I hope it gets better !!!
Right now, I have 1633 miles on mine, and this past weekend, I made a trip towing my boat, and one without.
Towing a 3300 lb boat 133 miles @ ~ 65 mph highway, with about 15% city below 35 mph, I averaged 10.6 (evic said 11.8).
Not towing, I drove 448 miles @ 70 mph ave, but ~ 25% of it was very hilly, and maybe 30 miles of in town stop & go with some very steep hills, I averaged 16.9 (evic said 18.1)
Normal daily driving (when I use it for that) is all stop & go, and I am averaging 10-11 mpg at best. I don't wring it out, and honestly I'm not even on the throttle as hard as I was with the chevy, but the mpg ain't really no better.
Now, these numbers are on par with the chevy I traded in on it based on the speeds/terrain, but still, I expected better than this. Best I ever got with the chevy was 19.2 highway, and I do feel if I had a highway trip with no hills, I could probably get that with this one.
True, since it isn't really any worse than the chevy, and I did pick up another 90 hp, and tons more comfort and features/room, it's kinda a wash.........but still......kinda disappointed right now. Especially when I can't even spin the tires for some satisfaction !!!!!!!
I'm also not real fond of the EVIC accuracy either, as on the chevy, it was always within .2 mpg of doing hand calcs, but this one seems to be off ~ 10% most of the time.