Audi has developed its fair share of iconic engines over the years, with one of the main ones coming to mind being its glorious naturally aspirated V10. This unit powered vehicles such as the Audi RS 6, R8 supercar, and even the Lamborghini Huracán before being retired in 2024. This engine was a little out of reach for most gearheads, however, so the one arguably more revered is the marque's turbocharged inline-five powerplant.