Yes, a bonnet can fail an MOT in the UK if it does not open properly, does not latch securely, has a faulty safety catch, sharp dangerous damage or creates a risk while driving.
The bonnet must close properly and remain secure. If it cannot latch correctly, the safety catch is not working, or the bonnet may lift while driving, it can result in an MOT failure.
Even minor bonnet latch issues are worth fixing before the test because they are often quick and inexpensive to resolve compared with the inconvenience of a failure and retest.
From a mechanic’s point of view, I am checking whether the bonnet shuts, locks, releases correctly and stays secure. A dent is not always a fail, but a bonnet that is unsafe, sharp or not secure is a problem.
If a bonnet opens while driving, it can block the windscreen and make the driver lose forward visibility. That is why a faulty bonnet latch is treated seriously even if the car drives normally.
The bonnet also needs to be safe around pedestrians and other road users. Sharp metal, loose panels or insecure hinges can create danger.
These are the common bonnet-related issues that can become MOT failures.
If the bonnet does not lock securely in the closed position, it can fail.
The secondary catch helps prevent accidental opening if the main latch releases.
Lifting, bouncing or obvious movement while driving suggests insecurity.
Bent metal or damaged panels may present a danger to people around the vehicle.
Rust around hinges, catches or mounting points can weaken parts.
If badly fitted, the bonnet may not close or latch correctly.
These are the faults I would expect to see in real garage work.
Old grease, dirt and corrosion can stop the latch moving freely.
The handle may feel loose, stiff or fail to release the bonnet properly.
The secondary catch may stick or fail to spring back into position.
Previous repair, impact or adjustment can stop the bonnet sitting correctly.
Missing buffers can make the bonnet rattle or sit too low.
Corrosion can weaken support points and affect security.
Rust MOT guide →Yes, it can be. If a bonnet opens unexpectedly while driving, it may block the driver's view and create a serious hazard.
Even if it does not fully open, movement at speed can indicate the latch is not securing properly. Any bonnet that feels loose or does not shut correctly should be checked promptly.
These checks take a few minutes and can prevent an avoidable MOT failure.
Make sure it releases smoothly and shuts properly without forcing it.
After closing, gently lift to confirm it has caught securely.
The secondary catch should move freely and hold the bonnet if the main latch releases.
Look for looseness, cracks, damage or heavy rust.
Repair dangerous sharp damage if present.
Sticky catches often improve with cleaning and suitable lubrication.
Many bonnet faults are relatively straightforward to sort. Catch adjustment, cable lubrication, cleaning the latch or replacing worn latch parts may solve the issue quickly.
Leaving the fault unresolved can mean an MOT failure and the inconvenience of a retest. It is better to fix a sticky catch before it becomes a bonnet that will not open or close at all.
Before replacing parts, confirm whether the problem is the latch, cable, catch adjustment, bonnet alignment, hinge position, rubber stops or accident damage. A simple adjustment can sometimes look like a bigger fault.
A bonnet that will not open can create maintenance and inspection issues, while a bonnet that will not close securely is usually the more urgent safety concern.
If the release cable is stiff or jammed, fix it before it becomes fully seized. If the bonnet does not close securely, do not keep driving normally until it is checked.
A bonnet that sits unevenly can be a sign of poor adjustment, previous accident damage or weak latch alignment. It does not always mean serious damage, but it should make you inspect the front end carefully.
Common questions UK drivers ask when the bonnet latch, catch or bodywork looks questionable before MOT.
Yes. If the bonnet cannot latch securely, it can fail.
Yes, if corrosion affects security, hinges, catches or safety.
Yes, if it creates sharp edges, blocks visibility or stops the bonnet closing properly.
It can create access and maintenance issues and should be repaired.
Often yes, depending on the vehicle and the cause of misalignment.
Check bonnet latch security and repair any looseness before the test.
Motor Vehicle Expert publishes practical UK-focused vehicle diagnostics, maintenance, MOT, used car and repair cost guidance based on common driver questions and real-world garage situations.
