Easy I know but you need to learn to let it ride. As for putting fuel in, I chuck in over £80 a week and this either the zed (when its working) or the Landy on the weekly commute.
Getting a smaller car is not the answer as you'll only push it hard to get the level of performance you crave for. False economy. Stick to the zed, learn to drive it differently, economically and every now and then hit the loud pedal in the right places