The flagship model will be the 740e, which will come in both short- and long-wheelbase forms. These will be two-wheel drive although the LWB variant will have four-wheel drive in the 740Le xDrive version. Figures you want are: 321bhp, 369lb ft of torque, 134.5mpg and CO2 emissions of 49g/km. In electric-only mode, this large petrol hybrid can cover 25 miles.