Honda CBR 600 RR-4: MOT pass rate by registration year

Which CBR 600 RR-4 years pass first time, and which fall short of the model's 81.4% average, from 5,335 DVSA tests.

2004

highest-passing year · 81.7%

2006

lowest-passing year · 76.3%

5.4pp

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: 2004 (81.7% of 4,749 tests). Lowest: 2006 (76.3% of 59). Years more than two points below the model average: 2005, 2006.

Registered	Tests	First-time pass	vs model (81.4%)
2004	4,749	81.7%	+0.3 pp
2005	481	78.6%	-2.8 pp
2006	59	76.3%	-5.1 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 · 2007–2025

Questions

Which CBR 600 RR-4 years have the lowest MOT pass rate?: 2005, 2006 registered examples pass first time less often than the Honda CBR 600 RR-4 overall (81.4%); the 2006 cohort is lowest at 76.3% from 59 tests.
Which CBR 600 RR-4 year has the highest MOT pass rate?: 2004, at 81.7% of 4,749 first tests (2005–2025).
How much does the CBR 600 RR-4 pass rate vary by year?: 5.4 percentage points between the highest (2004, 81.7%) and lowest (2006, 76.3%) 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: Honda CBR 600 RR-4 reliability, failures and mileage · ranked #3291 of 5428 models· other Honda models: CBR600F, CBR900RR, CBR1100XX, CB500, C90, VFR800 Fi