Just a reminder - everyone should pay attention to the location of the poster as well - difference in US and UK gallons can make the numbers seem very different. :wink:
For my 2007 M Roadster with under 10,000 kms on it, I am getting 11.8 l/100 km in daily driving. This is just over 19.9 miles per US gallon, and about 24 miles per UK gallon. I drive the car pretty hard every day, so I'm pleased with this.
Last summer I took the car on a drive down some secondary roads and with the cuise on at 100 km/hr I could get down to 9 l/100 km while cruising down the highway - that's 26 miles/US gallon, and 31 miles/UK gallon.
This all based on the computer BTW, so I realize it might not be that good in actual practice. However I'm really only concerned (if I can even say that really) with the comparison of how I'm driving the car day to day....
Cheers, Al
BTW conversion can be done here for thos who are interested.
http://www.convert-me.com/en/convert/fuel