I have had the same problem with my 2000 'tour for over 2yrs. I have tried to explan it over and over to my dealership with no fix what so ever!!! I tried plugs and wires with no luck. The dealer replaced the every sensor on the car except the EGR and O2 sensors. Still runs the same but I'm getting 30+ MPG. Mine also "stumbles" when you slow down to around 35-40 mph for a on/off ramp-annoying as hell!!!Does yours??? Maybe if you can fix yours it would help me out too.