I also find that the gas mileage on my '98 T depends on how I drive. Commuting 29 miles each way to work I get between 37 and 41 mpg depending on whether I accelerate at the same rate as the cages or whether I smoke the cages. On the interstates I get 34-36 mpg going 75-80 mph but 1 to 2 mpg higher if I travel at 65-70. Funnily I get the best gas mileage when I am in the twisties. Despite getting on the throttle hard coming out of each turn I get 42-43 mpg on roads like the Dragon.