We have found that our 3.5 V6 at 70mph is in the 22/23 mpg area , what kills it is the "bye bye nail it " traffic light Grand prix stuff , still worth it just to shut down a Range Rover sport , last Friday , fuel cost bearable , look on RRovers drivers face Priceless lol
, I know someone will say the RR is faster 0-60 or whatever but its reaction time off the lights that counts , and NO , that wasnt not in a town or built up area .and as far as im aware , there is no saying how fast you can get even to 30mph if thats the speed limit ?