BIKERELIABILITY Reg check
Registration-year report · 2005–2025

Data as of: DVSA MOT results to 2025

Yamaha Diversion: MOT pass rate by registration year

Which Diversion years pass first time, and which fall short of the model's 78.0% average, from 5,147 DVSA tests.

2009
highest-passing year · 91.7%
1991
lowest-passing year · 69.6%
22.1pp
spread across 10 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: 2009 (91.7% of 121 tests). Lowest: 1991 (69.6% of 115). Years more than two points below the model average: 1991, 1993, 1994.

65%81%96%1991: 69.6% pass (115 tests)1992: 76.3% pass (469 tests)1993: 73.3% pass (550 tests)1994: 73.3% pass (569 tests)1995: 80.4% pass (1,035 tests)1996: 78.5% pass (957 tests)1997: 79.0% pass (749 tests)1998: 81.0% pass (174 tests)2009: 91.7% pass (121 tests)2010: 84.1% pass (252 tests)199119962010
RegisteredTestsFirst-time passvs model (78.0%)
1991 115 69.6% -8.4 pp
1992 469 76.3% -1.7 pp
1993 550 73.3% -4.7 pp
1994 569 73.3% -4.7 pp
1995 1,035 80.4% +2.4 pp
1996 957 78.5% +0.5 pp
1997 749 79.0% +1.0 pp
1998 174 81.0% +3.0 pp
2009 121 91.7% +13.7 pp
2010 252 84.1% +6.1 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 · 2005–2025
69%80%91%2005: 87.8% pass (82 tests)2006: 80.7% pass (409 tests)2007: 77.9% pass (375 tests)2008: 77.1% pass (340 tests)2009: 73.4% pass (334 tests)2010: 76.6% pass (321 tests)2011: 76.0% pass (312 tests)2012: 78.7% pass (329 tests)2013: 73.7% pass (354 tests)2014: 77.2% pass (347 tests)2015: 80.4% pass (326 tests)2016: 79.8% pass (272 tests)2017: 78.5% pass (233 tests)2018: 86.9% pass (168 tests)2019: 79.2% pass (183 tests)2020: 73.2% pass (123 tests)2021: 77.3% pass (154 tests)2022: 81.3% pass (150 tests)2023: 73.1% pass (134 tests)2024: 79.8% pass (94 tests)2025: 79.4% pass (107 tests)20052025

Questions

Which Diversion years have the lowest MOT pass rate?
1991, 1993, 1994 registered examples pass first time less often than the Yamaha Diversion overall (78.0%); the 1991 cohort is lowest at 69.6% from 115 tests.
Which Diversion year has the highest MOT pass rate?
2009, at 91.7% of 121 first tests (2005–2025). Years more than two points above the model average: 1995, 1998, 2009, 2010.
How much does the Diversion pass rate vary by year?
22.1 percentage points between the highest (2009, 91.7%) and lowest (1991, 69.6%) 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 Diversion reliability, failures and mileage · ranked #3913 of 5428 models· other Yamaha models: YZF-R1, YZF-R6, FZS600, YBR 125, XJR1300, FZ6