The Buick Century nameplate was revived for the 1973 model year on the rear-wheel drive intermediate A-body platform, which was redesigned for this year.
The name replaced Skylark for Buick's mid-sized cars.
The Century Regal coupe was added at the top of the model range, and later became a separate series, dropping the Century name.
It was available with two- and four-barrel versions of the Buick 350, putting out 150 and 175 hp (112 and 130 kW), respectively.
The 225 hp (168 kW) 455 was also an option.
The base Century and Century 350 coupes had a fastback roof with large rear quarter glass, while the Century Luxus featured a more formal notchback roofline with narrow opera windows.

By replacing the Skylark, the Century inherited the Gran Sport performance option.
The package was available with any engine and included upgraded suspension, additional instrumentation, and unique appearance treatment.
Dual exhaust increased output of the four-barrel 350 to 190 hp (140 kW).
While the Stage I 455 was somewhat diminished from its performance heyday due to emission controls, output was competitive for the era at 270 hp (201 kW) and 390 lb⋅ft (529 N⋅m).
A Saginaw three-speed manual was standard with either 350 engine.
A Muncie M-21 four-speed was available with either 350 or with the regular 455, while the Stage I required a Turbo-Hydramatic 400.

For 1975, the Luxus was renamed Century Custom.
The new 110 hp (82 kW) 231 V6 was installed as standard equipment along with a three-speed manual transmission on coupes and sedans, and the big-block 455 was no longer available.
The four-barrel 350 V8 became standard on station wagons.
A new landau top became available for fastback coupes that partially covered the rear quarter glass, giving an appearance similar to the formal-roof Century Custom.
A Century Special coupe was added to the lineup, using the fastback roofline.
The Special was marketed as an economy variant of the Century and was only available with the V6 engine.

In 1976, the US government legalized rectangular headlights (long commonplace in Europe), and Buick promptly added them to the Century, positioned side-by-side on coupes and stacked vertically on sedans.
Sedans received a taller, more-formal grille, while coupes got an angled, body-colored front end along with new bodyside sheetmetal that lacked the traditional "sweepspear".
The Gran Sport option was discontinued.

In 1977, the V6 engine was revised to be even-firing, and a 403 cu in (6.6 L) Oldsmobile V8 was added as an option for station wagons.

Buick Centuries were used in the 1975 and 1976 Indianapolis Motor Speedway as pace cars.
Buick introduced a 1975 Buick Century "Free Spirit" edition replica based on the Indy Pace Car for the public with patriotic graphic decals and the Buick Hawk on the hood.
This 1975 vehicle had a transmission shifter on the floor with bucket seats and "Hurst Hatch" T-tops installed.
The white exterior and blue/white interior was based on the 1975 two-door sheet metal.
The engine was a 350 V8, as opposed to the 455 V8 used on the actual Indy 500 Pace Car.
Alternatively, in 1976, Buick introduced the "Free Spirit" edition of the Indy Pace Car; it was downsized to the 1976 Special facelift sheet metal with a 231 V6.
The original Indy Pace Car had the turbocharged 231 V6.
The replica featured a rakish silver, black, and red paint job with black interior.
The vehicle had positive-traction differential.
The Buick Century nameplate was revived for the 1973 model year on the rear-wheel drive intermediate A-body platform, which was redesigned for this year. The name replaced Skylark for Buick's mid-sized cars. The Century Regal coupe was added at the top of the model range, and later became a separate series, dropping the Century name. It was available with two- and four-barrel versions of the Buick 350, putting out 150 and 175 hp (112 and 130 kW), respectively. The 225 hp (168 kW) 455 was also an option. The base Century and Century 350 coupes had a fastback roof with large rear quarter glass, while the Century Luxus featured a more formal notchback roofline with narrow opera windows.
By replacing the Skylark, the Century inherited the Gran Sport performance option. The package was available with any engine and included upgraded suspension, additional instrumentation, and unique appearance treatment. Dual exhaust increased output of the four-barrel 350 to 190 hp (140 kW). While the Stage I 455 was somewhat diminished from its performance heyday due to emission controls, output was competitive for the era at 270 hp (201 kW) and 390 lb⋅ft (529 N⋅m). A Saginaw three-speed manual was standard with either 350 engine. A Muncie M-21 four-speed was available with either 350 or with the regular 455, while the Stage I required a Turbo-Hydramatic 400.
For 1975, the Luxus was renamed Century Custom. The new 110 hp (82 kW) 231 V6 was installed as standard equipment along with a three-speed manual transmission on coupes and sedans, and the big-block 455 was no longer available. The four-barrel 350 V8 became standard on station wagons. A new landau top became available for fastback coupes that partially covered the rear quarter glass, giving an appearance similar to the formal-roof Century Custom. A Century Special coupe was added to the lineup, using the fastback roofline. The Special was marketed as an economy variant of the Century and was only available with the V6 engine.
In 1976, the US government legalized rectangular headlights (long commonplace in Europe), and Buick promptly added them to the Century, positioned side-by-side on coupes and stacked vertically on sedans. Sedans received a taller, more-formal grille, while coupes got an angled, body-colored front end along with new bodyside sheetmetal that lacked the traditional "sweepspear". The Gran Sport option was discontinued.
In 1977, the V6 engine was revised to be even-firing, and a 403 cu in (6.6 L) Oldsmobile V8 was added as an option for station wagons.
Buick Centuries were used in the 1975 and 1976 Indianapolis Motor Speedway as pace cars. Buick introduced a 1975 Buick Century "Free Spirit" edition replica based on the Indy Pace Car for the public with patriotic graphic decals and the Buick Hawk on the hood. This 1975 vehicle had a transmission shifter on the floor with bucket seats and "Hurst Hatch" T-tops installed. The white exterior and blue/white interior was based on the 1975 two-door sheet metal. The engine was a 350 V8, as opposed to the 455 V8 used on the actual Indy 500 Pace Car. Alternatively, in 1976, Buick introduced the "Free Spirit" edition of the Indy Pace Car; it was downsized to the 1976 Special facelift sheet metal with a 231 V6. The original Indy Pace Car had the turbocharged 231 V6. The replica featured a rakish silver, black, and red paint job with black interior. The vehicle had positive-traction differential.
Buick Century