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

Updated 05 September 2026.

9.4%fail rate

Suzuki B MOT failure rate

What a Suzuki B fails its MOT on, and the part that fixes each.

What it fails on, and why

Lamps & electrical20.0% 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.

Brakes7.5% 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.

Registration plate5.0% of failures

A missing, damaged, dirty or incorrectly-spaced number plate, or one using the wrong font, will fail. A replacement plate is inexpensive.

Tyres5.0% 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.

Other2.5% of failures

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

Steering2.5% of failures

Steering faults are typically worn track-rod ends or ball joints, play in the rack, or a split gaiter letting grease out and dirt in. Excessive free play at the wheel fails.

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.

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For the brakes failure: Suzuki B brake pads and discsShop Suzuki B brake pads and discs on Amazonaffiliate Find Suzuki B brake pads and discs on eBayaffiliate

For the registration plate failure: Suzuki B number plateShop Suzuki B number plate on Amazonaffiliate Find Suzuki B number plate on eBayaffiliate

For the tyres failure: Suzuki B tyresShop Suzuki B tyres on Amazonaffiliate Find Suzuki B tyres on eBayaffiliate

For the steering failure: Suzuki B steering track rod endsShop Suzuki B steering track rod ends on Amazonaffiliate Find Suzuki B steering track rod ends on eBayaffiliate

Other models

All Suzuki models MOT failure rates comparedRanked worst to best Suzuki Swift MOT failures23.4% failure rate Suzuki Alto MOT failures25.8% failure rate Ford Fiesta MOT failures27.1% failure rate

Questions and answers

What is the MOT failure rate of the Suzuki B?

It fails 9.4% of its MOT tests across the DVSA record, from 425 tests.

What do these cars fail their MOT on most?

The most common failure area is lamps & electrical, at 20.0% of this model's failures.