We bought an '04 SL 2WD about a month ago. With our 50/50 highway/street driving we've been getting only 18 MPG. I verified this by calculting the gas mileage myself. It seems that the number the MO gives on the display is a little optimistic. Anyway, I was just wondering what kind of mileage you guys are getting. Some people here are reporting 20+ MPG in comined driving, and I am wondering why we're not getting it. The MO is no Hummer, but it is still one thirsty machine compared to my late VW Golf. TIA.