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

Updated 05 September 2026.

15.7%fail rate

Boom Street MOT failure rate

What a Boom Street fails its MOT on, and the part that fixes each.

What it fails on, and why

Lamps & electrical46.2% 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.

Brakes15.4% of failures

Brake failures cover worn pads and discs, an imbalance between wheels, corroded or scored discs, or a binding caliper. Braking efficiency is measured on a rolling road, so a spongy or pulling brake shows up as a low reading.

Tyres15.4% of failures

Tyres fail for tread below the 1.6mm legal limit across the central three-quarters, uneven or exposed-cord wear, or sidewall damage. The tester inspects all four; a single illegal tyre is a fail.

Suspension7.7% of failures

Suspension failures usually mean a worn or snapped coil spring, a leaking shock absorber, or play in a lower arm ball joint or bush. The tester checks for corrosion, fractures and excessive movement. A broken front spring is one of the most common failures on higher-mileage cars and is a straightforward replacement.

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: Boom Street headlight and indicator bulbsShop Boom Street headlight and indicator bulbs on Amazonaffiliate Find Boom Street headlight and indicator bulbs on eBayaffiliate

For the brakes failure: Boom Street brake pads and discsShop Boom Street brake pads and discs on Amazonaffiliate Find Boom Street brake pads and discs on eBayaffiliate

For the tyres failure: Boom Street tyresShop Boom Street tyres on Amazonaffiliate Find Boom Street tyres on eBayaffiliate

For the suspension failure: Boom Street suspension springs and shock absorbersShop Boom Street suspension springs and shock absorbers on Amazonaffiliate Find Boom Street suspension springs and shock absorbers on eBayaffiliate

Other models

Boom Low MOT failures11.1% failure rate Boom Trike MOT failures15.0% failure rate Boom Family MOT failures16.0% failure rate Ford Fiesta MOT failures27.1% failure rate

Questions and answers

What is the MOT failure rate of the Boom Street?

It fails 15.7% of its MOT tests across the DVSA record, from 83 tests.

What do these cars fail their MOT on most?

The most common failure area is lamps & electrical, at 46.2% of this model's failures.