Ever since cars became somewhat common, owners wanted to customize them to fit their tastes and needs. At the beginning, it was fairly easy because cars were practically bespoke-built for the richest. But as cars became a mass produced commodity affordable to the masses, car owners always looked for something to make them stand out from the rest of the crowd. Fairly speaking, car mods are as old as cars, and as technology and car-related laws started progressing, there came many new trends in modifying cars. While some car mods are quite benevolent, some of them affect environment, safety and public order, and as such, they are illegal. Today, we’re going to present you ten car modifications that can get you into trouble!

Dark Window Tints

Tinted windows have their own set of benefits, like blocking just the right amount of Sun, making daily driving a more pleasant experience. That’s why factories often offer tinted windows as optional extras, or even standard on more upscale cars. But, while a mild tint is completely okay, dark window is illegal in most countries and states. There are two reasons for that. The first of them is that extremely dark tint limits your visibility in night time driving and makes you less aware of your surroundings. The other is that it conceals you from the law enforcement, putting them in all sorts of potential dangers. That’s why an extremely dark window tint is not a good idea on your car.


Most of us think of the Fast&Furious movies when it comes to neon lighting, but in the noughties they were actually very popular on the street. Despite being illegal in almost every part of the world, they aren’t exactly tasteful. We should probably best leave this mod to something people did back in the day.

Truck Lifting

Many truck owners want to enhance their off-roading capabilities by lifting their trucks, giving them more ground clearance. Up to a certain extents, these mods are legal, but lifting your truck over the limit is forbidden in many states. The reason behind this is that it directly endangers other drivers as well as pedestrians, so if you are planning to do this mod, read your local laws very carefully.

NOS kits

While it is very common on the dragstrips, tuners’ favourite alternate fuel is illegal for road cars. Due to the highly flammable nature of nitrous-oxide and its notorious connection to street racers, this power booster is not welcome on the road. A NOS kit can really get you in all sorts of trouble, so be very cautious if you ever plan to equip your car with a bottle of pressurized gas that burns at an astounding rate.

Custom Exhausts

Exhaust fumes are one of the main causes of air pollution in the world, and a crackdown on them began in the early seventies. The exhaust system has several parts designed for keeping emission levels low, but they also make cars less powerful. Removing these parts for extra horsepower is not a good idea for at least two reasons. First of all, modern cars are packed with sensors and electronics, so removing these parts can cause other problems with the car. Second, it is plainly illegal because your car no longer complies with emissions standards. When modifying your exhaust system, be aware of this and check your local laws.

Engine Mods

The same as with the previous one, this mod is also illegal because tuning your engine can affect your CO2 emissions. And by making your car non-compliant with the green laws, you’re risking trouble with the law.


Aftermarket lights, both front and rear, can be illegal in many places. The thing with aftermarket front lights is that they shine much brighter than legally allowed, posing a danger to other drivers. Also, any rear lights that don’t follow the standard colour scheme are illegal in many places.


Lowriders are among the quintessential examples of the American car culture, and they have been around for decades. However, some states forbid cars that are riding too low. So if you live in Georgia and Maryland for example, be aware that you can get in trouble. Luckily, most air ride kits can bypass these legal limitations by simply lifting the car to a legal level when driving.

Radar and laser jammers

Okay, this one is pretty self-explanatory. As these types of devices are used to stop law enforcement from doing their work properly or evade them and continue driving above the speed limit, they are illegal almost anywhere in the world.

Licence Plate Frames

The final illegal car mod that we chose is a fairly simple one. Licence plate frames that partially conceal the numbers, letters or even state names are illegal. Apart from that, they can also be quite tacky, so it’s one more reason not to put them on your car.