BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025
87.4%
first-time pass rate
5.1%
failed outright
18,108
median miles at test
1,234
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2025

The SOFT TAIL's first-time pass rate has held steady since 2006 (90.8% → 91.7%).

74%87%100%2006: 90.8% pass (65 tests)2007: 85.2% pass (61 tests)2008: 85.9% pass (71 tests)2009: 81.9% pass (72 tests)2010: 87.0% pass (69 tests)2011: 85.5% pass (76 tests)2012: 78.3% pass (69 tests)2013: 91.1% pass (79 tests)2014: 87.3% pass (71 tests)2015: 87.5% pass (80 tests)2016: 88.2% pass (76 tests)2017: 85.1% pass (67 tests)2018: 86.8% pass (53 tests)2019: 89.5% pass (57 tests)2020: 91.2% pass (34 tests)2021: 96.0% pass (50 tests)2022: 90.2% pass (51 tests)2023: 90.4% pass (52 tests)2024: 83.3% pass (30 tests)2025: 91.7% pass (36 tests)20062025

Pass rate by mileage

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

A low-mileage SOFT TAIL passes first time 87.5% of the time; by 40k that's 84.4%.

83%88%92%0k: 87.5% pass (327 tests)10k: 90.6% pass (309 tests)20k: 84.4% pass (211 tests)30k: 86.7% pass (181 tests)40k: 84.4% pass (45 tests)0k20k40k

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 SOFT TAIL

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lighting and signalling
34 29.8 0.5×
reg plates and vin
17 14.9 1.8×
brakes
16 14 0.3×
tyres and wheels
13 11.4 0.4×
lamps and reflectors
12 10.5 0.5×
fuel and exhaust
8 7 0.9×
steering and suspension
5 4.4 0.1×
tyres
4 3.5 0.5×
structure and attachments
3 2.6 0.4×
drive system
2 1.8 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 SOFT TAIL 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 SOFT TAIL.

Pass rate by registration year

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

Best year to buy used: 2001 (92.1% pass). Weakest: 2005 (82.0%).

80%87%94%1971: 85.7% pass (70 tests)1990: 84.7% pass (85 tests)1992: 84.8% pass (92 tests)1993: 84.1% pass (88 tests)1994: 88.0% pass (150 tests)1995: 86.3% pass (51 tests)1996: 89.5% pass (114 tests)1997: 88.4% pass (69 tests)2001: 92.1% pass (63 tests)2002: 85.5% pass (55 tests)2005: 82.0% pass (50 tests)197119952005

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 SOFT TAIL FAQ

answers computed from the data above · terms in the glossary

Is the HARLEY-DAVIDSON SOFT TAIL reliable?

The HARLEY-DAVIDSON SOFT TAIL is more reliable than average for its class: 87.4% of its 1,234 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #1784 of 5426 models.

What does a SOFT TAIL fail its MOT on most?

lighting and signalling — 30% of all defects recorded against failed SOFT TAIL tests.

What is the best year of SOFT TAIL to buy used?

By first-time pass rate, 2001-registered examples do best (92.1%) and 2005 worst (82.0%). Condition and history still trump the year.

How many miles will a SOFT TAIL last?

The median SOFT TAIL shows 18,108 miles at test, and examples around 40k miles still pass 84.4% of the time — mileage alone rarely kills one.