Hey OleAvalon, I do not have a CEL on and O/D is always on. The rear brake pads were replaced in '10 and the fluid was changed in '12. There is never a smell after I am done driving. I drive in Arlington, Tx (Dallas). I make 5 minute drives to my HS daily and other 10-15 minute drives, nothing too far. When I fill my tank, the range only shows about 215 miles maximum, and has been that way since I bought the vehicle. Looking at the CarFax, it looks like the spark plugs have never been replaced and the car has a bit over 235k miles. Also, I park in my garage at all times. Thanks.