Dear All,   My wife's car seems to have the following problem.   When stationary - say at traffic lights - and the heater fan is blowing (hot or cold setting it doesn't make a difference) there is always a  smell of exhaust fumes entering the passenger compartment. I have checked that the air intake (presumably the one from the from of the car above the left hand side of the radiator - when looking at the car from in front of it) appears intack.   We get the smell even when there are no other cars around.   Please advise whether this is a 'quirk' of the Saxo or whether it indicates something that can be sorted out - and if so an idea of the source of the problem would help.   For the records I think it is the base 5 door desire model 'Y' reg.   Thanks in advance of any assistance.   Malcolm