Polestar Cranks up XC90 T8 into Most Powerful Volvo Ever By Stephen Elmer Jun 14 2016 Share this Article Tweet Polestar is opening the performance tap on the Volvo XC90 T8 Twin Engine, making it the most powerful Volvo model ever. Continue Reading... Filed under: Featured Articles SUVs Swedish VolvoTags: Volvo, Volvo XC90 Polestar, Volvo XC90 T8 Twin Engine