Mine's the 2.2 TDi, I think the lowest is around 33 - probably with the roofbox on it and loaded up. We managed to hit 62 as a high the other day but that was having just reset the SID and pretty much down hill with the wind behind us!!
2003 model 9-3 Aero automatic. 34 mpg is very best! 25 mpg around town, 28.2 mpg when giving it stick on an empty motorway. I think my old 9-5 auto did more than 40 mph on a long motorway cruise, nearly 500 miles on a tank. (But 350 miles of everyday driving was more normal!).
Never got it above 31mpg. Normally hovers around 29-30 and this is on my 22 mile commute travelling at 80mph. Really thought it would be better than that.