Yamaha XS850 Reliability, MOT Pass Rate & Common Faults
Free Yamaha XS850 car check
Is the Yamaha XS850 reliable? We analysed 927 real MOT tests across 165 vehicles to find out.
Got a specific Yamaha XS850? Enter the reg for a free check:
The Yamaha XS850 is above average for reliability based on real UK MOT data. Common problems include roller brake test indicates a binding brake, shock absorber seal failed and leaking oil and exhaust is leaking and excessively noisey. Here's everything you need to know before buying a used Yamaha XS850.
Yamaha XS850 Number Plates
Number plates registered to a Yamaha XS850. Click on any registration for full vehicle details — including MOT history, mileage records, previous owners and damage history.
Yamaha XS850 MOT Pass Rate by Year
How likely is a Yamaha XS850 to pass its MOT? Here's the pass rate for each registration year, newest first.
Yamaha XS850 Problems — What Goes Wrong?
The most common reasons a Yamaha XS850 fails its MOT, ranked by how often they occur. Check for these problems before you buy.
Yamaha XS850 Mileage — What's Normal?
How many miles does a typical Yamaha XS850 owner drive per year? Use this to check if a car you're looking at has suspiciously low or high mileage.
Yamaha XS850 MOT Data by Registration Year
Full breakdown of pass rate and mileage for each year. Use this to compare the Yamaha XS850 year you're looking at.
| Year | Tests | Pass Rate | Low Mi. | Typical Mi. | High Mi. |
|---|---|---|---|---|---|
| 1984 | 91 | 81.3% | 23,059 | 33,448 | 43,151 |
| 1983 | 53 | 81.1% | 42,471 | 59,178 | 63,130 |
| 1981 | 154 | 90.9% | 31,749 | 43,510 | 65,335 |
| 1980 | 297 | 86.5% | 28,323 | 35,122 | 43,579 |
How Long Does a Yamaha XS850 Last?
Based on 165 Yamaha XS850 vehicles on UK roads.
Yamaha XS850 Mileage Distribution
Total mileage recorded across all Yamaha XS850 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 XS850
Based on MOT pass rates across all registration years with sufficient test data.
90.9% MOT pass rate from 154 tests
81.1% MOT pass rate from 53 tests
The best year to buy a used Yamaha XS850 is 1981, which has the highest MOT pass rate at 90.9% across 154 tests. The 1983 model year has the lowest pass rate at 81.1% — if you're looking at one from that year, budget for potential repairs and get a thorough pre-purchase inspection.
How Does the Yamaha XS850 Compare?
MOT pass rates compared to similar models. Click any model for the full breakdown.
| Model | Pass Rate | Tests | Typical Mileage | Lifespan |
|---|---|---|---|---|
| Yamaha XS850 THIS CAR | 83.9% | 927 | 35,287 mi | 46 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 |
| Kia Picanto Titanium Edition Auto | 92% | 1,158 | 14,477 mi | — yrs |
Compared to the Yamaha Yzf R1 (86.5% pass rate) and the Yamaha FZS600 (85.0% pass rate), the Yamaha XS850 trails behind on MOT reliability.
Found a Yamaha XS850 you like?
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 XS850Should you buy a used Yamaha XS850?
The Yamaha XS850 has an overall MOT pass rate of 83.9% across 927 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 XS850 are roller brake test indicates a binding brake (21 recorded failures), shock absorber seal failed and leaking oil (16), and exhaust is leaking and excessively noisey (8). 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.
A typical Yamaha XS850 owner drives around 314 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 XS850 models stay on UK roads for around 46 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.