looking back on my time with my 200 and considering its mpg i have come to the conclusion that the is200 has a much smaller then average "sweet spot" regarding mpg ie the way you drive it to achieve sensible,ish mpg figures has to be constantly within such tight perameters that it is quite easy to wreck your figures with slightly too much right foot and also quite possible to drive in the "happy zone" almost by accident as the car seems most economical when driven in a very lexusy unhurried manner if that makes sense - this kind of makes sense when you see a lot of long term owners getting very consistant figures whilst cruising around in their their trusty steeds whereas relative newbies to the marque or model are possibly still seeing how the car performs and what it will or wont do performance wise - most cars i think have a wider margin wherein economical,ish figures are achieved - this theory is largely based on the fuel figures i got at the end of my relationship with my is