The third-generation Fiesta Mark III, codenamed BE-13, was unveiled at the end of 1988 and officially went on sale in February 1989. The car was based on a new platform, ditching the old car's rear beam axle for a semi-independent torsion beam arrangement, and looked radically different, addressing the principal weakness of the previous generation – the lack of a five-door version, which was by then available in its major rivals such as the Fiat Uno, Peugeot 205 and 106, and Opel Corsa/Vauxhall Nova. The other main change was to the running gear – the improved high-compression swirl version of the Kent/Valencia powerplant. The CVH units from the second generation were carried over largely unmodified. The diesel engine was enlarged to a 1.8 L capacity.