BMW’s flagship sedan receives a facelift treatment for 2013. Newly upgraded engine choices include including BMW’s 3-liter inline 6 TwinPower Turbo diesel engine and the 2nd-gen BMW ActivHybrid 7 power-plant, among others. An eight speed automatic transmission is now standard equipment on all models. Auto Start-Stop, Brake Energy Regeneration, and Driving Dynamics Control with ECO […]