Originally Posted by elbles
dtraill27, I obviously don't own a 128, but I'd be surprised if it were to beat the GTI on fuel economy. I've done ~48,000 miles in 2.5 years (~80 miles/day), and have averaged 27.3 MPG (not highway, mostly 45 MPH backroads, and I probably still drive like a 16-year-old, hah). I personally wouldn't care if it were a little lower, but I wouldn't expect a 3.0 liter inline 6 to go up in mileage.
You are right, I average 24mpg with my 128i manual, my boss, who has the same commute, averages 27-28mpg with his Audi A3 2.0T (manual too). He says he has a pretty constant mileage with it regardless the driving style while I can definitely see a huge difference based on my driving style, traffic and type of road. The 128i is not a winner if mileage is your main concern, it is not bad but it is not impressive either. I think the 135i is pretty similar to the 128i as far as mileage is concerned.
128i manual, AW, Boston Terra Leather, Sport package, Premium Package, Cold Weather Package, HK sound