Harley-Davidson Flhrc Road King CL 1745 17 vs Harley-Davidson Flstfi

The Harley-Davidson Flhrc Road King CL 1745 17 passes its MOT first time more often than the Harley-Davidson Flstfi: 95.9% vs 89.4%, a 6.5-point lead.

MOT reliability, side by side

first-time pass rate, outright fail rate and tests analysed · 2005–2025

Metric	Harley-Davidson Flhrc Road King CL 1745 17	Harley-Davidson Flstfi
First-time pass rate	95.9%	89.4%
Outright fail rate	1.7%	4.6%
Vs comparable bikes (age & mileage adjusted)	+7.3 pts	+3.6 pts
Engine size	1,745cc	1,450cc
Median miles at test	6,920	11,248
MOT tests analysed	172	13,234
Most common failure	tyres	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.

"Vs comparable bikes" is the first-time pass rate minus the rate expected for each bike's own mix of age, mileage and test class, in percentage points: positive means better than comparable bikes. How this works.

Pass rate by test year

first-time MOT pass rate in each calendar year both bikes were tested

Test year	Harley-Davidson Flhrc Road King CL 1745 17	Harley-Davidson Flstfi
2020	96.9%	91.0%
2021	90.9%	91.2%
2022	100.0%	92.0%

Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.

Pass rate by mileage

first-time MOT pass rate by miles on the clock at test

Mileage	Harley-Davidson Flhrc Road King CL 1745 17	Harley-Davidson Flstfi
0k-10k miles	95.6%	89.7%
10k-20k miles	97.3%	89.2%

Bands with fewer than 30 tests for either bike are left out.

HARLEY-DAVIDSON FLHRC ROAD KING CL 1745 17 95.9% pass · 172 tests HARLEY-DAVIDSON FLSTFI 89.4% pass · 13.2k tests

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