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Can a car dealer change the part exchange value of my car after the contract has been signed?

Given the long delays for new cars, what is the situation with part-exchange and trade-in values? If I buy a car now and agree on a value with the dealer on my car for the part exchange, can the dealer change this in six months' time and argue the value of my car has changed?

Asked on 12 July 2022 by frances fineberg

Answered by Dan Powell
The answer to this question will depend on what agreement you strike with the dealer and the nature of the contract you sign.

Usually, buried away in the terms and conditions of the sale, the dealer will reserve the right to change the price of the part-ex if they feel the value has changed due to market conditions or the condition of the vehicle has significantly changed.

The dealer will most likely give you a provisional part-exchange value now, which will be adjusted to reflect its condition and market value as/when your new car arrives. If you are unhappy with this arrangement then raise it with the dealer now and ask them to confirm the trade-in value in writing, with no scope for backtracking at a later date.
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