Koenigsegg’s 2 Liter Engine with 600 HP

Koenigsegg calls the engine the Tiny Friendly Giant, or TFG for short, and it’s an apt name. The TFG is a 2.0-liter twin-turbo three-cylinder that makes 600 horsepower. At 300 horsepower per liter, the TFG’s specific output is far higher than anything ever seen in a road car. Koenigsegg says this is “light-years ahead of any other production three-cylinder today,” and he’s not wrong: The next most powerful triple is the 268-hp engine in the Toyota GR Yaris.

https://www.roadandtrack.com/new-cars/car-technology/a31451281/koenigsegg-gemera-engine-specs-analysis/