Suspension and Steering MOT Checks Explained

Suspension and steering form one of the harder MOT categories for owners to self-assess, since most of what’s being checked sits underneath the car or involves components that need to be physically manipulated to properly test for wear. Unlike a blown bulb or worn tyre, a failing suspension component often gives no obvious warning from the driver’s seat until it’s developed considerably, which is exactly why this category catches people out more than some of the more visible ones.

What’s actually included in this category

Suspension covers springs, dampers (commonly called shock absorbers), the various arms and links that connect the suspension to the car’s body, and the bushes and joints within them. Steering covers the steering rack, track rods, and the connections between the steering wheel and the front wheels. Together, these systems are responsible for keeping the car’s wheels in proper contact with the road and giving the driver accurate, predictable control, which is exactly why both are treated as safety-critical rather than simply comfort-related.

How testers physically check for wear

With the car raised on a ramp, testers physically push and pull on suspension and steering components, feeling for movement or play that shouldn’t be present in a properly functioning system. This hands-on approach catches wear that wouldn’t necessarily be visible just from looking, since a worn bush or joint can look largely intact while still having developed enough internal play to be unsafe. Dampers are also checked for signs of fluid leaking from their seals, which indicates internal failure and reduced ability to control the car’s movement over bumps and during cornering.

Common suspension fail points

Certain components tend to wear and fail more predictably than others across most vehicles.

• Leaking dampers, visible as fluid weeping from the seal at the top or bottom
• Worn suspension bushes, allowing excessive movement in components that should be firmly located
• Corroded springs or mounting points, particularly on cars that have covered several winters on gritted roads
• Worn ball joints, allowing play in the connection between suspension arms and the wheel hub
• Damaged or bent components following a pothole or kerb impact

Common steering fail points

Steering faults often centre around excessive play or wear in the connections between the steering wheel and the wheels themselves. Worn track rod ends, a failing steering rack, or excessive play in the steering column can all reduce a driver’s precision and predictability when steering, particularly at higher speeds or during quick manoeuvres. Power steering faults, including fluid leaks on hydraulic systems or electrical faults on electric power steering setups, can also affect how the test assesses overall steering feel and effort, though the core safety assessment focuses on mechanical play and security rather than how light or heavy the steering feels to operate.

Why potholes are a genuine local concern

West Yorkshire’s roads, particularly on some of the older residential streets and rural routes around Bradford, see their share of potholes, especially after a hard winter. A sharp pothole impact can knock a wheel out of alignment, damage a suspension component, or in more serious cases bend a wheel or track rod, and the effects aren’t always immediately obvious from behind the wheel. A car that’s recently hit a significant pothole is worth getting checked proactively, rather than waiting for the next scheduled MOT to reveal any damage that’s occurred, since driving on damaged suspension or steering components in the meantime carries a genuine safety risk.

Why these faults often go unnoticed until testing

Suspension and steering wear typically develops gradually, and drivers naturally adjust to small changes in how a car handles without consciously registering the shift. A slightly looser steering feel or a marginally bouncier ride over several months rarely triggers alarm the way a sudden change would, which is exactly why the physical, hands-on ramp inspection during an MOT catches problems a driver’s own perception might have missed entirely. This is also why a suspension fail can come as a genuine surprise, since the car may have felt completely normal in daily use right up until the test.

How wheel alignment connects to this category

Wheel alignment, sometimes called tracking, isn’t a standalone item on the MOT checklist, but it’s closely connected to both the suspension and tyre categories in practice. Suspension components that have worn or been knocked out of position, whether through general wear or a pothole impact, often throw alignment out at the same time, and misaligned wheels accelerate uneven tyre wear, which can itself become a separate MOT fail point down the line. Getting alignment checked and corrected as part of any suspension repair, rather than treating it as a separate optional extra, helps prevent the same tyre wear problem recurring shortly after new tyres have been fitted.

Signs worth acting on before the MOT confirms a problem

While a lot of suspension and steering wear is genuinely hard to detect without a ramp, some signs are noticeable enough to prompt an earlier check rather than waiting for the annual test.

• A clunking or knocking noise over bumps or when turning
• The car feeling noticeably less stable or more wallowy through corners than it used to
• Uneven tyre wear, particularly concentrated on one edge
• The steering wheel not returning to centre smoothly after a turn
• Visibly uneven ride height from one side of the car to the other

The cost of leaving suspension problems unaddressed

A single worn bush or a leaking damper caught early is usually a straightforward, relatively affordable repair. Left unaddressed, the extra stress placed on neighbouring components as they compensate for the worn part can cause additional wear elsewhere in the suspension system, turning what started as a single-component fix into a more involved and more expensive repair covering multiple parts. This kind of knock-on wear is a genuine reason to treat an early suspension advisory seriously rather than assuming it can safely wait until the following year’s test.

