Its fine for jumping pretty stable in the air. It only guzzles at full throttle, and normal bashing driving oround the yard, you only need about half to two thrids of the power, and you could probably get close to 15 mins. It has a really steep power band though. 4 litres a weekends is plenty, lots of driving out of that. Its quite powerful. How does the rustler 2.5 do on gas? Must be horrible. To race competitly you must have a .12 or .15 engine, unless there is a .18 class. Othre thatn that, look for some titanium turnbuckles, those are the only thing ive broken. When you break it, replace it with alum.