2000 323i w/52k
lately I've noticed sulfur smell (sometimes no relation to driving hard, etc)
also, MPG display is indicating that I'm getting 5.9 mpg which seems to be
right because I'm going thru gas very fast (not cheap gas either)
Is this a catalyc (sp?) problem, gas prob? any way to verify before bringing it in? I just had an oil change and the car seems to be running rougher than it should.
Any help would be greatly appreciated...esp since I am now out of warranty...