I have had mine for a few weeks now and it slowly takes a while getting used to the range. Many thanks can affect it. Turning the heating on reduced the range by about 15 miles. If you use it for 10-15 minutes, then turn it off, the range goes back up but less as it’s already used some of the battery. Using the regen mode is different settings also affects the range mildly. How quickly you press the accelerator and power it forward also has an impact. Gentle acceleration doesn’t affect that much. I had a full range in ECO at 179 last week and decided to test the car in sports mode for a few miles. It was so much fun. Instant torque and power. I only did around 10 miles but when put back in ECO mode, it didn’t show 169, rather 157. Meaning I used a little more juice out of the battery. It’s all relative and fun to play around with. Once you have settled and understand your driving habits, your environment and how you wish to behave with the car, you will be more comfortable with it.
p.s, my experience to date is I will give the car 9/10. Best bit of kit I have driven. I previously had a Mercedes E Class and the MG is more fun. It’s not premium class, but for what you get and how it performs and looks, it’s wonderful. Set your expectations right and you won’t be disappointed.