Actually itu2019s a requirement of vehicle identification as a modification of the factory specs when they released it for normal public use.Itu2019s the same conditions as per your exhaust, emissions, engine, window tinting, etc. to be followed as part of the vehicle safety inspection and certification.Any time a modification is made to a vehicle the owner is required to report it to the DOT/MOT to properly update the vehicle information database. Similarly, your insurance is also based on your vehicles manufacturers specs.So the same vehicle with different specs will have a higher or lower insurance liability risk factor, and thus your insurance premium reflects it.A person buys an old 1987 Chev Monte Carlo equipped with a V6 and pays $1400/yr for insurance based on the factory specs. They replace the motor with a high-performance SBC400, installed a small 6u201371 blower, poked a hole in the engine hood for the blower, replace the factory TH200 tranny with a 700R4, replaced the entire rear end with a modified Ford rear end with posi, modified the driveshaft, of course, installed sub-frame connector rails, a H dual exhaust system, removed the cats altogether, installed a 3 core maxi-core rad, part-tubed the rear wheel wells, and installed some much wider tires. Then they illegally tint every window pitch black, every single window.Later this same person would get into a street race and end-up killing a family of 4 in a head-on collision.So when the police arrive and lay street racing charges, seize the vehicle, suspend his license, arrest him, and then send the vehicle to an inspection station. Turns out heu2019s now also charged with insurance fraud once they notify his carrier and the MOT of the vehicle modifications without informing them, as well as the illegal mods heu2019s performed. No company would have have been able to prinsurance coverage for the vehicle to be driven on the street. And now he canu2019t get insurance coverage for less than $12K/yr from the Facilities group of insurance for 5 years after his insurance fraud, street racing, and suspended license period has expired in 5 years or so.Thereu2019s a reason why you pay low insurance on an everyday vehicle, much more on a sports car, and sometimes you canu2019t get insurance or even legally drive some vehicles on the road. On a side note, when a vehicle is stolen, the police and the MOT need to know how to properly identify it when itu2019s found, and how to be able to identify it if they come across it on the road.