Restyled 2021 Maserati Quattroporte offers a potent new performance model By: MarketWatch March 02, 2021 at 05:05 AM EST The big news for 2021 is the debut of the Quattroporte Trofeo, which is powered by a twin-turbo 3.8-liter V8 with 580 horsepower. Read More >> Related Stocks: Apple Ferrari N.V. Porsche Auto ADR Sirius XM Holdings