Be honest for the milage your doing, stick with the petrol engine. I have just put the Range Rover off the road for the winter, needs a sort out after five years of abuse, and got a Discovery 200tdi. Quite honestly regreting it already, after three days the engine is a lousy slow revving pice of S***. the turbo lag is measured on a calander! And with no anti roll bars the handling ^&*(££"$