BIKERELIABILITY Reg check
League table/ YAMAHA/ 600/By year
Registration-year report · 2005–2025

Data as of: DVSA MOT results to 2025

Yamaha 600: MOT pass rate by registration year

Which 600 years pass first time, and which fall short of the model's 73.7% average, from 761 DVSA tests.

1995
highest-passing year · 82.1%
1998
lowest-passing year · 60.0%
22.1pp
spread across 6 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: 1995 (82.1% of 95 tests). Lowest: 1998 (60.0% of 60). Years more than two points below the model average: 1997, 1998.

56%71%87%1990: 75.4% pass (61 tests)1995: 82.1% pass (95 tests)1996: 72.6% pass (146 tests)1997: 69.4% pass (85 tests)1998: 60.0% pass (60 tests)2000: 77.8% pass (54 tests)199019972000
RegisteredTestsFirst-time passvs model (73.7%)
1990 61 75.4% +1.7 pp
1995 95 82.1% +8.4 pp
1996 146 72.6% -1.1 pp
1997 85 69.4% -4.3 pp
1998 60 60.0% -13.7 pp
2000 54 77.8% +4.1 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 · 2006–2017
49%71%92%2006: 83.3% pass (66 tests)2007: 79.6% pass (49 tests)2008: 72.9% pass (59 tests)2009: 68.8% pass (48 tests)2010: 67.9% pass (56 tests)2011: 76.6% pass (47 tests)2012: 56.5% pass (46 tests)2013: 64.7% pass (51 tests)2014: 71.7% pass (53 tests)2015: 84.6% pass (39 tests)2016: 72.1% pass (43 tests)2017: 70.6% pass (34 tests)20062017

Questions

Which 600 years have the lowest MOT pass rate?
1997, 1998 registered examples pass first time less often than the Yamaha 600 overall (73.7%); the 1998 cohort is lowest at 60.0% from 60 tests.
Which 600 year has the highest MOT pass rate?
1995, at 82.1% of 95 first tests (2005–2025). Years more than two points above the model average: 1995, 2000.
How much does the 600 pass rate vary by year?
22.1 percentage points between the highest (1995, 82.1%) and lowest (1998, 60.0%) 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: Yamaha 600 reliability, failures and mileage · ranked #4432 of 5428 models· other Yamaha models: YZF-R1, YZF-R6, FZS600, YBR 125, XJR1300, FZ6