Sales of the 1985 Monte Carlo remained high, with a larger percentage opting for the powerful SS model with its standard 305-ci HO V8 rated at 180 horsepower. Over 10,000 more of the SS’s were sold in 1985; 35,484 of the muscle car-like coupe were sold. The total sport coupe production dipped a little as a result, down to 82,573.

The power of the base engine was upped, with a new 262-ci V6 rated at 130 horsepower as the standard engine. The standard V8 on the sports coupe remained a 305-ci rated at 150 horsepower.

1985 also featured the return of the T-top and the demise of the diesel engine.