Oldsmobile Cutlass Quad 442
One of the most highly coveted Oldsmobiles of the 1990s was a car that you’d never expect. It was the Cutlass Quad 442, and it was based on a fairly basic design. But GM went the extra mile and designed an engine specifically for this model. The Quad 442 was successful in the racing circuit, which is what the car was designed for (via Hot Cars).
The performance of the turbocharged four-cylinder engine rivaled the fastest sports cars of the time. There were only 241 of these cars built so you’ll seldom see one on the road anymore. But the engineering that went under the hood of this car was leaps and bounds ahead of the competition.