Maserati 250F (1957) Juan Manuel Fangio – Despite just eight grand prix wins and a single drivers' title, the paucity of results makes no difference to the 250F's reputation as one of the finest and most graceful F1 cars ever built.
Lotus 25 (1963) Jim Clark – Introduced halfway through 1962, the Lotus 25 revolutionized racing car construction with the "monocoque" chassis.
Brabham BT20 (1966) Jack Brabham – Initially using a BT19 (almost identical to the BT20,) Brabham won four grands prix to take his third title and become the first -- and in all probability -- the only man to win a championship in a car bearing his own name.
The basic profile of F1 cars was altered forever in 1970 when Colin Chapman produced the Lotus 72. Amazingly, the Lotus 72 continued to be raced by the works team and privateers into 1975, five years after its conception.
McLaren M23 (1974) Emerson Fittipaldi – Strength, simplicity and integrity throughout the M23's wedge-shape design brought Emerson Fittipaldi the title in 1974...
McLaren M23 (1976) James Hunt – ... before James Hunt replaced the Brazilian and seized the title by a single point from Nicki Lauda two years later.
Lotus 79 (1978) Mario Andretti – Christened "Black Beauty" because of its elegant lines and black and gold colors, the Lotus 79 redefined F1 car design and performance.
McLaren MP4/1 (1981) John Watson – The MP4/1 was complex but immensely strong and light -- the two perpetual overarching aims in racing car design.