Know Your MOT

MOT failure rate and common problems for the Sunbeam 14/40, and how to check your own car by registration.

Updated 05 September 2026.

8.5%fail rate

Sunbeam 14/40 MOT failure rate

What a Sunbeam 14/40 fails its MOT on, and the part that fixes each.

What it fails on, and why

Brakes40.0% 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.

Other20.0% of failures

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

Exhaust & emissions20.0% of failures

Exhaust failures cover leaks, insecure mountings and emissions over the limit. A blowing exhaust, a failed lambda reading or a diesel that smokes beyond the limit will fail.

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 brakes failure: Sunbeam 14/40 brake pads and discsShop Sunbeam 14/40 brake pads and discs on AmazonaffiliateFind Sunbeam 14/40 brake pads and discs on eBayaffiliate
For the exhaust & emissions failure: Sunbeam 14/40 exhaustShop Sunbeam 14/40 exhaust on AmazonaffiliateFind Sunbeam 14/40 exhaust on eBayaffiliate

Other models

Sunbeam Alpine MOT failures20.3% failure rateSunbeam Rapier MOT failures18.2% failure rateSunbeam Tiger MOT failures13.3% failure rateFord Fiesta MOT failures27.1% failure rate

Questions and answers

What is the MOT failure rate of the Sunbeam 14/40?

It fails 8.5% of its MOT tests across the DVSA record, from 59 tests.

What do these cars fail their MOT on most?

The most common failure area is brakes, at 40.0% of this model's failures.