Harley Davidson Fat Bob (2015)

196 real MOT outcomes analysed • 89.7% first-time pass rate

2015 Harley Davidson Fat Bob

CarHunch analysed 196 real MOT records for the 2015 Harley Davidson Fat Bob. Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
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The 2015 Fat Bob passes its MOT first time in 89.7% of cases, well above the UK average of 80%, which is a strong reliability signal—though the 28.1% of these bikes that have recorded a dangerous defect is worth noting, suggesting some examples have experienced serious safety issues. Petrol versus diesel breakdowns aren't relevant here, but the real story is that these are relatively low-mileage machines: the average sits at just 10,770 miles for a nine-year-old bike, indicating most owners ride sparingly rather than commute hard on them.

When failures do occur, they're modest in number (0.84 per vehicle), but advisories are frequent at 3.2 per test, pointing to wear items and minor maintenance needs rather than structural problems. If you're considering a Fat Bob, inspect the service history carefully, ask specifically about any past dangerous defect repairs, and budget for routine consumables—but the high pass rate means a well-maintained example will be reliable.

We have limited data for the 2015 Harley Davidson Fat Bob — treat the figures below as indicative rather than definitive.

⚠️ Over 1 in 5 of these vehicles have had a dangerous MOT failure at some point — usually tyres or brakes, and often a one-off issue rather than a persistent problem. The group stats won't tell you which one you're looking at.
First-time pass
89.7%
UK average ~80%
Better than average
Dangerous (ever)
28.1%
At least once in MOT history
Check this vehicle
Avg failures / car
0.84
Over 7.2 tests on record
Moderate
Typical mileage
9k
Middle half: 6k–13k
For context

These stats describe 196 vehicles as a group. The specific vehicle you're looking at could be the one good example or the one outlier. Run its registration to find out.

Watch for defects — worth knowing

See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 196 Harley Davidson Fat Bob cars.

UK

Before you buy a 2015 Harley Davidson Fat Bob

Based on MOT data from 196 vehicles — here's what to check.

  • 📋 Check the full MOT history. 28.1% of these vehicles have had a dangerous defect recorded - recurring advisories often signal problems years before they become failures.
    Search the reg on CarHunch for the full MOT history, reliability stats and a free AI-powered analysis of that exact vehicle.
  • 🔍 Brake pipes, sills and subframes are the key areas on a vehicle this age — structural rust is hard to spot without getting underneath. A mechanic will check all of this before you commit, and give you a concrete basis to negotiate on price. Inspection ClickMechanic
  • 📄 Outstanding finance, insurance write-offs and clocking won't appear in the MOT records — a dedicated history check covers all of this. Our link gets you 20% off automatically. History carVertical Get 20% off via CarHunch

Mileage Distribution

Most 2015 Harley Davidson Fat Bob vehicles sit in the blue band. If the vehicle you're looking at is outside it, it's either unusually low or high mileage for its age.

9,461
typical
6,076
low mileage
13,037
high mileage

Half of all 2015 Harley Davidson Fat Bob vehicles fall between 6,076 and 13,037 miles.

Is the mileage you're seeing normal?
Under 6,076 miles — lower than most. Could be great, or could be a vehicle that rarely moved. Check test frequency and mileage progression in the MOT history.
6,076–13,037 miles — normal for age. This is where most 2015 Harley Davidson Fat Bobs sit.
Over 17,599 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2015 Harley Davidson Fat Bob — Still on the Road

Most 2015 Harley Davidson Fat Bobs are still being driven.

Strong survival — 142 vehicles still getting MOTs in 2025, 85% of the peak.

164 142 2018 2025

Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2018–2025.
* The 2020 dip reflects the government's COVID-19 MOT exemption, which allowed certificates to be extended by six months — fewer tests were conducted that year.

MOT History Averages

7.2
Avg MOT tests per vehicle
0.84
Avg failures per vehicle
3.2
Avg advisories per vehicle
Other model years — Harley Davidson Fat Bob: All Fat Bob years → Which year to buy? →
2014

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Compare with another model

See how the 2015 Harley Davidson Fat Bob stacks up against a rival.

Watch for defects — worth knowing