chilkoot02

My only major complaint with my 02 Pathfinder is extremely poor fuel mileage during the winter 6 months.

Worst case is winter, short trips, very cold....15mpg US

Best case summer, highway, warm temps.....29mpg US

I've never heard of mileage swinging that much under different conditions.

BTW, in both cases it is moderate driving. If I was really booting it I'm sure it would be more like 10 and 20 mpg resectively

It's my only complaint in 3 1/2 years.

I'd be very interested to hear of other owner experience on fuel mileage, and very interested in any ideas to improve cold weather mileage.

I'm currently waiting for my dealer to get back to me regarding a possible upgrade (reprogramming) of the ECM which I'm hoping might provide an improvement.

Any comments appreciated.