Part exchanging a car that still has finance on it is two transactions presented as one. The dealer values your car, settles the outstanding agreement with your funder, and whatever is left over or short becomes part of the next deal. Nothing about that is unusual, and all of the risk sits in one place: the two numbers are usually quoted to you as a single monthly figure, where neither can be checked.
Part exchange car with finance: ask for the two numbers separately
Ask for the valuation of your car and the settlement figure as separate written numbers, and get the settlement figure from the funder yourself as well. A dealer can present a generous-looking valuation against a quietly worse discount on the new car, and the only way to see it is to look at the four figures on their own: your car's value, your settlement, the new car's price, and the amount being financed.
How does part exchange work on a finance car when there is equity
If your car is worth more than the settlement figure, the difference is equity and it normally becomes the deposit on the next agreement. That is the clean case, and it is the main reason people part exchange rather than sell. Ask for the equity to be shown as a deposit line on the new agreement so it is visible in the paperwork rather than absorbed into the price.
And when there is a shortfall, it goes into the next car
If the settlement figure is larger than the valuation, the shortfall has to be paid or added to the amount financed on the next car. Added is what usually happens, which means borrowing the gap over another term with interest, secured on a car that will itself depreciate. That is how a modest shortfall becomes a larger one two agreements later.
Pcp part exchange and the final payment
On a personal contract purchase the settlement figure part-way through the term includes the deferred final payment, so it is often higher than people expect. At the end of the term the comparison is simpler: the car's value against the optional final payment, with any excess as equity. Part exchanging early on a PCP is the case most likely to produce a shortfall.
Questions people ask about part exchange car on finance
Can i part exchange a car on finance at any point in the term?
Yes, subject to the settlement figure. Early in a term is when a shortfall is most likely, because capital repayment is slow at the start and depreciation is fastest.
Can you part exchange a car on pcp before the end?
Yes, and the settlement figure will include the deferred final payment. Compare it against a realistic valuation before agreeing anything, because this is the combination that most often produces negative equity.
Is part exchange better than selling privately?
It is simpler and usually worth less. A private sale normally beats a trade valuation, but you have to handle the settlement yourself and find a buyer willing to buy a financed car.
Does the dealer have to settle my finance?
Only if that is what you have agreed in writing. Get the settlement handled as an explicit term of the deal and keep the funder's confirmation that the balance was cleared.