It's 29.84" long, 22.26" wide, 13.79" high, has an 18.92" wheelbase and 4" of ground clearance. For comparison the Redcat Rampage MT 1/5th monster truck is 29.13" long, 23.62" wide, 13.78" high, has a 20.31" wheelbase and 2.83" of ground clearance.
I'm definitely not a traxxas fanboy but I would say it's a 1/5th.