The Capri proved highly successful, with 400,000 cars sold until 1970. Ford revised it in 1972 to become what is known by enthusiasts as the Capri "Bis" (i.e. MiG-21bis, or "plus") or, in the UK, the "Mark 1 facelift" Capri. The car received a new and more comfortable suspension, rectangular headlights, enlarged tail-lights and new seats. The Kent engines were replaced by the Ford Pinto engine and the previously UK-only 3000 GT joined the German lineup. In the UK the 2.0 L V4 remained in use.
1973, saw the highest sales total the Capri ever attained, at 233,000 vehicles: the 1,000,000th Capri, an RS 2600, was completed on 29 August.
In December, Ford replaced the Cologne V6 based RS2600 with the Essex V6 based RS3100, with the usual 3.0 L Essex V6's displacement increased to 3098 cc. Unlike its predecessor, it used a double-barrel Weber carburettor, and reached the same 150 PS (110 kW). Only 250 RS3100s were built for homologation purposes. However, the car was still competitive in touring car racing, and Ford Motorsport produced a 100-model limited edition with this new engine. The Group 4 RS3100’s engine was tuned by Cosworth into the GAA, with 3412 cc, fuel injection, DOHC, four valves per cylinder and 435 hp (324 kW) in racing trim. The car also featured improved aerodynamics. Besides the racing RS3100, the GAA was also used in Formula 5000.
