I've never reset Trip B. Over the 10 months we've owned our Gravity GT we've averaged 2.98 miles/kWh. Ours is the 5-seater with 21"/22" wheels, so I think EPA is 407. Taking our average of 2.98 times the 123 kwH battery pack, we're looking at 367 miles of range. Kind of disappointing, to be honest, but it is what it is. We don't drive it hard, but do a lot of short trips, mostly rural roads and highways, with occasional long road trips at 70mph.
Note: The tire pressure display on the dash always read 42 psi. When I put an actual tire gauge on them, they were mostly 38 psi. Not sure how much of a difference that might make.