* Condition: This is the biggest factor. A pristine, low-mileage, original condition car will be worth significantly more than one that's rusty, damaged, or heavily modified. Rust is a particularly big issue for cars of this era.
* Mileage: Lower mileage generally means higher value.
* Options: Rare or desirable options (like a specific engine, interior, or exterior color) will increase value.
* Modifications: Aftermarket modifications can either increase or decrease value depending on their quality and desirability to potential buyers. Generally, original, unmodified cars are more valuable.
* Trim level: Different trim levels (e.g., Brougham) had varying features and thus different values.
* Location: Demand can vary geographically.
Because of these variables, there's no single answer to your question. To get an accurate estimate, you should:
* Check online resources: Websites like Hagerty, ClassicCars.com, and NADAguides offer valuations based on condition and other factors. You'll need to input specifics about your Cutlass Supreme.
* Consult with classic car appraisers: For a truly accurate assessment, especially if you're considering selling, consult with a professional classic car appraiser. They can inspect the vehicle and provide a detailed valuation.
Expect the value to range from a few thousand dollars for a very rough, non-running example to potentially tens of thousands for a highly desirable, concours-condition car.