I have a 2004 AWD. I haven't been able do a manual check on the mileage yet so these are just computer readings, but is it normal for this vehicle to have the MPG drop so dramatically from 55 to 75mph? I can cruise on a flat road at 55 and get around 25-26mpg but anything higher than that and it drops like a rock. At 75mpg I am getting about 19-20mpg. That is worse than my 4.2l Chevy Trailblazer. I am running the recommended 89 octane.

Is there anyone that does PCM tunes for the pacificas? I got one on our other vehicle and it helped fuel mileage slightly but really woke up the potential of the car.

 

"I have a 2004 AWD" this is why the MPG is lower then u LIKE IT TO BE

 

At least you get decent MPG. I usually drive only 200 miles a week and that is to and from my daily parking at the MBTA spot where I commute into Boston and I only average 12.2 MPG! Gotta love stop and go traffic!