BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ HARLEY-DAVIDSON/FLSTN ST DELUXE 1690 17
Model report · 2005–2025

HARLEY-DAVIDSON FLSTN ST DELUXE 1690 17

1690cc Petrol Class 2
95.5%
first-time pass rate
2.1%
failed outright
5,449
median miles at test
242
MOT tests, 2005–2025

Pass rate over time

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

The FLSTN ST DELUXE 1690 17's first-time pass rate has risen 5.1 points since 2020, 90.0% to 95.1%.

88%94%100%2020: 90.0% pass (30 tests)2021: 95.5% pass (44 tests)2022: 95.3% pass (43 tests)2023: 95.6% pass (45 tests)2024: 100.0% pass (36 tests)2025: 95.1% pass (41 tests)20202025

What fails on a FLSTN ST DELUXE 1690 17

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
Identification of the vehicle
2 33.3
lamps and reflectors
2 33.3
brakes
1 16.7
tyres
1 16.7

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the FLSTN ST DELUXE 1690 17 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 FLSTN ST DELUXE 1690 17.

Pass rate by registration year

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

Best year to buy used: 2018 (98.6% pass). Weakest: 2017 (93.2%).

92%96%100%2017: 93.2% pass (146 tests)2018: 98.6% pass (73 tests)20172018

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.