Why this category matters beyond just passing the test

Suspension and steering aren’t just about comfort or ride quality, they’re directly tied to how predictably a car responds in an emergency manoeuvre, how effectively it maintains contact with the road surface under braking and cornering, and how much control a driver genuinely has when something unexpected happens on the road. Treating this category as a genuine safety priority, not just an MOT checklist item, is the right mindset given how much these systems actually influence a car’s real-world handling and stopping behaviour.

Getting suspension and steering checked properly

Because so much of this category depends on a hands-on inspection with the car raised, a proper check genuinely needs a ramp and trained eyes rather than anything a driver can reliably assess from ground level. A full 50-point health check includes exactly this kind of thorough suspension and steering inspection, catching wear and damage before it becomes an MOT fail or, more importantly, before it affects how safely and predictably the car handles on the road. This is particularly worth prioritising if the car has recently hit a significant pothole, has covered several years on UK roads, or is simply due its annual check. You can find the DVSA’s full technical breakdown of how suspension and steering are specifically assessed in gov.uk’s guide to MOT checks.

How age and mileage affect this category

Suspension and steering components wear gradually with both age and mileage, and while there’s no fixed replacement schedule the way there is for something like an oil change, most dampers have a realistic working life measured in tens of thousands of miles rather than lasting the full life of the car. Bushes, being made of rubber or a similar compound, also degrade with age even on a car that’s covered relatively low mileage, since exposure to weather, road salt and general ageing affects the material over time regardless of how far the car has actually been driven. This is why even a low-mileage older car can develop genuine suspension wear, and why age alone is a reasonable prompt to get things checked rather than relying purely on the odometer reading.

What to expect from a proper suspension inspection

A thorough check goes beyond a quick glance underneath the car. It typically involves the vehicle raised on a ramp, a mechanic physically testing each suspension arm, bush and joint for play, checking dampers for leaks and testing their damping action, and visually assessing springs and mounting points for corrosion or damage. This level of detail simply isn’t achievable during a driveway walkaround, which is exactly why suspension issues are among the harder MOT fail categories for owners to anticipate on their own, and why a proper professional inspection genuinely adds value beyond what a careful driver could catch themselves.

How weather and road salt accelerate suspension wear

Winter road treatments, particularly the salt and grit spread across West Yorkshire’s roads during colder months, accelerate corrosion on suspension components considerably compared to a car that only ever sees dry, salt-free roads. Springs, mounting points and exposed metal brackets are especially vulnerable, since salt-laden spray is thrown up directly onto these areas during everyday driving. A car that’s covered several winters on UK roads is realistically more likely to show corrosion-related suspension wear than its age or mileage alone would suggest, which is worth bearing in mind when budgeting for maintenance on an older vehicle that’s spent its life exposed to typical British winters.

What a suspension or steering advisory typically means

An advisory in this category usually indicates a component is showing early signs of wear, such as the very beginning of play in a bush or joint, without yet exceeding the threshold that would fail the car outright. Because suspension and steering wear tends to progress steadily rather than suddenly, an advisory here is genuinely worth treating as an early prompt to book a proper check, rather than something to file away and forget about until the following year, since components flagged this way often do progress to a fail if left unaddressed for another full twelve months.

Steering feel versus genuine mechanical fault

It’s worth distinguishing between steering that simply feels different because of tyre choice or road surface, and steering that has developed a genuine mechanical fault. A change in tyre brand or profile can noticeably alter how heavy or responsive the steering feels without indicating any underlying problem at all, while genuine play, looseness, or a clunk on turning almost always points to something worth having checked. If you’re ever unsure whether a change in steering feel is cosmetic or mechanical, it’s far better to have it looked at than to assume it’s nothing, given how directly steering affects a driver’s control of the car.

How often to have suspension and steering checked outside the MOT

Beyond the annual test, it’s worth having suspension and steering looked at whenever the car has had a significant impact, such as a hard pothole strike or a kerb clip, and as a routine part of any full service. Drivers covering higher mileage or regularly using rougher roads may benefit from more frequent checks than someone doing low mileage on well-maintained routes, since the rate of wear genuinely varies with how and where a car is driven, not just how old it is.

What owners can reasonably check themselves

While a full suspension and steering assessment genuinely needs a ramp, there are a few things an owner can reasonably check without any special equipment. Parking on level ground and looking at how the car sits from a short distance away can reveal an obvious lean or uneven ride height. Turning the steering wheel gently while stationary, feeling for excessive free movement before the wheels respond, can hint at play worth investigating further. Neither of these checks is a substitute for a proper inspection, but they’re a reasonable first step if you want a rough sense of whether something might be worth booking in sooner rather than later. Getting into this habit costs nothing and, over time, gives you a genuinely reliable sense of what feels normal for your own car.

Source: gov.uk's guide to MOT checks