One fascinating aspect of the automobile world is how many different engine sizes and configurations are available. From the large 16-cylinder 8.0L under the hood of Bugatti Veyron to the compact 1.6L three-cylinder powering the GR Corolla, many of these powerplants can surprise drivers — especially three-cylinder engines that make more power than you'd expect from a V6. Audi's 2026 RS 3, packed with a 2.5L five-cylinder engine, is one of the few current examples on the market with this unique setup. In 1974, automakers like Mercedes were trying to squeeze out more power from their four-cylinder engines. One of the factors that didn't help the five-cylinder, especially early on, was that it wasn't very compatible with a carburetor setup.