The rate of depreciation should reduce as the car gets older....it loses most of its money in the first year, then a little less the second, third fourth,..and so on.
Not totally rubbishing the figure from parkers but its not a reliable source. Glasses guide is generally whats used to work out values and ive found that the figure from the official Glasses Guide book can vary a great deal from what parker use.
Some car manufacturer web sites let you put your car spec in as though you were going to px it with them and it will give you a gg valuation, not sure if it only gives you the trade price though.
Im not sure if vauxhall might be one of them.....??
The other easy way to decide where to price your car for sale is to just look at autotrader/e-bay and see how other simlar models have been priced, you can therefore decided to price your car at the higher end or lower end of the prices depending on whether you want a quick sale or are prepared to wait for the top price possible.
I work as a motor finance underwriter so spend all day looking at and valuing cars for finance. Boring as hell but its got its uses........
Anyway...thought it might help......
