No, because there are other factors than whether they are a ‘lemon’ or a ‘peach’. For example, age, mileage, brand value, warranty offered, convenience of purchase, etc. These don’t tell you whether the car is a lemon or a peach, although some can help you to guess it.

If you held all these other factors constant, then yes, all used cars would have the same price.

That’s what the Kelly Blue Book thinks