Core Insights - The used car market sees approximately 40 million vehicles sold annually, with various resources providing essential pricing data for buyers and sellers [1] Valuation Resources - Kelley Blue Book, National Automotive Dealers Association, and Edmunds are the primary resources for determining used car values, each utilizing different data and algorithms [3][6] Key Factors Affecting Value - Mileage and condition are the most significant factors influencing a used vehicle's price, with additional considerations including options, location, and color [4][11] - Higher mileage typically correlates with increased wear and tear, making lower-mileage vehicles more desirable [4] - Condition is subjective and can vary between seller descriptions and buyer perceptions, impacting overall value [4] Options and Features - Certain options, such as diesel engines and all-wheel drive, tend to retain value better than others, while aftermarket modifications generally decrease a vehicle's worth [5][9] - Common features like air conditioning and power windows are now standard and do not significantly affect pricing [7] - Manual transmissions may increase the value of certain sports cars, contrasting with the general preference for automatic transmissions in other vehicle types [8] Personalization Impact - Personalizing a vehicle can negatively affect its resale value due to changing trends and individual preferences [6][9] - Exterior color has a minor impact on pricing, with more common colors selling faster than less conventional ones [10]