AmateurDomestic

That's not to bad then, I have tried to stretch it's legs a bit more and the MPG seems a bit more favourable, hopefully should improve with the weather. Still an amazing car, but we sold the old RX300 because of the terrible fuel economy so we are hoping for at least a slight improvement.

Hi, it was on 24mpg since the last refuel and had done 100 miles to be delivered from Bedford to Surrey on the M1 and M25. I didn't think this was terrible, but not great either.

Thanks for all the replies, I think it may just be because I am not going far enough, most of my trips have been under a mile, drop off then come back up a hill. It seems to be do better when we are on flat ground and going further so we can use the momentum.

Thanks for your reply, we have a trip to Cambridge next week so we can see what figures we get for that, it may be that I am just using it as a run around at the moment.

Hi, We have just bought an '08 RX400h at the beginning of Jan. Since then on urban driving we are getting average MPG figures of somewhere between 14 and 21 mpg. We have owned the RX 300 and we used to get 21-23mpg so we are really baffled by this. I took a note of the mileage just to check back and we did 280 miles on a full tank till the fuel light came on. Using my calculations, a full tank is 17 gallons so maybe a 2 of that is in reserve. So that would be 280 miles on 15 gallons which is 18.6 average which checks back to the figures the car is giving me. I understand that when it is cold (as it has been recently) then it can use more, and that we live up a steep hill, but surely the braking on the way down should regenerate enough power to help. Is anyone else getting such poor MPG on their car, I'm just worried that there is a fault with the hybrid system and we only have 2 more months on the warranty.