New AMG 2.0 Liter makes 416 hp!

[Idaho2018GTPremium]

And I thought the Volvo R-design 2.0 liter Polestar was pretty impressive for it's displacement. The tuned 2.0 liter Volvo T6 makes 330 hp from the factory (316 un-tuned) for a very solid 165 hp/ liter. My wife has a '16 XC90 T6i that is 316 hp with 2.0 liters and runs pretty well.

https://www.caranddriver.com/news/a27813840/mercedes-amg-m139-four-cylinder-engine-specs/

Very impressive: 208 hp/ liter.

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[Niz55]

Amazing. Imagine if Mercedes built a 5.2L voodoo motor. 600hp 10k rpm.