To compete with the rapidly changing automobile market in the 1970s, Buick introduced the Regal in 1973. The Buick Regal was a special coupe designed by the American car manufacturer to match some its competitors like the Oldsmobile Cutlass Supreme and Pontiac Grand Prix. The production of the Buick Regal in the US lasted for 31 years until stopped in 1994, but it was reintroduced in 2009 as an upscale sport sedan.
1973 - 1977: First generation
The first design of the Buick Regal resembled some features of the Buick Century. However, the Regal had fashionable opera windows instead of the traditional roll-down windows of the Century, and the grille and tail lights lenses of the Regal were also different. The standard engine on the Regal coupe from 1973 to 1974 was the Buick 350 V8 engine, while the 455 cu. in. V8 engine was the larger option. In 1975, the engine for the vehicle was replaced with a 231 cu. in. V6 engine.
1978 - 1987: Second generation
Entering its second generation, the Buick Regal continued to have a more compact engine size. From 231 cu. in., the new engine on the Buick became a 196 cu. in. V6 engine, while a 3.8L turbocharged V6 engine was designed for automatic transmission models. In 1981, a major change in the exterior design gave the Buick Regal an aerodynamic profile. This eventually led to the Regal Grand National, T-Type, and GNX trim lines. The Grand National was the first one produced, and it had a 4.1L V6 engine with 125 hp. It was renamed as the T-Type in 1983, and only 3,732 units of the T-Type were produced. The GNX replaced the T-Type in 1987.
1988 - 1996: Third generation
From the previous generation of high-performance models, the Buick Regal returned to its luxury sedan style with a GM W platform. Three trim lines were offered, the Custom, Limited, and Gran Sport. Neither of the models had a V8 engine nor a turbocharger for the V6 engine. Buick focused more on functionality and safety as a driver's side airbag, standard power windows, and anti-lock braking system were included in the car.
1997 - 2004: Fourth generation
The fourth generation of the Buick Regal saw its resemblance once more with the Buick Century, and their differences are mostly cosmetic. The Regal had a fancier trim, heated leather seats which are optional features for the Century, and an expansive interior surface. The supercharged Buick GS was introduced in 1997, and it had a 240-horsepower engine and 380 foot-pounds of torque.
2009 - present: Fifth generation
When the final Buick Regal was produced in North America in 2004, it was replaced by the Buick Lacrosse. Five years later, the Regal was reintroduced to the US market. Currently it has two variants, the CXL that has a 2.4L Ecotec direct-injected engine, the CXL Turbo that has a turbocharged 2.0L direct-injected engine, and the GS that has a 2.0L engine and a six-speed manual transmission. Buick Regal models from 2012 were designed with an eAssist technology that assists the driver with regenerative braking and engine start and stop.