The latest monthly market report by Kelley Blue Book (KBB) indicates the price of used cars may soon begin to drop thanks to the decline in gas prices. As the cost of fuel drops, the demand for used fuel-efficient vehicles will as well. KBB expects the average price of small economic vehicles to drop about 1 to 2 percent over the summer.

"In 2011, fuel prices peaked in May at $3.97 per gallon before falling down to $3.20 per gallon by year end," said Alec Guttierez, senior market analyst of automotive insights for Kelley Blue Book. "Gas prices could repeat or surpass these lows once again this year, especially with Europe in recession."

KBB's report indicates sales of fuel efficient vehicles may lag if gas prices drop. However, the cost of fuel is not expected to dip below the $3 mark, so it is unlikely the reduction in sales will be very significant. Subcompact, compact and hybrid cars only accounted for 21.5 percent of auto sales in April, which is the lowest monthly volume for this grouping of vehicles this year.

Whether drivers want to get behind the wheel of fuel-efficient models or would prefer something bigger, those looking for used cars in NJ can head to New Jersey State Auto Auction. The dealer has a variety of makes and models so motorists will be able to find something to suit their needs. Plus, all models are CARFAX certified, so drivers know they're getting a reliable ride from NJ Auto.