I've owned the highline for a about 3 months now and I love it. The only thing that's bothering me is the consumption. I drive the car really carefully but I can't seem to get it above 30. Even on long motorway journies, when I'm cruising about 70-80, the car is only returning an average of 29mpg. I've heard loads of stories of people getting up to 40mpg but I'm really struggling to get anywhere near. The car is completely standard. I was wondering if fitting an induction kit would help to make the engine breathe easier. Does anyone have any other suggestions?