Know Your MOT

MOT failure rate and common problems for the Triumph Steet, and how to check your own car by registration.

Updated 05 September 2026.

9.0%fail rate

Triumph Steet MOT failure rate

What a Triumph Steet fails its MOT on, and the part that fixes each.

What it fails on, and why

Lamps & electrical22.2% of failures

Lighting is the single most common MOT failure and the cheapest to put right. A blown headlight, brake-light or number-plate bulb, a cracked lens, or a headlamp beam that points too high or low will all fail. Most are a two-minute bulb swap.

Other11.1% of failures

This covers a range of smaller items, from a non-working horn to a warning light left on.

The parts that fix each

If your car has just failed, you have 10 working days to fix the items and get a free partial retest. Confirm the exact fitment against your registration or VIN before buying.

For the lamps & electrical failure: Triumph Steet headlight and indicator bulbsShop Triumph Steet headlight and indicator bulbs on AmazonaffiliateFind Triumph Steet headlight and indicator bulbs on eBayaffiliate

Other models

All Triumph models MOT failure rates comparedRanked worst to bestTriumph Bonneville MOT failures9.8% failure rateTriumph Tiger MOT failures9.2% failure rateFord Fiesta MOT failures27.1% failure rate

Questions and answers

What is the MOT failure rate of the Triumph Steet?

It fails 9.0% of its MOT tests across the DVSA record, from 100 tests.

What do these cars fail their MOT on most?

The most common failure area is lamps & electrical, at 22.2% of this model's failures.