The stock maxx tank is 125cc, and with a small block engine you can run anywhere form 10-20, 10 being mostly raceing or serious bashing, and 20 being just dinking around on the track or climbing hills!! I get about 8mins out of my truck before needing to re-fuel, but I run a fuel guzzling .247, soon to be Picco .26
in about 3 or 4 more gallons!!