8: Hyundai Genesis 2.0T
The Genesis was from a new generation of sports cars. Hyundai was trying to step out of just being an affordable car maker and create something more. The standard 2.0T was an exciting engine in a lot of ways. But the Genesis would have been a lot better if Hyundai included the V8 powerplant sold in its sedan.
The V8 was perhaps one of the most notable engines of the last decade and it would have given Hyundai a real chance. Although there have been several popular incarnations of the Genesis since then. The 2.0T was one of the resounding successes for the brand. We just wish Hyundai would have offered the V8 option in the Genesis Coupe.