(24)The tampering of vehicles to remove or deactivate parts of the pollution control systems is a well-known problem. Such practice leads to uncontrolled emissions and, therefore, should be prevented and effective, proportionate and dissuasive penalties should apply. Tampering of the odometer leads to false mileage and hampers the proper in-service control of a vehicle. It is therefore of the utmost importance to guarantee the highest possible security protection of those systems, complete with security certificates and appropriate tampering protection to ensure that neither pollution control systems nor the vehicle odometer can be tampered with.