Land Rover MOT Failures: Common Issues & How to Avoid Them
Every year, thousands of Land Rover and Range Rover owners get caught out at MOT time by problems that could have been spotted, and fixed, weeks earlier. A failed MOT isn’t just inconvenient… it can mean your car is off the road until the work is done, and repairs booked in a rush are rarely cheap.
At Broadfields Garage, we carry out MOT tests and pre-MOT checks on Land Rovers and Range Rovers every week. In this guide, we’ve pulled together the most common reasons these vehicles fail their MOT, what causes them, and how to avoid an unwanted surprise at test time.
Air Suspension Faults
This is one we see time and time again on Range Rovers, Discoverys, and other air suspension-equipped models. If the vehicle is sitting unevenly, dropping overnight, or throwing up a suspension warning light, it’s likely to fail on ride height or suspension function.
Air suspension problems are usually caused by leaking air springs, a tired compressor, or corroded air lines… all of which get worse the longer they’re left. The good news is that most faults are entirely preventable if they’re caught early rather than at the test centre.
If your Land Rover has been sitting low or the dash has flagged a suspension fault, it’s worth getting it looked at before your MOT is due, not after. Our team carries out full suspension diagnostics as part of our servicing and repairs.
Tyre Condition and Tread Depth
Tyres are one of the most common MOT failure points on any vehicle, and Land Rovers, being heavier and often used off-road or for towing, can wear through them faster than most.
The legal minimum tread depth is 1.6mm across the central three-quarters of the tyre, but we’d always recommend getting tyres checked well before they reach that point. Sidewall damage, cracking, and uneven wear (often a sign of a suspension or alignment issue) are also common fail points that go beyond just tread depth.
We supply and fit a full range of Land Rover tyres, and we’ll always flag any wear patterns that suggest a bigger issue is at play.
Lighting and Headlight Aim
Blown bulbs are an easy, cheap fix… but they still cause a huge number of MOT failures every year simply because they go unnoticed until test day. On air suspension vehicles, there’s an extra factor to watch: incorrect ride height can throw off headlight aim, causing a fail even when the bulbs themselves are fine.
Before your MOT, it’s worth doing a quick walk-round to check all lights are working, including number plate lights and indicators, which are easy to overlook.
Brake Wear and Performance
Brakes are a safety-critical item, and it’s an area we take seriously on every Land Rover that comes through our doors. Common MOT fail points include worn pads and discs, uneven braking performance across the axle, and handbrake efficiency, the latter often affected by cable corrosion or calipers on models that see regular off-road or muddy use.
Squealing, grinding, or a spongy brake pedal are all signs worth acting on before test day rather than waiting for the tester to find them. Full brake inspections are carried out as standard as part of our MOT testing and servicing.
Corrosion and Underbody Condition
Land Rovers built for off-road use are naturally more exposed to mud, salt, and moisture than most vehicles, and that takes a toll on the underbody over time. Corrosion on structural components, brake lines, and fuel lines is a serious MOT fail point, and in more advanced cases can be an expensive repair.
Regular inspections underneath the vehicle are the best way to catch corrosion while it’s still minor. If your Land Rover spends a lot of time off-road, on salted winter roads, or near the coast, it’s worth having this checked more frequently than the annual test.
Emissions and DPF Issues
Diesel Land Rovers, particularly those used mainly for shorter journeys, can run into trouble with a blocked Diesel Particulate Filter (DPF), which will cause an emissions fail. A DPF needs regular motorway-speed driving to properly regenerate, and without it, soot builds up faster than it clears.
Warning signs include a DPF warning light, reduced power, or the vehicle entering limp mode. In many cases, this can be resolved without a full replacement, but it does need addressing properly rather than ignored or reset without investigation.
Should You Be Worried About Your Land Rover’s MOT?
Not at all… the vast majority of these issues are entirely avoidable with the right checks beforehand. A Land Rover that’s properly serviced and inspected ahead of its MOT is far more likely to sail through than one that’s only looked at once a year, on test day itself.
The key is not waiting for a warning light or a test failure to prompt action. Regular servicing, a pre-MOT check, and dealing with small issues while they’re still small will save you both money and downtime in the long run.
Book Your Land Rover’s MOT with Broadfields
Whether your MOT is due soon or you’d like a pre-test check to catch any issues in advance, the team at Broadfields Garage is here to help.
We’re an independent Land Rover specialist based in Dunmow, Essex, covering Essex and Hertfordshire. We offer full MOT testing, servicing and repairs, tyres, and more, all at honest, transparent prices.
Get in touch with us on 01371 872 940 or email info@broadfieldsgarage.co.uk to book your MOT. We also offer a collection and delivery service if that’s more convenient for you.
