BMW has revealed a new plug-in hybrid version of the X5. The xDrive40e combines the versatility of the large SUV, with BMW's eDrive technology for greater efficiency. A 2.0-litre petrol engine is paired with an electric motor for a total system output of 313bhp. 0-62 takes 6.8 seconds and the top speed is limited to 130mph, while fuel economy is as high as 85.6 mpg and CO2 emissions are as low as 77 g/km. The plug-in hybrid BMW X5 is set to go on sale in the Autumn. Prices have yet to be announced.