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What you need to consider before modifying your car

There are plenty of reasons why car owners want to modify their cars. This might be to make their cars more attractive, improve performance or to just impress friends. Whatever the reason you have for modifying your car, you should be aware of a number of factors that can result in a negative impact for the driver. It is important to consider the following factors before making any alterations to your vehicle.

Car Insurance

Adding modifications to any car can have serious ramifications in terms of car insurance costs. This will typically lead to paying massively inflated insurance premiums, whilst some companies won’t insure you at all. The reason for this is because modified cars are seen to be much riskier than standard vehicles and insurance companies believe that these vehicles are more likely to be involved in a road collision. This could be caused by any number of factors, but could involve visual impairment, from things like overly large rear spoilers, to breaking the speed limit, as a result of souped up engines.

Insurance companies are not only worried about this danger though, as it has been shown that thieves are much more likely to be attracted to modified vehicles, leading to an increased chance of theft.


As touched on above, modified cars are much more likely to cause accidents, injuries or fatalities. This does not only apply to the driver and their passengers, but other road users as well.

There are a number of examples of car modifications that, if taken too far, could cause serious harm. For example, tinting windows too severely could impair the vision of the driver and lead to a road collision. Car lights, like under car neon’s and head lamps, can also be a dangerous addition to a vehicle if they are taken too far. These lights, if made too bright, can easily dazzle other road users, which could lead to a road collision that could put them, you and others in grave danger.

The Law

Modified cars can also get you in trouble with the law, depending on how far you go with your alterations. The legal system has caught up with this growing trend in recent years, and as a result has created a variety of laws that limit what motorists can add to their vehicles.

For instance, cars are required to let at least 75% of light through their windscreens and a minimum of 70% of light through front side-windows, which limits the amount of tint people can apply to their cars. Another example is that all numbers and letters on a number plate must be kept to the standard shape and size. In addition, adding symbols to plates is completely banned, apart from national flags. Failure to comply with these laws could lead to a fine of up to £1,000.

If you want to have a look at other laws that prohibit car modification, you can find a great guide from Just Motor Law below. Click on an image to see a bigger version.

Car modifications law

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