Re: 159 2.4 JTDm Fuel Consumption
I've just done a full tank of diesel in my 2.4 159 and it worked out at 31mpg. This is mostly town driving over the Xmas period with some motorway driving for work since Weds. I would expect 35 ish from now on doing motorway work. I think 47mpg for the BMW is very optomistic - even with their efficient dtnamics I'm sure it wouldn't do that, plus the trip computer imo isn't as accurate as calculating it yourself brim to brim.
On an enthusiasts note I'd choose the Alfa, I'm biased but having just bought one for the first time I can safely say I'm smitten with mine, and the extra fuel consumption over my Astra (1.9 CDTi - same engine as the 159 1.9) it is worth every penny.
My wife says that Alfas aren't a matter of life and death. I agreed, but then she went and bought one!!