I was checking training times, engines, trainer brand names and then fuel useage for new students to solo. I discovered that in our club that the fuel useage used during training was remarkably similiar. The amount used for a standard 40 sized trainer like an SIG LT40 or a CG Eagle2 with a standard 40/46 engine worked out to between 3 1/2 gal. and 4 gallons of fuel. Some pilots completed their wings by burning 3 1/2 gallons fuel and almost all the new students passed their wings test before they had burned their 4th gallon of fuel. The few that hadn't passed their wings by then had problems due to poor engine choices or poor trainer plane choices.
Finicky engines or trying to learn on faster more responsive planes such as an Avistar may increase the required training time. This could be handy to know because now you can work out approx. how much your training flights will cost. To complete wings traing at our club basically you will have to be able to start the engine, and get it properly adjusted. You will have to be able to taxi out and do a nice take off. You will then have to be able to demonstrate both left hand and right hand figure eights. Then you will have to demonstrate a smooth controlled loop. Then you will have to cut the throttle to idle, pull the nose of the plane up until it stalls and then do a nice landing from that point without increasing the throttle. This simulates a deadstick landing. Have fun, Fast!