HARLEY-DAVIDSON FLSTF FATBOY 1584 09

1584cc Petrol Class 2

#919 of 5426 overall #141 of 397 HARLEY-DAVIDSONs #175 of 465 cruiser bikes

90.1%

first-time pass rate

3.8%

failed outright

9,347

median miles at test

677

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2012–2025

The FLSTF FATBOY 1584 09's first-time pass rate has held steady since 2012 (90.5% → 91.4%).

Pass rate by mileage

how the FLSTF FATBOY 1584 09's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage FLSTF FATBOY 1584 09 passes first time 91.3% of the time; by 20k that's 83.1%.

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 FLSTF FATBOY 1584 09

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lamps and reflectors	11	23.4	0.6×
brakes	11	23.4	0.2×
reg plates and vin	9	19.1	1.3×
tyres and wheels	5	10.6	0.3×
lighting and signalling	3	6.4	0.1×
Identification of the vehicle	3	6.4	1.9×
steering and suspension	2	4.3	0.1×
fuel and exhaust	1	2.1	0.2×
structure and attachments	1	2.1	0.2×
suspension	1	2.1	0.2×

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 FLSTF FATBOY 1584 09 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 FLSTF FATBOY 1584 09.

Pass rate by registration year

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

Best year to buy used: 2009 (91.7% pass). Weakest: 2008 (88.3%).

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 FLSTF FATBOY 1584 09 FAQ

answers computed from the data above · terms in the glossary

Is the HARLEY-DAVIDSON FLSTF FATBOY 1584 09 reliable?

The HARLEY-DAVIDSON FLSTF FATBOY 1584 09 is more reliable than average for its class: 90.1% of its 677 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #919 of 5426 models.

What does a FLSTF FATBOY 1584 09 fail its MOT on most?

lamps and reflectors — 23% of all defects recorded against failed FLSTF FATBOY 1584 09 tests.

How many miles will a FLSTF FATBOY 1584 09 last?

The median FLSTF FATBOY 1584 09 shows 9,347 miles at test, and examples around 20k miles still pass 83.1% of the time — mileage alone rarely kills one.