As of November 2015, the 1985 Chevrolet Monte Carlo Super Sport has an average retail value of $5,500, according to the National Automobile Dealers Association Guide. The original manufacturer's suggested retail price is $11,657.
Retail values for the 1985 Monte Carlo Super Sport range from $3,600 to $10,250. The value of the car also changes with the options that are equipped. For instance, a Corvette glass roof adds an average of $375 to the retail value, while the Corvette Performance Handling Package adds $600 to the retail value. A diesel or four-cylinder engine decreases the value of the car by 15 percent, while a six-cylinder engine decreases the value of the car by 10 percent.