BIKERELIABILITY Reg check
Registration-year report · 2005–2025

Data as of: DVSA MOT results to 2025

Yamaha XT660R: MOT pass rate by registration year

Which XT660R years pass first time, and which fall short of the model's 86.9% average, from 7,787 DVSA tests.

2013
highest-passing year · 91.5%
2004
lowest-passing year · 84.1%
7.4pp
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: 2013 (91.5% of 165 tests). Lowest: 2004 (84.1% of 953). Years more than two points below the model average: 2004, 2010.

83%88%93%2004: 84.1% pass (953 tests)2005: 85.7% pass (781 tests)2006: 85.8% pass (1,342 tests)2007: 88.9% pass (1,719 tests)2008: 86.8% pass (853 tests)2009: 87.5% pass (986 tests)2010: 84.8% pass (316 tests)2011: 90.8% pass (348 tests)2012: 87.4% pass (247 tests)2013: 91.5% pass (165 tests)200420092013
RegisteredTestsFirst-time passvs model (86.9%)
2004 953 84.1% -2.8 pp
2005 781 85.7% -1.2 pp
2006 1,342 85.8% -1.1 pp
2007 1,719 88.9% +2.0 pp
2008 853 86.8% -0.1 pp
2009 986 87.5% +0.6 pp
2010 316 84.8% -2.1 pp
2011 348 90.8% +3.9 pp
2012 247 87.4% +0.5 pp
2013 165 91.5% +4.6 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
83%87%91%2007: 87.4% pass (87 tests)2008: 87.3% pass (158 tests)2009: 86.3% pass (293 tests)2010: 84.3% pass (428 tests)2011: 85.0% pass (487 tests)2012: 87.1% pass (573 tests)2013: 86.6% pass (576 tests)2014: 84.6% pass (586 tests)2015: 86.3% pass (585 tests)2016: 87.4% pass (595 tests)2017: 89.5% pass (553 tests)2018: 84.0% pass (405 tests)2019: 89.7% pass (380 tests)2020: 87.9% pass (297 tests)2021: 88.6% pass (420 tests)2022: 87.4% pass (388 tests)2023: 89.5% pass (389 tests)2024: 88.7% pass (275 tests)2025: 84.5% pass (303 tests)20072025

Questions

Which XT660R years have the lowest MOT pass rate?
2004, 2010 registered examples pass first time less often than the Yamaha XT660R overall (86.9%); the 2004 cohort is lowest at 84.1% from 953 tests.
Which XT660R year has the highest MOT pass rate?
2013, at 91.5% of 165 first tests (2005–2025). Years more than two points above the model average: 2011, 2013.
How much does the XT660R pass rate vary by year?
7.4 percentage points between the highest (2013, 91.5%) and lowest (2004, 84.1%) 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 XT660R reliability, failures and mileage · ranked #1937 of 5428 models· other Yamaha models: YZF-R1, YZF-R6, FZS600, YBR 125, XJR1300, FZ6