Hi Elle,

My answer is: Be easy on gas pedal, never "floor" it, no abrupt braking/ accelarating. Keep minimum extra things inside the HAH, firmly keep the brake at stop lights (no engine on and off repeatedly and unnecessarily) until traffic lights turn green, drive nicely to break-in the engine.

My HAH gets only a little bit over 3,000 miles. Yet I routinely get the EPA's MPG (30 MPG mixed driving). Expect to get more soon. I do not drive it much. So it is considered brand-new and is "pampered" under a cover in my garage most of the time to prevent from my wife's cat jumping on the hood.