Data as of: DVSA MOT results to 2025
Harley-Davidson Flhtcui vs Harley-Davidson XL1200C
The Harley-Davidson Flhtcui passes its MOT first time more often than the Harley-Davidson XL1200C: 90.7% vs 88.4%, a 2.3-point lead.
MOT reliability, side by side
| Metric | Harley-Davidson Flhtcui | Harley-Davidson XL1200C |
|---|---|---|
| First-time pass rate | 90.7% | 88.4% |
| Outright fail rate | 5.3% | 5.7% |
| Vs comparable bikes (age & mileage adjusted) | +7.1 pts | +2.3 pts |
| Engine size | 1,450cc | 1,200cc |
| Rank among all models | #748 of 5428 | #1478 of 5428 |
| Median miles at test | 22,405 | 9,976 |
| MOT tests analysed | 7,209 | 15,738 |
| Most common failure | brakes | 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.
What fails, side by side
| Component | Harley-Davidson Flhtcui | Harley-Davidson XL1200C |
|---|---|---|
| Lights & signalling | 2.0% | 2.5% |
| Brakes | 1.7% | 1.2% |
| Tyres & wheels | 1.1% | 1.1% |
| Steering & suspension | 0.6% | 0.8% |
| Fuel & exhaust | 0.4% | 0.8% |
| Structure & body | 0.2% | 0.3% |
A test that fails on two components counts once in each. Component links go to the bikes most likely to fail on it.
Pass rate by test year
| Test year | Harley-Davidson Flhtcui | Harley-Davidson XL1200C |
|---|---|---|
| 2018 | 91.2% | 90.7% |
| 2019 | 87.8% | 89.2% |
| 2020 | 89.2% | 91.8% |
| 2021 | 91.6% | 90.0% |
| 2022 | 88.6% | 88.3% |
| 2023 | 90.0% | 88.7% |
| 2024 | 91.6% | 90.8% |
| 2025 | 94.0% | 88.9% |
Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.
Pass rate by mileage
| Mileage | Harley-Davidson Flhtcui | Harley-Davidson XL1200C |
|---|---|---|
| 0k-10k miles | 92.1% | 89.9% |
| 10k-20k miles | 92.1% | 88.1% |
| 20k-30k miles | 91.5% | 86.1% |
| 30k-40k miles | 89.9% | 86.1% |
| 40k-50k miles | 88.0% | 80.3% |
| 50k-60k miles | 86.2% | 82.7% |
Bands with fewer than 30 tests for either bike are left out.
Harley-Davidson Flhtcui vs Harley-Davidson XL1200C FAQ
Which is more reliable, the Harley-Davidson Flhtcui or the Harley-Davidson XL1200C?
The Harley-Davidson Flhtcui passes its MOT first time more often than the Harley-Davidson XL1200C: 90.7% vs 88.4%, a 2.3-point lead. Adjusted for age, mileage and test class, the Harley-Davidson Flhtcui still comes out ahead: +7.1 points vs comparable bikes for the Harley-Davidson Flhtcui, +2.3 for the Harley-Davidson XL1200C. An MOT checks roadworthiness items, not engine or gearbox internals.
What does the Harley-Davidson Flhtcui fail its MOT on most?
Lights & signalling: 2.0% of Harley-Davidson Flhtcui MOT tests failed on it, then brakes (1.7%).
What does the Harley-Davidson XL1200C fail its MOT on most?
Lights & signalling: 2.5% of Harley-Davidson XL1200C MOT tests failed on it, then brakes (1.2%).
Which holds up better at high mileage, the Harley-Davidson Flhtcui or the Harley-Davidson XL1200C?
At 50k-60k miles the Harley-Davidson Flhtcui passes first time more often: 86.2% for the Harley-Davidson Flhtcui vs 82.7% for the Harley-Davidson XL1200C.
See each bike's full report (trend, mileage curve, failure breakdown and rivals) on its own page.