The B8 S4 replaced the earlier 4.2-liter V8 with a 3.0-liter TFSI V6 using an Eaton supercharger. Production began in November 2008, and in North America only the sedan was sold. Ours is a 2015 S4 Premium Plus sedan in Monsoon Gray Metallic, with a manual gearbox. Heavily modified, it has an exhaust, an APR Stage 2 ECU tune and upgraded supercharger and drive pulleys.