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The Ford Escort RS Cosworth is a rally version homologation special of the fifth generation European Ford Escort. It was designed to qualify as a Group A car for the World Rally Championship, in which it competed between 1993 and 1998. It was available as a road car from 1992 until 1996 in very limited numbers. The first 2500 cars made before 1 January 1993 are in fact "Homologation special versions." It was instantly recognisable due to its large "whale tail" rear spoiler. One of the main selling points was the Cosworth YBT, a highly tunable turbocharged with a bore x stroke of Inline-four engine which had an output of in standard trim. Tuning companies have achieved power outputs of over .