This is a re-post; I asked the same question in some thread and I guess it didn't get much visibility.
I seem to average just about 21 mpg in my new S60 (mostly freeway, moderate traffic). The car barely has 1000 miles on it and I know that new engines take a while till they break in and reach the stated mileage. It took about 4K miles in my other car and I think the improvement was around 15% or so. If this is any similar, 15% will barely put my freeway mileage around 24. This is still way lower than the 30 mpg I'm supposed to get. I use regular (89) gasoline, I guess using premium would improve the mileage a bit but again, it can't improve that much.
What average and freeway mileage do you S60 owners out there get? Should I be concerned and maybe take it in for testing or is this normal this early in the car's life?
J.