How Weathered Wiper Blades Affect Your MOT Test

Why Wiper Blades Matter for Your MOT

When preparing for an MOT test, many drivers focus on brakes, tyres, and lights, but often overlook windscreen wipers. However, weathered or damaged wiper blades can directly affect your MOT result. Clear visibility is a legal requirement, and if your wipers fail to keep the windscreen clear, your car may fail the test.

MOT Rules on Wiper Blades and Visibility

During an MOT, the tester checks whether your wiper blades are effective at cleaning the windscreen. If the blades are torn, split, or unable to clear rain, dirt, or debris, this is considered a defect. According to MOT guidelines:

• Minor defects: Slight wear on wiper blades but still functioning may be noted, but won’t cause a failure.
• Major defects: If wipers cannot clear the windscreen effectively, it will result in an MOT failure.
• Washer system check: The washer jets and fluid levels are also inspected. If they don’t spray properly, this can also cause a fail.

Common Signs of Weathered Wiper Blades

Wiper blades deteriorate over time due to sun exposure, freezing temperatures, and frequent use. Signs your blades may cause issues in an MOT include:

• Streaks or smears left on the windscreen.
• Squeaking or juddering noises when in use.
• Visible cracks, splits, or fraying rubber.
• Blades not making full contact with the windscreen.

How to Prevent MOT Failure Due to Wipers

The good news is that wiper-related MOT failures are easy and inexpensive to prevent. Here are some tips:

• Inspect regularly: Check your blades every few weeks for wear and tear.
• Replace annually: Most manufacturers recommend replacing wipers once a year.
• Use quality washer fluid: Avoid water alone, as it won’t clean effectively and may freeze in winter.
• Check washer jets: Make sure they spray evenly and aren’t blocked.

Replacing wiper blades is a quick job, often costing less than £20, and can save you from the hassle of a failed MOT.

Final Thoughts

Wiper blades may seem like a minor detail, but their condition plays an essential role in road safety and MOT compliance. Weathered or ineffective blades can cause poor visibility, increasing risks on the road and resulting in an MOT failure. By maintaining your wipers and washer system, you can avoid unnecessary problems and keep your car safe and roadworthy.