Exhaust cause two issues:


People found with a noisy exhaust would get a £50 non endorsable Fixed Penalty Notice (FPN) for either failure to maintain the system or use of a vehicle with an altered system or excessive noise. This effectively covers the anti-social modification of a vehicle and a system must not be altered so as to emit more noise than the factory standard.


Where the exhaust system has been modified in such a way as it may allows emissions to enter the cabin of the vehicle. This would be an immediate Prohibition, plus FPN or report for Summons for a vehicle in a dangerous condition.


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