The family made a journey from the Upper Peninsula to Detroit. We traveled along two lane highway to the Mackinac Bridge for a total distance of 188 miles. The truck averaged 51 MPH and finished with 31.6 MPG. From the bridge to Detroit (around 300 miles), the truck speed was 71 MPH and averaged 29.3 MPG. The total MPG was 29.6. The truck ran very well and the CEL did not come on.