That's pretty good for those temps. I'm assuming still on stock tires? The best I did (I have lots of hills, valleys, mountains) was 3.0 on a 55 mile round trip. My drive is always brutally honest in terms of efficiency as I end up on the top of a mountain at 1400FT.So far, I've been very pleased. I predicted the GT would be slightly more efficient than my C40 based on what I was seeing, and was correct. I drove my C40 home on many of the same highways as I did my EV6 GT, and it averaged @37kwh/100mi. Converted, my GT averaged @36kwh/100mi (2.9mi/kwh). Everything about the car is excellent, but the efficiency is the real easter-egg. I've been driving it in MyDrive with SPORT+ as the setting for the motors, and in 30-40*f weather, without preconditioning, I am averaging 2.5mi/kwh (40kwh/100mi), whereas again, my C40 was typically in the low 40's.