Pass rate over time
The CL450's first-time pass rate has risen 11.7 points since 2016, 85.7% to 97.4%.
Pass rate by mileage
A low-mileage CL450 passes first time 82.6% of the time; by 20k that's 96.0%.
First-time pass rate by odometer reading at test, 10,000-mile bands for this model. Mileage is the strongest reliability signal. See the full curve.
What fails on a CL450
| Component group | Share of defects | Defects | % of defects |
|---|---|---|---|
| steering and suspension |
|
10 | 32.3 |
| lighting and signalling |
|
9 | 29 |
| brakes |
|
5 | 16.1 |
| drive system |
|
4 | 12.9 |
| fuel and exhaust |
|
1 | 3.2 |
| body and structure |
|
1 | 3.2 |
| reg plates and vin |
|
1 | 3.2 |
Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.
How rivals compare
On first-time pass rate the CL450 beats 4 of its 4 closest rivals (KAWASAKI ER5, YAMAHA XV535, SUZUKI GS500).
Rivals share this bike's type and sit within ±30% of its engine capacity, ≥ 5,000 tests. Card colour = better/worse first-time pass rate than the CL450.
Pass rate by registration year
Best year to buy used: 1971 (87.1% pass). Weakest: 1972 (75.0%).
First-time pass rate by the year each bike was first registered (cohorts with ≥ 50 tests). Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years.