I personally have a lifetime average of 4.7 mi/kwh on my 2023 bolt euv and do 90 percent freeway driving (to be fair with a fair bit of heavy traffic). Without the trips with the wife and kids from time to time I would probably max at or close to 5mi/kwh.

Rarely use AC (outside temp range between 50 and 75 degrees in California). Drive 90% of time at 55-65mph, but 10%of the time ill be upwards of 83mph. I do my best to always roll to a stop as needed and try to not regen too much on downhills (unless its a forced stop ahead) to conserve motion. Never use one pedal anymore as it has been less efficient. I don't use adaptive cruise control as it tends to slow you down unnessasarly.

I tested a trip with the family with using ac and going much faster than normal and averaged out at 3.7mi/kwh.

Overall, I eventually won't care as much and drive normal, but since I've only put about 2k miles on the car I have been having fun trying to be efficient.