And I know it is childish, but I did used to love it when people didn't realise there was a back door.![]()
Never gets old watching people freeze when they notice there's no door-handle.
The OP will be looking at the 2.5V6, the 3.2 is only in the GTA, and you don't get them for 3-4k.
Check the service history is OK. The MAFs (a Bosch unit) are bad, but finding an original sensor past 100,000 and still working fine is common. Single figure mpg would be indicative of a fault, or mad driving. Check for corrosion on the inner arches and make sure the heater works as you'd expect.
what mpg am i realistically going to see?
Cambelts do not need to be changed every 3 years or 36k, this is the interval from a twinspark engine. The official service interval for these still applies at 5 years or 70k, although most places seem to recommend between 4-5 years and 50k.
Alfa issued an official service bulletin re: the cambelts and getting them changed much earlier than normal...