Mercedes-AMG’s 671-HP Compact Car Sets New ‘Ring Record, Still Slower Than M2 CS

The new Mercedes-AMG CLA 45 4Matic+ debuted at the recent Goodwood Festival of Speed as a revolutionary upgrade for the compact sport sedan. The new fully electric model packs 671 horsepower from three motors, versus 416 hp from the earlier version’s turbocharged 2.0-liter four-cylinder.