Sunstrip Failures: What You Need to Know

The MOT test is a crucial part of vehicle ownership in the UK, ensuring that cars are safe and roadworthy. While many components are regularly checked, less common items can sometimes cause unexpected failures. One such item that can cause a headache for motorists is the sunstrip, particularly when it's applied incorrectly or is not up to the required standards. This article will delve into why a sunstrip might cause your vehicle to fail its MOT, what the guidelines state, and how you can ensure yours passes the test with flying colours.

Understanding the MOT and Sunstrips

The Ministry of Transport (MOT) test is designed to assess a vehicle's roadworthiness. This includes checking various safety-critical systems such as brakes, lights, steering, and tyres. However, the test also looks at other aspects that could affect visibility or the overall safety of the vehicle. Sunstrips, also known as sun visors or tinted strips applied to the top of the windscreen, fall into this category. While they can offer a degree of comfort by reducing glare, they are subject to specific regulations to ensure they do not impede the driver's vision.

Common Reasons for Sunstrip Failure

Based on the scenario described, a sunstrip can lead to an MOT failure for several reasons. The primary concern for the MOT tester is visibility. The guidelines are very clear about what is permissible regarding the windscreen and its coverings. Here are the most common reasons a sunstrip might cause a failure:

• Excessive Tinting: The most frequent cause of failure is that the sunstrip is too dark or covers too much of the windscreen. Visibility is paramount, and the driver must have an unobstructed view of the road.
• Improper Application: If the sunstrip is peeling, bubbling, or has been applied in a way that creates distortions in the glass, it can be deemed a failure. The aim is for a clear and unimpeded line of sight.
• Coverage Area: As mentioned in your experience, the placement and size of the sunstrip are critical. There are specific regulations on how far down the windscreen a tinted strip can extend. If it encroaches too far into the driver's direct line of sight, it will fail. The guideline often cited is that the tint should not extend below the 'top 10% of the windscreen' or 'below the area swept by the wipers'.
• Non-Approved Materials: While less common, if the material used for the sunstrip is not approved or is found to be reflective in a way that could dazzle other drivers, it could also lead to a fail.

MOT Guidelines on Windscreens and Tinting

The specific rules regarding vehicle windscreens and any applied tinting are outlined in the MOT inspection manual. While I don't have the exact, up-to-the-minute manual to quote directly, the general principles remain consistent. The key is to ensure that the driver's field of vision is not compromised. This typically means:

• The upper zone of the windscreen must remain clear.
• The area swept by the windscreen wipers must also be clear of any obstructions or excessive tinting.
• Any tinting must be uniform and not cause visual distortion.

The mention of a "swept area" in your experience is a critical clue. If the sunstrip encroaches into the area that your windscreen wipers are designed to clear, it's considered a safety hazard as it can obscure your vision, especially in adverse weather conditions like rain. The guideline about the top 10% is a common benchmark, but the wiper sweep area is often the more definitive factor.

What About 'Swept Area' and Wiper Blades?

You also mentioned the guideline about using the "right sized wiper blades". This is an important point. While the sunstrip itself is the primary focus here, the MOT also checks that your windscreen wipers are functioning correctly and are of an appropriate size for the windscreen. If your wipers are too small and don't clear a significant portion of the windscreen, especially in the driver's line of sight, this could also be a reason for failure. The implication is that if the sunstrip is in the area that *should* be cleared by the wipers, and isn't, then it's a problem.

Can I Remove a Sunstrip to Pass?

Yes, absolutely. As your experience demonstrated, removing the offending sunstrip is often the quickest and most effective way to resolve an MOT failure related to it. If the sunstrip is the sole reason for the failure, once it's removed and the tester is satisfied that visibility is no longer compromised, the vehicle should pass. The fact that the tester offered to issue a pass certificate after you removed it confirms this.

It's worth noting that if a sunstrip was applied by a previous owner and you are unaware of its compliance, it's always a good idea to check it before your MOT. You can do this by assessing how far down it extends and whether it interferes with the wiper sweep. If in doubt, it's better to remove it proactively.

Alternatives to a Full Sunstrip

If you are looking to reduce glare but are concerned about failing your MOT, there are alternatives:

• Factory-Tinted Windscreens: Many modern vehicles come with a factory-tinted band at the top of the windscreen. These are designed to meet regulations and are generally not an issue during an MOT.
• Very Light Aftermarket Tinting: If you opt for an aftermarket tint, ensure it is a very light shade and complies with the regulations regarding coverage area and visibility. It's always best to consult with a professional installer who is knowledgeable about MOT requirements.
• Temporary Visors: Some drivers opt for temporary, clip-on visors that can be removed easily. However, these would need to be removed for the MOT test if they obstruct the required visibility.

What to Do If Your Sunstrip Fails the MOT

If your vehicle fails its MOT due to a sunstrip, don't panic. Here's a step-by-step approach:

1. Identify the Issue: Understand precisely why the sunstrip failed. Was it too dark, too low, or poorly applied?
2. Remove the Sunstrip: Carefully remove the sunstrip. If you're unsure how to do this without damaging the windscreen, seek professional help.
3. Clean the Windscreen: Ensure the windscreen is clean and free from any adhesive residue.
4. Re-book the MOT: You will likely need to book a partial re-test. In many cases, if the vehicle is presented within 10 working days of the original test, only the failed items are re-inspected.
5. Present for Re-test: Take your car back to the testing station for the re-inspection.

Can a Sunstrip Be Legally Applied?

Yes, sunstrips can be legally applied to a vehicle's windscreen, provided they meet the specific regulations set out by the Department for Transport. The key is that they must not obscure the driver's vision. This means:

• The tint must not extend below the top 10% of the windscreen.
• The tint must not extend below the area swept by the windscreen wipers.
• The tint must not cause distortion or dazzle.

It's always wise to use a reputable installer who is aware of these regulations. They can advise on suitable products and application methods.

Frequently Asked Questions

Q1: My sunstrip is very light, why did it fail?

A1: Even if the tint is light, the MOT tester will check its placement and coverage. If it extends too far down the windscreen or into the area swept by the wipers, it will fail, regardless of how light the tint is.

Q2: Can I use a sunstrip that was on the car when I bought it?

A2: You can, but you are responsible for ensuring it complies with MOT regulations. If it fails the MOT, you will need to remove it.

Q3: What happens if my sunstrip is damaged or peeling?

A3: Any damage or peeling that affects the clarity of the glass or the driver's view can lead to an MOT failure.

Q4: Are there specific brands of sunstrips that are MOT compliant?

A4: While specific brands aren't mandated, look for products that explicitly state they are designed for road use and comply with UK regulations. Professional installation is often the best way to ensure compliance.

Q5: What's the penalty for driving with a non-compliant sunstrip?

A5: While the MOT test is the primary concern, driving with a sunstrip that significantly obstructs your view could lead to a Fixed Penalty Notice from the police for having a dangerous vehicle or obstructed view.

Conclusion

Ensuring your vehicle passes its MOT is essential for legal road use. Sunstrips, while offering a minor benefit, can easily become a point of failure if not applied correctly or if they do not adhere to the strict visibility requirements. By understanding the guidelines, checking the coverage area of your sunstrip, and being prepared to remove it if necessary, you can avoid an MOT failure and keep your vehicle on the road safely.