Consumers who are perusing listings of used cars in New York may look at the CARS program and wonder if it makes financial sense for them, or helps the environment. Several opponents are hoping they’ll stay away from junking their used cars.

The average price of a new car is $27,800, while used cars run roughly $14,000 dollars, according to Edmunds.com data cited by ABC News.

The program will issue a maximum of $4,500 for trade-ins of used vehicles, bringing the average cost down to $23,000, and the question is whether or not consumers will want to save the $4,500, or the $9,000, according to the news provider.

Opponents of the law aren’t just looking at prices, though, as environmentalists worry that the program won’t have the desired effect of reducing greenhouse gases.

“When introduced, the program had an environmental rationale,” wrote Dan Becker, Safe Climate Campaign director, in a Star-Ledger editorial. “It is now so diluted that in some cases, buying a car or light truck offering an improvement of a mere one mile per gallon over your junked wheels will get you a $3,500 voucher.”