16. Buick GNX
The Buick GNX, produced in 1987, was a limited-edition powerhouse that shattered the stereotype of Buick’s vehicles as mere “Grandma’s cars.” (motortrend.com) Equipped with a turbocharged 3.8-liter V6 engine, it delivered 276 horsepower and 360 lb-ft of torque, enabling a 0-60 mph acceleration in approximately 4.5 seconds. (barrett-jackson.com) This performance rivaled that of contemporary supercars, making the GNX a standout in Buick’s lineup. (autoevolution.com)