Harley-Davidson XL 1200 X Forty Eight 18: MOT pass rate by registration year

Which XL 1200 X Forty Eight 18 years pass first time, and which fall short of the model's 87.3% average, from 1,177 DVSA tests.

2019

highest-passing year · 90.7%

2018

lowest-passing year · 86.9%

3.8pp

spread across 3 years

Pass rate by registration year

first-time pass rate · cohorts with 50 or more tests · registration year from first use date

Highest pass rate: 2019 (90.7% of 54 tests). Lowest: 2018 (86.9% of 951).

Registered	Tests	First-time pass	vs model (87.3%)
2017	167	88.6%	+1.3 pp
2018	951	86.9%	-0.4 pp
2019	54	90.7%	+3.4 pp

Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years. A first-time MOT pass is a roadworthiness check, not a full mechanical inspection.

Pass rate over time

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

Questions

Which XL 1200 X Forty Eight 18 years have the lowest MOT pass rate?: none: no registration year of the Harley-Davidson XL 1200 X Forty Eight 18 falls more than two points under the model's 87.3% overall pass rate.
Which XL 1200 X Forty Eight 18 year has the highest MOT pass rate?: 2019, at 90.7% of 54 first tests (2005–2025).
How much does the XL 1200 X Forty Eight 18 pass rate vary by year?: 3.8 percentage points between the highest (2019, 90.7%) and lowest (2018, 86.9%) cohorts with at least 50 tests. Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years.

Full report: Harley-Davidson XL 1200 X Forty Eight 18 reliability, failures and mileage · ranked #1818 of 5428 models· other Harley-Davidson models: XLH 883, Flstf, Flstc, XL, XL1200C, XL883