Owners of classic cars have been advised to work out their vehicle's true value before destroying it under the scrappage scheme.
Organisers of the Classic Motor Show at Birmingham's NEC said 60s, 70s, 80s or even 90s cars may be worth more than receiving a discount on a new model.
A spokesman said: "While the scrappage scheme might be an effective way of stimulating new car sales it's likely that some cars finding their way into the scheme might actually be worth more than the scrappage value offered - and not just in monetary value."
The spokesman urged people to browse classic car-related websites before trading vehicles in for the "cash for bangers" scheme.
"There are lots of websites and magazines where you can advertise classics for sale and often they don't charge a penny to do so."
The Government's scrappage scheme has been criticised by some classic car fans and collectors who say the impact of manufacturing new cars cancels out or outweighs the environmental benefits of driving a newer, more economical model over a vehicle's lifetime.
© Press Association 2009