Presented at the Motor Show 1961 in London, the British two-seater Roadster Triumph TR4 meets all the design challenges of 1960 with an impressive, sleek design of Michelotti, who survived for 15 years until his descendants, The TR6 was set in 1976. Two years before the classic Triumph Herald sedan, which Bodylines by Italian Giovanni Michelotti designed led to a great commercial success, which lasted started in the 1970s. In this sense, Triumph, which had just been bought by Leyland Motors, Michelotti was asked to replace it with a new sports car on Aging TR3, whose form in 1953 and earlier TR2.

Characterized by its curved body and headlights hood to cover the chrome grille, the new car is mechanically similar to TR3 but the new technology was a four-speed manual transmission was installed synchronized with all the optional overdrive. This meant that although TR4 is essentially the same four-cylinder overhead valve 2138cc than its predecessor, it was a foot longer and has a longer wheelbase. The TR4 produces 100 horsepower at 4600 rpm and reaches a top speed of 102 miles per hour. There was an option for the car with the engine of 1991cc to buy old racing sports cars 2000cc class. The car had good performance for its time and could accelerate from 0 to 60 in 11 seconds and an average of 25 miles per gallon. In 1965, after selling 40,000 cars off the TR4 TR4A has been updated.

Although outwardly similar looking, except for a dash of walnut veneer is very different mechanical TR4A with the coming of semi-trailing axle rear arm, incorporating a new rear axle, which was tested on the Triumph 2000 sedan since 1962. The link aging engine was also observed with the addition of a new camshaft design that updates the vehicle speed increases up to 110 mph.
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