car signalled the beginning of rationalisation at British Leyland, with the SD1 replacing two model ranges - the Rover P6 and Triumph 2000/2500. The popularity of Nissan's range of Datsun-badged cars in the 1970s was largely down to their low prices, cheap running costs, good equipment levels and a reputation for better reliability than most British cars, although these cars also went on to gain a reputation for being prone to rust. BLMC's share of the UK market dropped from 40% to 32% between 1971 and 1973, with its new Morris Marina and Austin Allegro family cars selling well on the British market but not proving popular on many export markets, with the motoring media being critical of the styling of these new models as well as questions regarding the level of quality. By 1974, the UK's position as a world motor vehicle manufacturer had dropped to sixth place. In 1974, both BLMC and Chrysler UK appealed to the UK Government for financial help. The Government rejected the idea of a merger between the two companies, and instead Chrysler UK received a loan and BLMC was subjected to a series of studies to determine its future. The Government's official BLMC enquiry, led by Lord Ryder, suggested that BLMC's strategy was sound, but required huge state investment to improve productivity by providing mechanisation and improving labour relations. Despite the effective nationalisation of BLMC as British Leyland (BL) in 1975, the recovery never happened. Chrysler sold its European interests (including those in the UK) to Peugeot in 1978, to allow it to concentrate on its own difficulties in the United States. The UK interests were renamed Peugeot-Talbot, with production of the Chrysler-developed cars continuing, with the last Rootes-developed car, the Avenger, being discontinued in 1981. Peugeot also developed a saloon version of the Alpine called the Solara, and also launched the larger Tagora, which had been in development by Chrysler when it sold its European operations. It also replaced the entry-level Sunbeam with the Peugeot based Samba in 1981. As in most other developed countries, the 1970s saw major changes to the cars produced in the UK. Front-wheel drive, which had been pioneered by BMC on several new models between 1959 and 1965, now became a common feature on family cars after decades of producing only rear-wheel drive models. The hatchback bodystyle, which had debuted in Europe on the French Renault 16