9. Quad 4 Engine: Engineering Excellence
The introduction of the Quad 4 engine in 1987 marked another technological leap for Oldsmobile. This advanced four-cylinder engine delivered impressive horsepower and efficiency, outpacing Cadillac’s efforts in compact, high-performance engines for the U.S. luxury market. The Quad 4’s engineering excellence made Oldsmobile a leader in modern powertrain development and demonstrated the brand’s ongoing commitment to innovation, even as Cadillac stuck with more traditional engine choices. More on Quad 4.