The BMW 340i xDrive is a performance version of the 3 Series sedan by BMW. It comes standard with a 3.0-liter turbocharged 6-cylinder engine producing 335 horsepower and 330 lb-ft of torque. It is available with either manual or automatic transmission, and with either rear or all-wheel drive (xDrive). With xDrive, BMW claims the 340i can accelerate from 0-60 mph in 4.6 seconds. Standard features include adaptive xenon headlights, 18-inch alloy wheels, power front sport seats, and BMW's iDrive infotainment system.