Yes it might be right.
Mine gets 24-25 all hwy but the second you add city in the mix, my milage drops to 20-21 mixed.
What is your driving style? On my 128i vert...that was my garage queen...I was getting 16-18 mpg because I was just bopping around town and having FUN...especially at stoplights with the top down. Same engine so your milage isn't surprising.
Now when I occasionally did the long hwy commute to work in her, she would turn 28 mpg all day on the hwy.
Last edited by x3brian; 01-05-2013 at 12:37 AM.