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

HARLEY-DAVIDSON FLSTN ST DELUXE 1690

1690cc Petrol Class 2
91.4%
first-time pass rate
5.3%
failed outright
7,961
median miles at test
417
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2015–2025

The FLSTN ST DELUXE 1690's first-time pass rate has risen 1.7 points since 2015, 95.0% to 96.7%.

81%90%100%2015: 95.0% pass (40 tests)2016: 87.5% pass (48 tests)2017: 90.5% pass (42 tests)2018: 94.7% pass (38 tests)2019: 97.1% pass (35 tests)2021: 89.7% pass (39 tests)2022: 92.5% pass (40 tests)2023: 84.2% pass (38 tests)2024: 86.7% pass (30 tests)2025: 96.7% pass (30 tests)20152025

Pass rate by mileage

how the FLSTN ST DELUXE 1690's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage FLSTN ST DELUXE 1690 passes first time 94.0% of the time; by 20k that's 88.4%.

87%91%95%0k: 94.0% pass (235 tests)10k: 90.2% pass (122 tests)20k: 88.4% pass (43 tests)0k10k20k

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 FLSTN ST DELUXE 1690

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lamps and reflectors
8 25
brakes
6 18.8
tyres
4 12.5
Identification of the vehicle
4 12.5
wheels
2 6.2
audible warning (Horn)
2 6.2
lighting and signalling
2 6.2
reg plates and vin
2 6.2
steering
1 3.1
steering and suspension
1 3.1

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 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.

Pass rate by registration year

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

Best year to buy used: 2012 (92.6% pass). Weakest: 2011 (86.6%).

85%90%94%2011: 86.6% pass (82 tests)2012: 92.6% pass (258 tests)2013: 92.2% pass (77 tests)201120122013

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.