With the petrol Q2 engine being released after the diesel version, probably towards 2017, I wonder if they will be using the same engine being developed by VW.
http://www.carscoops.com/2016/02/new-15-liter-petrol-and-diesel-engines.html
http://www.carscoops.com/2016/02/new-15-liter-petrol-and-diesel-engines.html