The Alfa Romeo 158/159 (the Alfetta), is one of the most successful racing cars ever produced. The 158 and its derivative, the 159, took 47 wins from 54 Grands Prix. It has a 1.5 litre straight-8 supercharged engine. Its first appearance was in 1937 in the voiturette class of 1500 cc yet the car became eligible for the new Formula One introduced in 1947 which, in the hands of drivers such as Nino Farina, Juan-Manuel Fangio and Luigi Fagioli, it dominated for the first two seasons. The car won every race in which it competed during that first season of Formula One. That a car originating in 1938 was so victorious was extraordinary. The 159 was produced in 1951 with a new rear suspension, a De-Dion axle and an engine producing 420 bhp at 9600 rpm. This power from a small engine with a big supercharger made for poor fuel consumption – 1 1/2 mpg compared to the Talbot-Lagos at 10 mpg. The British Grand Prix at Silverstone was the first Formula One Grand Prix not won by an Alfa because Fangio and Farina both had to stop twice to re-fuel and the Ferrari of José Froilán González would win the race, with Fangio second. The Alfa had the edge on performance and with wins in Switzerland, France and Spain Fangio won his first of five championships that year.