Hoping the tire wear & fuel consumption isn't indicative of what we will see in the future endurance events.
Had to fill the tank after 20 miles racing, something like 2.4 mpg.
The fuel/tire wear scales with the race, so the longer the race, the more MPG you will get.
On another note: Just did the Le Mans 24 minute race, and won quite smoothly with a 2J. I kinda forgot that the 2J didn't have headlight when dusk came, but I just went with it. I had to use the map exclusively for navigation for a few laps, but it went suprisingly well. Ended up winning by 26 seconds, and I had to pit twice. High RPM turbo and RH tires all the way.