The tax will start at a rate of 3p per mile driven in an EV and 1.5p per mile driven in a PHEV, and drivers will need to self-declare their mileage annually. Concerns are growing that when the scheme is introduced, drivers will fit mileage blockers as a means of avoiding or reducing this levy. Mileage blockers are available for many popular petrol and diesel vehicles and, increasingly, for electric and hybrid ones. Posing as a customer, an Autocar reporter contacted a leading supplier of mileage blockers. "Also, they are just about to finish developing blockers for Omoda, Jaecoo and Chery vehicles."