BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025
89.5%
first-time pass rate
4.5%
failed outright
16,337
median miles at test
3,677
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2005–2025

The FLSTS's first-time pass rate has risen 3.3 points since 2005, 90.6% to 93.9%.

82%89%96%2005: 90.6% pass (32 tests)2006: 93.6% pass (250 tests)2007: 90.4% pass (272 tests)2008: 89.9% pass (237 tests)2009: 86.0% pass (229 tests)2010: 87.6% pass (225 tests)2011: 88.2% pass (221 tests)2012: 84.9% pass (212 tests)2013: 84.7% pass (209 tests)2014: 90.7% pass (204 tests)2015: 89.1% pass (193 tests)2016: 92.5% pass (199 tests)2017: 90.1% pass (181 tests)2018: 90.2% pass (133 tests)2019: 91.3% pass (138 tests)2020: 92.0% pass (112 tests)2021: 91.7% pass (156 tests)2022: 88.7% pass (133 tests)2023: 90.1% pass (131 tests)2024: 88.5% pass (96 tests)2025: 93.9% pass (114 tests)20052025

Pass rate by mileage

how the FLSTS's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage FLSTS passes first time 90.7% of the time; by 50k that's 87.0%.

86%89%92%0k: 90.7% pass (1,091 tests)10k: 89.0% pass (1,074 tests)20k: 90.0% pass (678 tests)30k: 90.4% pass (386 tests)40k: 88.8% pass (233 tests)50k: 87.0% pass (92 tests)0k30k50k

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 FLSTS

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lighting and signalling
71 23.7 0.3×
reg plates and vin
52 17.3 1.7×
brakes
52 17.3 0.2×
lamps and reflectors
34 11.3 0.4×
steering and suspension
31 10.3 0.3×
tyres and wheels
29 9.7 0.4×
fuel and exhaust
12 4 0.4×
Identification of the vehicle
8 2.7 0.9×
steering
6 2 0.4×
tyres
5 1.7 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 FLSTS beats 4 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 FLSTS.

Pass rate by registration year

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

Best year to buy used: 1999 (92.8% pass). Weakest: 2001 (87.8%).

87%90%94%1996: 89.7% pass (68 tests)1997: 89.7% pass (698 tests)1998: 89.6% pass (703 tests)1999: 92.8% pass (640 tests)2000: 88.3% pass (435 tests)2001: 87.8% pass (188 tests)2002: 90.4% pass (260 tests)2003: 88.4% pass (335 tests)199620002003

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 FLSTS FAQ

answers computed from the data above · terms in the glossary

Is the HARLEY-DAVIDSON FLSTS reliable?

The HARLEY-DAVIDSON FLSTS is more reliable than average for its class: 89.5% of its 3,677 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #1111 of 5426 models.

What does a FLSTS fail its MOT on most?

lighting and signalling — 24% of all defects recorded against failed FLSTS tests.

What is the best year of FLSTS to buy used?

By first-time pass rate, 1999-registered examples do best (92.8%) and 2001 worst (87.8%). Condition and history still trump the year.

How many miles will a FLSTS last?

The median FLSTS shows 16,337 miles at test, and examples around 50k miles still pass 87.0% of the time — mileage alone rarely kills one.