Triumph Tr4
From 330 MOT tests. Above average for its class.
Common MOT failure categories
What goes wrong?
The most common MOT failure reasons are brakes imbalance across an axle such that the braking effort from any wheel is less than 70% of the maximum effort recorded from the other wheel on the same axle., steering rack gaiter or ball joint dust cover missing or no longer prevents the ingress of dirt etc and the aim of a headlamp is not within limits laid down in the requirements. The top issue, brakes imbalance across an axle such that the braking effort from any wheel is less than 70% of the maximum effort recorded from the other wheel on the same axle., caused 9 failures in 2024. If you need repairs before retesting, sites like BookMyGarage let you compare local prices.
| brakes imbalance across an axle such that the braking effort from any wheel is less than 70% of the maximum effort recorded from the other wheel on the same axle. | 9 |
| steering rack gaiter or ball joint dust cover missing or no longer prevents the ingress of dirt etc | 8 |
| the aim of a headlamp is not within limits laid down in the requirements | 6 |
| parking brake efficiency below minimum requirement | 5 |
| windscreen washers not working or not providing sufficient fluid to clear the windscreen | 5 |
| a lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning | 4 |
| a suspension pin, bush or joint excessively worn | 3 |
| stop lamps all missing or inoperative | 3 |
| a suspension joint dust cover missing or no longer prevents the ingress of dirt etc | 3 |
| a headlamp or light source missing, inoperative or more than ½ not functioning in the case of led | 3 |
How serious are these failures?
Not all MOT failures are equal. 34.7% of failures are serious: 34.7% are safety issues (brakes, steering, tyre damage) and 0% could actually leave you stranded. That's close to the 44.4% average across all models. When it does fail, the average repair bill is around £97.
Typical mileage
Half of all Tr4s tested had between 14,717 and 62,762 miles on the clock. Relatively low mileage overall. Many are still fairly young.
At 34,187 median miles, the Tr4 has 0.034 failures per 10,000 miles driven.
Other Triumph models
| Triumph Bonneville | 90.9% |
| Triumph Tiger | 91.6% |
| Triumph Sprint | 87.1% |
| Triumph Daytona | 85.9% |
| Triumph Speed Triple | 88.7% |
Common questions
What is the Triumph Tr4 MOT pass rate?
The Triumph Tr4 has a 88.5% MOT pass rate based on 330 real MOT tests. This is above the national average.
What are common MOT failures on a Triumph Tr4?
The most common MOT failure on the Triumph Tr4 is brakes imbalance across an axle such that the braking effort from any wheel is less than 70% of the maximum effort recorded from the other wheel on the same axle., which caused 9 failures. Other common issues include steering rack gaiter or ball joint dust cover missing or no longer prevents the ingress of dirt etc.
What is the typical mileage of a Triumph Tr4 at MOT?
The median mileage at MOT for a Triumph Tr4 is 34,187 miles. The middle 50% of vehicles tested have between 14,717 and 62,762 miles.
Buying a used Tr4?
Start with the free tools. Look up the specific vehicle's MOT history on GOV.UK The mileage at each test will show if it's been wound back, and the advisory history tells you what's wearing. Cross-reference that against the typical failures above to see if anything looks unusual for this model.
The free data won't tell you about outstanding finance, theft markers, or write-off history. For that, you need a vehicle history check This is especially important on a private sale where you have fewer legal protections.
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MOT data from DVSA anonymised test results, 2024 test year. Fleet data from DfT vehicle licensing statistics. Crown copyright, OGL v3.0. MOT pass rates are statistical summaries of test outcomes, not assessments of individual vehicle safety or condition. Always inspect a vehicle and check its full MOT history before purchasing. See terms of use.