Thanks for the responses. I will keep mileage info etc. to let you know mileage with the extra weight. Currently drive 100 miles per day to work and constantly get 29 miles to the gallon. But that is with just myself in the car. I am sure that will go down with four of us in the car.

By the way enjoy the site. I visited this site before purchasing my HHR, it was very helpful in making the decision.

 

Retuned last week from Trip. HHR did great. 1120 lbs of people and probably another 100 lbs in Luggage. Got 28 MPG on the trip. Outstanding. Inflated tires to Cold PSI of 35 lbs. No Problems. I did baby the trans when starting off at stop lights etc. But really impressed with the HHR.