As others said depends on your driving. I drive mine like normal which includes running 75 to 79 on the interstate. I go with the flow and try and avoid passing or being passed by too many folks. I also live in a hilly area which does impact the range. I'm usually in the 3.4 to 3.6 range on efficiency when it's in the lower 60s. I drive it like a normal car but do one pedal driving a lot. I don't want anyone running into the back of my vehicle so tend to stop somewhat gingerly but not super slow. The power is really nice and I will try it out from time to time. The Bolt is a fun car. Mine will say 185 miles (middle #) when charged to 95%. It's a 2020 with only a couple of thousand miles on it. How fast you drive does make a difference. Last few days I've done more interstate driving than normal. If I take secondary roads and keep speed down it does much better. Don't worry to much about what the range says, IMO more important to know how many miles per KWH and compare with your driving and range. You should check the battery to make sure it is OK. If you are somewhat tech savvy there are a couple of good threads about how to use the OBDII connector and a program called Torque Pro to see lots of information about the battery and other functions.