10 Most Common MoT Failure Points

If you fail the MoT, your technician will present you with a list of MoT Failure Points you need to fix. Staring at the list, you might find your eyes glancing over the items while your brain does some fuzzy math. The repairs could come to thousands of pounds. The less logical part of your mind might want to crumple the printout and make a dash for your keys, but it won’t do you any good. Everything is digital these days. Your MoT failure points have already been transmitted to whatever draconian government agency handles such matters.

Fear not, if you properly maintain your car, the MoT should not pose too much of a problem. In this post, we will highlight the ten most common failure points. The good news is that many of these MoT failure points are quick, inexpensive fixes. Let’s get started.

      Headlamp aim

    Poorly adjusted headlights cause 17 percent of MoT failures—the biggest single cause. Misaligned headlights pose a threat to oncoming traffic because they can blind. Don’t fret, your local mechanic should be able to realign your lights in just a few minutes.

      Poor tyre tread depth

    Minimum tread depth for tyres in the UK is 1.6mm. However, the optimal tread depth is no less than 3mm because tyre performance declines beyond that, especially in wet conditions. Insufficient tread depth is responsible for 14 percent of MoT failures. Check your treads before getting your MoT inspection done!

      Registration plate lamp Failure

    A surprising 12% of MoT failures are due to the registration plate lamp not working. This repair only takes a few minutes to complete, and it only costs a few pounds.

      Bad Wiper blades

    Twelve percent of MoT failures points come down to shoddy wiper blades. Wiper blades don’t last forever, but they don’t exactly tell you when they’re going bad, either. Next time you find yourself sitting at a stoplight in the rain, look at your windscreen. Do your wipers smear the water across the screen?

    Or do they sweep the water away in one smooth motion? The latter is what you want.

    Did you know that with YesMechanic you can get MoT failure points repaired?

      Broken Stop Lamp

    Broken stop lamps account for 11 percent of failures. Have you ever been behind a motorist with a broken stop lamp? It can be a frightening experience. Little wonder that this blunder can get you an automatic fail. Fortunately, this is an inexpensive fix.

      Blown front lamps

    Bringing us back to headlines is number six on the list, with 10 percent of MoT failures. Blown headlines pose a serious safety concern for all involved. Headlines on modern cars can be tricky to replace, so you may have to get this one fixed by a mechanic.

      Shoddy tyres

    The MoT doesn’t just look at tread depth, it considers the overall condition of the tyre. Eight percent of MoT failures are due to shoddy tyres. If you’re in the habit of buying used tyres, you may have problems when it comes time to do your MoT. Used or refurbished tyres wear out much faster than new ones. Here’s what your technician looks for: cracked sidewalls, cuts, punctures and bulges.

      Rubbish Suspension

    The pins and ball joints in your suspension wear over time. Unfortunately, this one is not a cheap fix. Eight percent of MoT failures come down to the suspension. Signs of a failing suspension include audible knocks, dings, and clonks when driving over hilly terrain, driving slowly through intersections or going over speed bumps. If in doubt, get it checked before your MoT.

      Lazy parking brake

    Hand breaks can come out of alignment after several thousand uses. Sadly, if the cable is frayed or broken, it can be a costly fix. Under performing parking breaks cause seven percent of MoT failure points.

      Dank exhaust system.

    Seven percent of MoT failures are due to smoggy exhaust systems. Signs of a failing exhaust system:

    • Liquid dripping from the tailpipe
    • A sound like rocks being thrown about in a box—a sign of a failed catalytic converter
    • A vibration or loss of power when accelerating
    • Smelling exhaust fumes within the vehicle.