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Triumph TR4 MOT Check

MOT pass rates, common failures, and reliability data for the Triumph TR4. Check any TR4 by registration number below.

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88.8%

Avg Pass Rate

-1.6%

vs Triumph Avg

2

Year Ranges

Excellent

Reliability

Triumph TR4 — MOT Reliability Overview

The Triumph TR4 has an average MOT pass rate of 88.8%, which is 1.6 percentage points below the Triumph brand average of 90.4%. This is a strong result, indicating that the TR4 is well-engineered and tends to age well mechanically. Owners can expect fewer surprises at MOT time.

Before buying a used Triumph TR4, we recommend checking the full MOT history, write-off status, outstanding finance, and stolen vehicle status. These checks can be done for free using the registration number.

MOT Pass Rate by Year

How the Triumph TR4 performs at MOT across different model years.

1990

Based on 30 vehicles

90.0%Excellent
Triumph average: 90.4%
Dangerous Defects

0.0%

Retest Rate

8.3%

0

Based on 252 vehicles

87.7%Excellent
Triumph average: 90.4%
Mileage at 5yr

42k mi

Where Failures Occur

The areas of the vehicle most commonly flagged during MOT inspections.

Nearside

16.7%

Front Upper

3.3%

Front Lower

3.3%

Other Triumph Models

Compare MOT reliability across Triumph models.

Triumph TR7

100.0% pass rate

Triumph Dolomite

91.7% pass rate

Triumph GT6

95.5% pass rate

Triumph Bonneville T100 Bud Ekins

100.0% pass rate

Triumph Trophy 3

100.0% pass rate

Triumph Sprint Rs

84.4% pass rate

Useful MOT Guides

Common MOT Failures

The most common reasons UK vehicles fail their MOT — and how to prepare.

MOT Checklist

Pre-MOT checklist to improve your chances of passing first time.

Advisory vs Failure

Understanding the difference between MOT advisories and failures.

See detailed fault analysis for Triumph TR4

Triumph TR4 — Frequently Asked Questions

Common questions about the Triumph TR4 MOT and reliability.

What is the MOT pass rate for the Triumph TR4?
The average MOT pass rate for the Triumph TR4 is 88.8% compared to the Triumph average of 90.4%. Pass rates vary by year — check the year-by-year breakdown on this page for details.
What are the most common MOT failures on a Triumph TR4?
Check the detailed breakdown on this page for specific failure data by year range.
Is the Triumph TR4 reliable?
With an average MOT pass rate of 88.8%, the Triumph TR4 is rated as "Excellent" for reliability. This is a strong result suggesting good build quality and fewer common defects.
How do I check the MOT history of a Triumph TR4?
Enter the vehicle's registration number in the search box at the top of this page. You will instantly see the complete MOT history including every test result, mileage readings, advisories, and dangerous defects — completely free.
What mileage should I expect on a Triumph TR4?
Typical mileage for the Triumph TR4: 42,106 miles at 5 years. Use these benchmarks when evaluating a used TR4 to spot vehicles with unusually high or low mileage.

Check Your Triumph TR4's MOT History

Enter the registration number for the full MOT history — free and instant.

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