Ford Thunderbird developing a new market segment, the personal luxury car. In 1958, the Thunderbird gained a second row of seats. Succeeding generations became larger until the line was downsized in 1977, again in 1980, and once again in 1983. Sales were good until the 1990s, when large 2-door coupes became unpopular. Initial production ceased at the end of 1997. In 2002, production of the Thunderbird started again; a revived 2-seat model was launched which was available through the end of the 2005 model year. From its introduction in 1955 to its final phaseout in 2005, Ford produced over 4.4 million Thunderbirds.
Triumph Thunderbird into the US market. The 'Thunderbird' name and retro styling recalls the original Triumph company's golden years of the 1960s. It was the first "classic" Triumph to be produced by the resurgent company. The engine, redesigned to give a period look and de-tuned for more torque at lower rpm, was a variant of the 885 cc triple engine. Peak power was down to from . Several variants of the Thunderbird were produced, Triumph T309TT Legend, Triumph T309RC Adventurer, and the Triumph T309RD Thunderbird Sport, which produced a claimed 82 bhp. The Thunderbird was produced until 2003 and the Thunderbird Sport