If the 2020 Slingshot were an automobile, it would be considered a significant update. The original 2.4-liter inline-four from GM was never a particularly exciting or memorable engine when it was in a Chevy, and it wasn’t doing the Slingshot any favors either, so it was swapped out for a 2.0-liter I-4 made by Polaris. Instead of falling on its face at high rpm like the previous engine, it revs higher and produces its greatest power at redline. Additionally, it produces more horsepower, up from 173 to 178 in the base SL trim and 203 in the top-of-the-line R trim. Although it produces less torque—120 and 144 lb-ft, respectively—in a car with a reported curb weight under 1,700 pounds, it doesn’t really matter.