I have a 2025 ram rebel sso. my fuel economy is garbage I have around 1500 miles now and I'm only getting 10-13 mpg mixed with a max maybe 14 highway. towing I got 9 mpg on the highway at around 70 mph with an empty aluminum trailer weighing 1100 lbs I'm not hard on my truck this is all easy light foot driving. is this par for the coarse or could there be something wrong