How Vehicle Condition Impacts Your NADA Value and Trade‑In Selling or trading your car starts with a number—but not the final one. The NADA value is a widely used benchmark for consumer vehicle values based on year, make, model, mileage, and market inputs, helping shoppers and dealers set expectations for a trade-in starting point. Dealers typically begin at a guide figure from NADA or similar sources, then adjust for your car’s unique condition, history, and local demand. That’s why offers come …