Data as of: DVSA MOT results to 2025
Harley-Davidson Fat Bob: MOT pass rate by registration year
Which Fat Bob years pass first time, and which fall short of the model's 87.5% average, from 3,762 DVSA tests.
Pass rate by registration year
Highest pass rate: 2016 (89.6% of 481 tests). Lowest: 2011 (80.2% of 91). Years more than two points below the model average: 2009, 2011.
| Registered | Tests | First-time pass | vs model (87.5%) |
|---|---|---|---|
| 2009 | 86 | 82.6% | -4.9 pp |
| 2010 | 65 | 86.2% | -1.3 pp |
| 2011 | 91 | 80.2% | -7.3 pp |
| 2013 | 296 | 88.5% | +1.0 pp |
| 2014 | 1,441 | 87.5% | +0.0 pp |
| 2015 | 1,143 | 87.1% | -0.4 pp |
| 2016 | 481 | 89.6% | +2.1 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
Questions
- Which Fat Bob years have the lowest MOT pass rate?
- 2009, 2011 registered examples pass first time less often than the Harley-Davidson Fat Bob overall (87.5%); the 2011 cohort is lowest at 80.2% from 91 tests.
- Which Fat Bob year has the highest MOT pass rate?
- 2016, at 89.6% of 481 first tests (2005–2025).
- How much does the Fat Bob pass rate vary by year?
- 9.4 percentage points between the highest (2016, 89.6%) and lowest (2011, 80.2%) 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: Harley-Davidson Fat Bob reliability, failures and mileage · ranked #1750 of 5428 models· other Harley-Davidson models: XLH 883, Flstf, Flstc, XL, XL1200C, XL883