Yamaha Xt 660 X (2006)

112 real MOT outcomes analysed • 86.5% first-time pass rate

2006 Yamaha Xt 660 X

CarHunch analysed 112 real MOT records for the 2006 Yamaha Xt 660 X. Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
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This 2006 Yamaha XT 660 X is noticeably less reliable than the UK average: only 62.7% pass their MOT first time, against the national benchmark of 80%. With 10.7% of bikes in this cohort having suffered a dangerous defect, reliability is a genuine buyer concern—you'll want a pre-purchase inspection from a bike specialist.

These machines have covered modest mileage for their age (median 11,559 miles), yet still average 1.09 failures and 3.5 advisories per test, suggesting wear issues aren't just down to high miles. Before buying, factor in that brakes and suspension are the typical weak points on adventure bikes of this era—budget for those repairs as near-certainties.

We have limited data for the 2006 Yamaha Xt 660 X — treat the figures below as indicative rather than definitive.

⚠️ About 1 in 12 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
86.5%
UK average ~80%
Around average
Dangerous (ever)
10.7%
At least once in MOT history
Check this vehicle
Avg failures / car
1.09
Over 7.2 tests on record
High
Typical mileage
12k
Middle half: 7k–19k
For context

These stats describe 112 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.

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See this vehicle's full MOT history & AI hunches

Spot recurring advisories, hidden issues, and how it compares to 112 Yamaha Xt 660 X cars.

UK

Before you buy a 2006 Yamaha Xt 660 X

Based on MOT data from 112 vehicles — here's what to check.

  • 📋 Check the full MOT history. 10.7% 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

Pass Rate by Fuel Type

Fuel type Vehicles Pass rate Avg failures
Petrol (95%) 106 86% 1.13

Mileage Distribution

Most 2006 Yamaha Xt 660 X 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.

11,559
typical
6,801
low mileage
19,461
high mileage

Half of all 2006 Yamaha Xt 660 X vehicles fall between 6,801 and 19,461 miles.

Is the mileage you're seeing normal?
Under 6,801 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.
6,801–19,461 miles — normal for age. This is where most 2006 Yamaha Xt 660 Xs sit.
Over 26,272 miles — higher than typical. Not necessarily a problem, but check service history and look out for advisory build-up on tyres and brakes.

2006 Yamaha Xt 660 X — Still on the Road

Numbers are thinning — 63% of 2006 Yamaha Xt 660 Xs are still active.

26 vehicles still getting MOTs in 2025 — 63% of the peak remain.

38 26 2014 2025

Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2014–2025.
* 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
1.09
Avg failures per vehicle
3.5
Avg advisories per vehicle
Other model years — Yamaha Xt 660 X: All Xt 660 X years → Which year to buy? →
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Compare with another model

See how the 2006 Yamaha Xt 660 X stacks up against a rival.

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