was added to the lineup. European outputs were DIN for the 2.0 and the 2.4 inline-sixes. European buyers were attracted to the Laurel for its overall reliability, low price, and ample equipment. Datsun-Nissan South Africa also developed a two-litre four-cylinder option not offered elsewhere to suit local needs with a lower-cost, torquier engine than the two-litre six sold elsewhere. The L20B engine offered and was paired with somewhat lower equipment than the 280L sold alongside it. November 1978 brought minor changes to the Laurel, including squaring off of the front headlights. The highest trim level, "Medalist", received air conditioning in addition to its OHC four-cylinder two-litre diesel engine. The 1800 cc cars switched to the newer Z18 crossflow engine and all Laurels now met the Showa 53 (1979) gasoline vehicle emission regulations. Later, in October 1979, a two-litre four-cylinder gasoline option (Z20-series) was added in several markets. Also new were the options of automatic transmission and the SGL equipment grade on diesel vehicles. In February 1980 an electric sunroof was added to the hardtop version of the Medalist. This was the first year in which a sunroof was a model option. In July 1980 a special limited edition "gold medalist" top-of-the-line trim was released. Fourth generation (C31; 1980–1984) The C31 model, introduced in November 1980, was the first model that was only available in a four-door form, either as a sedan or hardtop. Engines for the C31 were 1.8-liter, 2.0-liter L20, 2.4-liter L24 gasoline, and 2.8-liter diesel. The coupé was replaced by the new Nissan Leopard F30. The Toyota competitor was the Cresta hardtop and the Chaser sedan. November 1982 saw the introduction of the Limited "Givenchy Version" with Hubert de Givenchy doing the TV commercials in Japan, borrowing a marketing concept for an American luxury coupe, the Lincoln Continental Mark IV. In 1981, the Nissan Laurel Spirit was offered as a smaller alternative to the Laurel, while still offering the luxury content of the larger car. Development Supervisor, Itirou Makoto Sakurai, was in charge of developing the Laurel together with the Skyline. The Laurel's redesign was carried out in a European style and tone. The coefficient of drag (Cd value) of the four-door hardtop is 0.38. The lowest-priced Z18 is a four-cylinder engine, as is the 2-litre Z20. The L20-series are inline-six cylinder models, also available in fuel injected L20E type, and as the turbocharged L20ET - the first