Kawasaki ZX 600 RBF: MOT pass rate by registration year

Which ZX 600 RBF years pass first time, and which fall short of the model's 85.1% average, from 612 DVSA tests.

2013

highest-passing year · 87.9%

2011

lowest-passing year · 84.0%

3.9pp

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: 2013 (87.9% of 99 tests). Lowest: 2011 (84.0% of 150).

Registered	Tests	First-time pass	vs model (85.1%)
2011	150	84.0%	-1.1 pp
2012	354	85.0%	-0.1 pp
2013	99	87.9%	+2.8 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 · 2015–2025

Questions

Which ZX 600 RBF years have the lowest MOT pass rate?: none: no registration year of the Kawasaki ZX 600 RBF falls more than two points under the model's 85.1% overall pass rate.
Which ZX 600 RBF year has the highest MOT pass rate?: 2013, at 87.9% of 99 first tests (2005–2025).
How much does the ZX 600 RBF pass rate vary by year?: 3.9 percentage points between the highest (2013, 87.9%) and lowest (2011, 84.0%) 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: Kawasaki ZX 600 RBF reliability, failures and mileage · ranked #2469 of 5428 models· other Kawasaki models: ZX-6R, ZX-9R, ZZR600, ER5, ZZ-R1100, ZX