Fuel-efficient cars will save you money at the pump, but with rising gas prices people with smaller vehicles may find now is the time to trade them in. Used car dealers have found an increased demand for vehicles with a high fuel-economy, meaning they'll likely pay motorists top dollar for their fuel-sipping used car, NBC affiliate WMBF reports.

The market is already a good one for people looking to trade in their cars. There has been a shortage of used vehicles recently due to drivers holding on to their cars longer than before, and dealers are looking to add inventory one word possible. Plus, with gas prices approaching $4 across the country, they are even more eager to add a fuel-efficient rides to their fleet.

"Used vehicles still have good resale value right now because the market is demanding used cars, period, across the board, but fuel efficient cars as we trade them in right now are going to be worth more, and they're going to be worth more in the future," car dealer Greg Smith told the news channel.

Though having a fuel-efficient car will put you in a good place if you're looking to trade in, you should still take the time to make sure your car is as attractive as possible. There are easy steps, such as washing and cleaning both the exterior and interior, but you should also do some research on just how much your car is worth to ensure you get a good deal.

Whether your car has high or low gas mileage, New Jersey State Auto Auction is a great place to go to trade in your ride. Thanks to it being an Autotrader.com Trade In Marketplace Dealership, NJ Auto offers you a fair, accurate appraisal in no time.