BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ HARLEY-DAVIDSON/XL 1200 C CUSTOM SPORTSTER 18
Model report · 2005–2025

HARLEY-DAVIDSON XL 1200 C CUSTOM SPORTSTER 18

1202cc Petrol Class 2
86.9%
first-time pass rate
5.2%
failed outright
5,372
median miles at test
268
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2021–2025

The XL 1200 C CUSTOM SPORTSTER 18's first-time pass rate has risen 11.7 points since 2021, 83.9% to 95.6%.

74%87%100%2021: 83.9% pass (62 tests)2022: 90.9% pass (55 tests)2023: 78.6% pass (56 tests)2024: 86.7% pass (45 tests)2025: 95.6% pass (45 tests)20212025

What fails on a XL 1200 C CUSTOM SPORTSTER 18

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lamps and reflectors
11 40.7
tyres
4 14.8
brakes
4 14.8
structure and attachments
3 11.1
steering
2 7.4
Identification of the vehicle
2 7.4
suspension
1 3.7

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 XL 1200 C CUSTOM SPORTSTER 18 beats 0 of its 4 closest rivals (TRIUMPH BONNEVILLE, TRIUMPH THUNDERBIRD, HARLEY-DAVIDSON XLH 883).

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 XL 1200 C CUSTOM SPORTSTER 18.

Pass rate by registration year

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

Best year to buy used: 2018 (86.2% pass). Weakest: 2018 (86.2%).

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.