The redesigned 2020 Porsche 911 retains the automaker's venerable styling DNA but receives upgrades in horsepower, a new interior layout inspired by 1970s models, and 21st century driving conveniences. The turbocharged, flat-six engine on the next-generation 911 Carrera S and 911 Carrera 4S produces 443 hp. That's an increase of 23 hp compared with the outgoing model. The 2020 911 Carrera S starts at $114,250, while the Carrera 4S starts at $121,650. Both prices include shipping. The models are expected to arrive at U.S. dealerships in the summer.