Whether you're headed out on a long road trip or just loading up for a quick getaway, Consumer Reports has some packing tips that help you save at the pump.

First, try not to carry things on the roof. Car-top carriers and roof racks create unnecessary drag and reduce fuel efficiency.

Taking bikes along? Use a rear-mounted bike rack. They produce less wind resistance.

As for luggage...

"You really should make and effort to pare down and lighten the load," said Consumer Reports Jon Linkov. "And it's safest to take the heaviest items you have and push them as far forward as possible in the cargo area."

This will help handling.

And never stack cargo above seat level because it can come flying forward in a quick stop, not to mention you can't see out your rear-view mirror.

Another way to make your trip more fuel efficient-map it out ahead of time.

If you have GPS, that can help you find gas stations, ATMs and hotels-that can save wasted gas driving around looking for them