Find one with at least the "Europe" package (includes electric windows,
half-leather, airco etc etc)
Often the ash-tray is broken in a second hand V40; try it out by pushing it.
Also the fase 1 often has scales; the blanc laquer peels, on the center
dashboard.
The drivers armsupport is standard a bit weak. After a couple of years it
will break off when leaning a bit to hard on it. The repair set is a quite a
bit stronger version than the original.
I had the engine checked by my garage, since I'm not into engines.
For the rest: great car!
Drive one myself and have been looking for one for approx 5 months before I
found the one I'm driving now
Regarding the diesel engine; I think fase 1 was supplied by renault.
From fase 2 they were Volvo's own make.
Not sure about the above though. Maybe someone can give better details on
this.
Bart