Hi Barry,

We’re not sure what you’re asking us here – if you’re saying you want to buy a new car and you have a 2008 Opel Vectra as a trade-in, then how much you can discount (as a percentage) off the new car will vary greatly according to how in-demand the new car is, how much a dealer offers you for your Vectra and how expensive the new car in question is. If you’re asking how much cash discount you can get on buying a 2008 Vectra, the answer would be not much, as they’re not worth a huge amount of money in the first place.