Originally Posted by spearfish25

"City" is very arbitrary.

For example, driving around a suburb is considered 'city' but one might do 30-40mph for a good stretch between traffic lights. However, 'city' for me in downtown Chicago is stop and go driving with stop signs/lights every 100 feet. The gas mileage numbers you'll get in these two situations will vary greatly, yet they are both 'city' driving. Highway is a bit more standardized being that you have to be on a highway and expectedly doing about 65-75mph.