #1962 of 5426 models.

What does a FLSTFB FATBOY SPECIAL 1584 fail its MOT on most?

lamps and reflectors — 20% of all defects recorded against failed FLSTFB FATBOY SPECIAL 1584 tests.

How many miles will a FLSTFB FATBOY SPECIAL 1584 last?

The median FLSTFB FATBOY SPECIAL 1584 shows 10,934 miles at test, and examples around 20k miles still pass 89.8% of the time — mileage alone rarely kills one.