If I was worried about mpg I would have a Peugot 106 diesel I havent a clue what my Mk 2 GS300 does to the gallon, I never check the computer thingy on the sat nav to find out. All I know is I get around 300 miles to each fill up (which is twice a week just to get to and from work), but more importantly I LOVE DRIVING THE CAR,
I've done the small diesel hatch thing in a vain atempt to save a few quid, I had it 2 weeks and sold it and bought something with a bit more comfort. Lets face it, if you want fuel economy, a Lexus isnt neccesarily the car for you. Now if you want great handling, quiet luxurious motoring, thats a different thing altogether. :D