BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ HARLEY-DAVIDSON/FXDB STREET BOB 1584 10
Model report · 2005–2025

HARLEY-DAVIDSON FXDB STREET BOB 1584 10

1585cc Petrol Class 2
87.9%
first-time pass rate
4.4%
failed outright
9,878
median miles at test
544
MOT tests, 2005–2025

Pass rate over time

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

The FXDB STREET BOB 1584 10's first-time pass rate has fallen 6.9 points since 2013, 88.7% to 81.8%.

79%88%98%2013: 88.7% pass (53 tests)2014: 82.7% pass (52 tests)2015: 83.7% pass (49 tests)2016: 85.5% pass (55 tests)2017: 89.4% pass (47 tests)2018: 94.9% pass (39 tests)2019: 92.1% pass (38 tests)2020: 84.8% pass (33 tests)2021: 87.5% pass (40 tests)2022: 93.0% pass (43 tests)2023: 92.3% pass (39 tests)2025: 81.8% pass (33 tests)20132025

Pass rate by mileage

how the FXDB STREET BOB 1584 10's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage FXDB STREET BOB 1584 10 passes first time 87.6% of the time; by 30k that's 87.1%.

86%88%90%0k: 87.6% pass (274 tests)10k: 87.8% pass (139 tests)20k: 89.6% pass (96 tests)30k: 87.1% pass (31 tests)0k20k30k

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 FXDB STREET BOB 1584 10

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lighting and signalling
14 33.3 0.4×
brakes
8 19 0.3×
steering and suspension
5 11.9 0.3×
reg plates and vin
4 9.5 1.3×
fuel and exhaust
3 7.1 0.7×
lamps and reflectors
3 7.1 0.2×
tyres and wheels
2 4.8 0.2×
steering
1 2.4 0.4×
Identification of the vehicle
1 2.4 0.8×
structure and attachments
1 2.4 0.3×

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 FXDB STREET BOB 1584 10 beats 0 of its 4 closest rivals (HARLEY-DAVIDSON FLSTF, HARLEY-DAVIDSON FLSTC, HARLEY-DAVIDSON XL1200C).

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 FXDB STREET BOB 1584 10.

Pass rate by registration year

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

Best year to buy used: 2010 (88.2% pass). Weakest: 2010 (88.2%).

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 FXDB STREET BOB 1584 10 FAQ

answers computed from the data above · terms in the glossary

Is the HARLEY-DAVIDSON FXDB STREET BOB 1584 10 reliable?

The HARLEY-DAVIDSON FXDB STREET BOB 1584 10 is more reliable than average for its class: 87.9% of its 544 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #1639 of 5426 models.

What does a FXDB STREET BOB 1584 10 fail its MOT on most?

lighting and signalling — 33% of all defects recorded against failed FXDB STREET BOB 1584 10 tests.

How many miles will a FXDB STREET BOB 1584 10 last?

The median FXDB STREET BOB 1584 10 shows 9,878 miles at test, and examples around 30k miles still pass 87.1% of the time — mileage alone rarely kills one.