Yamaha XT 660 X Reliability, MOT Pass Rate & Common Faults
Free Yamaha XT 660 X car check
Is the Yamaha XT 660 X reliable? We analysed 7,997 real MOT tests across 810 vehicles to find out.
Got a specific Yamaha XT 660 X? Enter the reg for a free check:
The Yamaha XT 660 X is above average for reliability based on real UK MOT data. Common problems include tyre tread depth is below minimum requirements of 1.0mm, brake pad(s) less than 1.5 mm thick and wheel bearings have excessive free play. Here's everything you need to know before buying a used Yamaha XT 660 X.
Yamaha XT 660 X Number Plates
Number plates registered to a Yamaha XT 660 X. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Yamaha XT 660 X MOT Pass Rate by Year
How likely is a Yamaha XT 660 X to pass its MOT? Here's the pass rate for each registration year, newest first.
Yamaha XT 660 X Problems — What Goes Wrong?
The most common reasons a Yamaha XT 660 X fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Yamaha XT 660 X Common Faults & Problems
These are the most common serious faults found on Yamaha XT 660 X models during MOT testing — flagged as dangerous or major failures that need immediate attention.
Yamaha XT 660 X Mileage — What's Normal?
How many miles does a typical Yamaha XT 660 X owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Yamaha XT 660 X MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Yamaha XT 660 X year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 2013 | 221 | 91.9% | 3,850 | 6,935 | 13,666 |
| 2012 | 252 | 90.1% | 4,454 | 9,125 | 15,641 |
| 2011 | 364 | 91.8% | 5,739 | 9,600 | 17,460 |
| 2010 | 458 | 86.2% | 6,285 | 9,826 | 16,834 |
| 2009 | 899 | 88.3% | 5,769 | 10,828 | 17,324 |
| 2008 | 860 | 85.8% | 4,882 | 10,064 | 17,800 |
| 2007 | 1,036 | 85.5% | 5,429 | 10,588 | 19,175 |
| 2006 | 780 | 84.5% | 6,175 | 11,588 | 19,771 |
| 2005 | 1,647 | 83.2% | 7,198 | 13,254 | 21,939 |
| 2004 | 1,318 | 84.1% | 8,284 | 14,708 | 24,146 |
How Long Does a Yamaha XT 660 X Last?
Based on 810 Yamaha XT 660 X vehicles on UK roads.
Yamaha XT 660 X Mileage Distribution
Total mileage recorded across all Yamaha XT 660 X MOT tests. If the car you're looking at is above the 75th percentile, it's done more miles than most.
Best Year to Buy a Used Yamaha XT 660 X
Based on MOT pass rates across all registration years with sufficient test data.
91.9% MOT pass rate from 221 tests
83.2% MOT pass rate from 1,647 tests
The best year to buy a used Yamaha XT 660 X is 2013, which has the highest MOT pass rate at 91.9% across 221 tests. The 2005 model year has the lowest pass rate at 83.2% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Yamaha XT 660 X Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Yamaha XT 660 X THIS CAR | 85.9% | 7,997 | 11,472 mi | 22 yrs |
| Yamaha Yzf R1 | 86.5% | 175,313 | 16,232 mi | 28 yrs |
| Yamaha FZS600 | 85% | 157,659 | 22,466 mi | 28 yrs |
| Yamaha XJR1300 | 88.8% | 107,128 | 16,836 mi | 27 yrs |
| Volkswagen T2 | 68.4% | 8,813 | 49,068 mi | 60 yrs |
Compared to the Yamaha Yzf R1 (86.5% pass rate) and the Yamaha FZS600 (85.0% pass rate), the Yamaha XT 660 X sits in the middle of the pack on MOT reliability.
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Run a full vehicle history check on the specific car. See finance, stolen, write-off, mileage and MOT data for that exact vehicle.
Check a specific Yamaha XT 660 XShould you buy a used Yamaha XT 660 X?
The Yamaha XT 660 X has an overall MOT pass rate of 85.9% across 7,997 real MOT tests — comfortably above the UK average, which puts it among the more reliable models on UK roads.
The most common problems on the Yamaha XT 660 X are tyre tread depth is below minimum requirements of 1.0mm (112 recorded failures), brake pad(s) less than 1.5 mm thick (44), and wheel bearings have excessive free play (35). These are the faults most likely to cause an MOT failure on this model, so check for them carefully on any test drive or pre-purchase inspection. Many are wear-and-tear items that can be budgeted for, but a car that's already failing on multiple fronts may signal neglected maintenance.
On the safety side, the most frequently flagged dangerous fault is tyre tread depth is below minimum requirements of 1.0mm. Dangerous faults cause an immediate MOT failure and mean the vehicle is not roadworthy until repaired. If you're viewing a Yamaha XT 660 X with an expired or recently passed MOT, ask the seller whether any dangerous faults were found and fixed during the last test.
A typical Yamaha XT 660 X owner drives around 812 miles per year. If the car you're looking at is significantly above this, expect more wear on suspension, brakes and tyres. If it's well below, the vehicle may have been sitting unused — check for perished rubber, corroded discs and stale fluids.
In terms of longevity, most Yamaha XT 660 X models stay on UK roads for around 22 years — a strong showing that suggests solid build quality and readily available parts. If you're buying one that's already approaching that window, the data suggests it has plenty of life left provided it's been maintained.
Before committing to a purchase, we recommend running a full vehicle history check on the specific car. This will reveal any outstanding finance, stolen markers, write-off history and mileage discrepancies that the seller may not disclose — and that the MOT data alone can't tell you.