Millers Oils BTRDA 1400 Championship is for vehicles up to 1400cc, running in advance of the main field. There are vehicle classes for 1400L, 1400C and 1400S cars.
Class 1400L - All current and former FIA Group N1 and R1A cars and all cars up to 1400cc,with engines of more than 8 valves and retaining the standard fuel and inlet manifold systems. No remote reservoir suspension is permitted unless fitted as standard or homologated.
Class 1400C - Cars up to and including 1400cc with a maximum of 8 valve engines, plus all cars up to 1000cc not eligible for class RF1.0. No remote reservoir suspension permitted.
Class 1400S - All other cars up to and including 1400cc.
For RF1.4 and RF1.0/F1000 see BTRDA Rally First