....I did auto appraisals for many years...I always asked alot of questions about the car, how many made, matching numbers, documentation and what amount the owner thought the car was worth
....I inspected all items to see if they worked, if it ran well (sometimes not an issue), paint condition, interior condition, overall cleanliness of the car....in short, if a like car is worth $100K fully done, what would it take to make this yours a $100K car....color has an impact as do options....but most of all, it was just my opinion on a given day...I usually only did MOPARS and muscle cars in general because that was where my strengths were....I also did Vettes and various hot rods....rarely did I appraise an antique car because I didn't know enough about most of them to feel comfortable