Most accountant I have worked with tended to give such an asset a 5-7 year economical life span.
meaning a brand new vehicle in 5yrs time the book value would be nought, while the market value could something different.
Now if it is a personal vehicle you have a sentimental value as well to consider.
All in all it could the amount an insurance co would be prepared to compensate if it were to be written off as is where is basis.
Wesgerrard I THOUGHT IS asking for book value of a car.
now what deterimines book value is DEPRECIATION.
If I got your question wrong ,sorry wesgerrard better luck some other day!!!!