Originally Posted by jamesy628
I have had my SEL for a month now and do about 60/40 City/Highway driving and am not getting over 25 mpg. Prior to adding highwaymiles in, I was getting 15 mpg with 100% city driving.
Is there something wrong that I should bring up with my dealer? Is it just because I am in constant stop and go or because it is winter?
Driving conditions, driving style, temperature, terrain, wind, winter gas all make a huge difference in fuel economy. Try this: get to a reasonably level highway where you can hold a constant speed for a fair distance. Set the cruise control at 60 moh and reset the mpg part of the trip computer. After 5 miles or so you should show average mpg in the high 30s. If so, your car is in all likelihood fine; your disappointing mpg is because of your driving conditions or style.
Unless you have a sticking brake or grossly under inflated tires, there are a very limited number of mpg harmful things that can be wrong without the car throwing a code.