21.9%fail rate

Austin Allegro Sdl common MOT failures and failure rate

What a Austin Allegro Sdl fails its MOT on, from real DVSA test data, and the part that resolves each item.

Based on 73 MOT tests in DVSA data.

About 21.9% of MOT tests recorded on the Austin Allegro Sdl in DVSA data end in a failure. The same handful of items account for most of them.

Its most common failure is lamps & electrical, which makes up 25.0% of the Austin Allegro Sdl's failures, followed by lamps & electrical, suspension, steering, exhaust & emissions. Each item below links to the part that resolves it. Confirm the exact fitment against your registration or VIN before buying, and have safety-critical work done by a competent mechanic.

What it fails on, and why

Lamps & electrical25.0% 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.

Suspension25.0% 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.

Steering12.5% 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.

Exhaust & emissions12.5% 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.

Brakes12.5% 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.

Visibility/wipers12.5% of failures

Visibility failures include torn or smearing wiper blades, a washer jet that does not reach the screen, and chips or cracks in the driver's swept area. Blades and washer fluid are quick, cheap fixes.

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. These are the usual parts; confirm the exact fitment against your registration or VIN before buying.

For the lamps & electrical failure: Austin Allegro Sdl headlight and indicator bulbsSearch Amazon for Austin Allegro Sdl headlight and indicator bulbsaffiliate search Find Austin Allegro Sdl headlight and indicator bulbs on eBayaffiliate

For the suspension failure: Austin Allegro Sdl suspension springs and shock absorbersSearch Amazon for Austin Allegro Sdl suspension springs and shock absorbersaffiliate search Find Austin Allegro Sdl suspension springs and shock absorbers on eBayaffiliate

For the steering failure: Austin Allegro Sdl steering track rod endsSearch Amazon for Austin Allegro Sdl steering track rod endsaffiliate search Find Austin Allegro Sdl steering track rod ends on eBayaffiliate

For the exhaust & emissions failure: Austin Allegro Sdl exhaustSearch Amazon for Austin Allegro Sdl exhaustaffiliate search Find Austin Allegro Sdl exhaust on eBayaffiliate

For the brakes failure: Austin Allegro Sdl brake pads and discsSearch Amazon for Austin Allegro Sdl brake pads and discsaffiliate search Find Austin Allegro Sdl brake pads and discs on eBayaffiliate

For the visibility/wipers failure: Austin Allegro Sdl wiper bladesSearch Amazon for Austin Allegro Sdl wiper bladesaffiliate search Find Austin Allegro Sdl wiper blades on eBayaffiliate

Other models

Austin Mini 1000 MOT failures34.2% failure rate Austin Mini Mayfair MOT failures35.2% failure rate Austin MINI MOT failures24.8% failure rate Ford Fiesta MOT failures27.1% failure rate

Sources: DVSA MOT History API: MOT test results and defect data · DVSA MOT testing data for Great Britain