A fair price to offer a dealer for a car.

In my estimatimation, the half life of a car's value is 3 years or less. That makes an optimistic value of this car (0.5)^(8/3) = 15.7% of new price.

Seems a lot for a 7/8 year old car! That said, small cars seem to hold their values longer due to the young driver/first car demand. I'd shop around.

Tim

Is it of much practical use to take an average over all cars when the variation between makes/models is empirically quite large? And that's before all the other factors which come into play.

Then he probably shouldn't buy that car at that price.

It depends on where the asking price sits in relation to a fair price.

The Toyota Aygo is nothing special, the Citroen and the Peugeot is virtually the same car, probably made in the same factory.

I have a car which runs perfectly and is 20 years old. But what is the market value when it come to trying to find a buyer willing to pay? That's a very different question.

If I buy another secondhand car, I would prefer to have money left over for the inevitable contingencies. There is always a reason why people are selling their cars...

Definitely made in the same Czech factory.