Harley-Davidson XL 883 N Iron 17: MOT pass rate by registration year

Which XL 883 N Iron 17 years pass first time, and which fall short of the model's 90.1% average, from 3,806 DVSA tests.

2016

highest-passing year · 90.8%

2017

lowest-passing year · 90.0%

0.8pp

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: 2016 (90.8% of 575 tests). Lowest: 2017 (90.0% of 2,850).

Registered	Tests	First-time pass	vs model (90.1%)
2016	575	90.8%	+0.7 pp
2017	2,850	90.0%	-0.1 pp
2018	365	90.1%	+0.0 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 · 2019–2025

Questions

Which XL 883 N Iron 17 years have the lowest MOT pass rate?: none: no registration year of the Harley-Davidson XL 883 N Iron 17 falls more than two points under the model's 90.1% overall pass rate.
Which XL 883 N Iron 17 year has the highest MOT pass rate?: 2016, at 90.8% of 575 first tests (2005–2025).
How much does the XL 883 N Iron 17 pass rate vary by year?: 0.8 percentage points between the highest (2016, 90.8%) and lowest (2017, 90.0%) 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 883 N Iron 17 reliability, failures and mileage · ranked #921 of 5428 models· other Harley-Davidson models: XLH 883, Flstf, Flstc, XL, XL1200C, XL883