That may be true but if successful the LR4 should get the 3.0 V6 diesel we get here, it has 255bhp and does mid 30s to a real gallon of fuel.
The best thing i've heard from people who had petrol RR's and changed to the diesel ones is the far larger range to a tank, without losing much of the performance of the petrol version.
Wonder if the SDV8 models will also appear in time, those engines are superb in the L405 model!