Data as of: DVSA MOT results to 2025
Yamaha XT660: MOT pass rate by registration year
Which XT660 years pass first time, and which fall short of the model's 86.4% average, from 926 DVSA tests.
Pass rate by registration year
Highest pass rate: 2005 (90.2% of 61 tests). Lowest: 2004 (76.2% of 63). Years more than two points below the model average: 2004, 2006.
| Registered | Tests | First-time pass | vs model (86.4%) |
|---|---|---|---|
| 2004 | 63 | 76.2% | -10.2 pp |
| 2005 | 61 | 90.2% | +3.8 pp |
| 2006 | 84 | 83.3% | -3.1 pp |
| 2007 | 98 | 89.8% | +3.4 pp |
| 2008 | 165 | 88.5% | +2.1 pp |
| 2009 | 117 | 89.7% | +3.3 pp |
| 2010 | 119 | 89.9% | +3.5 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
Questions
- Which XT660 years have the lowest MOT pass rate?
- 2004, 2006 registered examples pass first time less often than the Yamaha XT660 overall (86.4%); the 2004 cohort is lowest at 76.2% from 63 tests.
- Which XT660 year has the highest MOT pass rate?
- 2005, at 90.2% of 61 first tests (2005–2025). Years more than two points above the model average: 2005, 2007, 2008, 2009, 2010.
- How much does the XT660 pass rate vary by year?
- 14.0 percentage points between the highest (2005, 90.2%) and lowest (2004, 76.2%) 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 XT660 reliability, failures and mileage · ranked #2091 of 5428 models· other Yamaha models: YZF-R1, YZF-R6, FZS600, YBR 125, XJR1300, FZ6