BIKERELIABILITY Reg check
Head-to-head · 2005–2025

Data as of: DVSA MOT results to 2025

Harley-Davidson XL 1200 T Superlow SPORTSTER17 vs Harley-Davidson Flstf

The Harley-Davidson XL 1200 T Superlow SPORTSTER17 passes its MOT first time more often than the Harley-Davidson Flstf: 93.4% vs 89.0%, a 4.4-point lead.

MOT reliability, side by side

first-time pass rate, outright fail rate and tests analysed · 2005–2025
Metric Harley-Davidson XL 1200 T Superlow SPORTSTER17 Harley-Davidson Flstf
First-time pass rate 93.4% 89.0%
Outright fail rate 4.2% 4.9%
Median miles at test 5,706 12,480
MOT tests analysed 530 30,148
Most common failure lamps and reflectors lighting and signalling

First-time outcomes on normal tests, 2005–2025. "Most common failure" is the component group with the most recorded defects on failed tests. Read pass rates against test counts: a smaller sample is noisier. Source: DVSA anonymised MOT results.

See each bike's full report (trend, mileage curve, failure breakdown and rivals) on its own page.