Part Exchange vs Private Sale vs Car Buying Service: Which Gets You the Best Deal?

In the part exchange vs private sale debate, a private sale usually gets you the most money, while a part exchange or car buying service gets you the quickest, simplest sale. The best way to sell your car depends on what matters more to you: the highest possible price, or your time, safety and certainty.

Part exchange vs private sale vs car buying service at a glance

Part exchange: pros and cons

Part exchange means the dealer takes your car as part payment for the one you're buying.

Pros

• One visit and one transaction, with no advertising.
• The dealer can settle any outstanding finance.
• No strangers at your door and no payment risk.

Cons

• The figure is usually lower than you'd get privately.
• It's tied to the new-car deal, so a generous-looking part-exchange price can be offset by a smaller discount.
• If your next car is on order, the final figure may depend on your car's condition and mileage when you hand it over.

Private sale: pros and cons

Selling privately means finding your own buyer, usually through online adverts.

Pros

• Usually the highest price, because there's no dealer margin to come out of it.
• You control the asking price and the timing.

Cons

• It takes time: photos, adverts, calls, viewings and test drives.
• You handle payment, the paperwork and DVLA yourself.
• There's more risk of fraud, time-wasters and safety problems.
• Buyers will check everything, and the car must match your description.

Car buying service: pros and cons

A car buying service such as webuyanycar buys your car outright, whether or not you're buying another one.

Pros

• A free instant valuation online, which webuyanycar guarantees for four days.
• One appointment, typically under half an hour, with no obligation to sell.
• The buyer handles the paperwork, including telling DVLA, and can settle outstanding finance.
• Payment by bank transfer, with standard payment within four working days.

Cons

• Usually less than a private sale.
• The final offer is confirmed after an inspection and short test drive, and can be lower than the online valuation if the car's condition, mileage or history differs from what you declared.
• webuyanycar charges a transaction fee, shown with your valuation, and there's no collection service.

What about online car-selling platforms?

There's a fourth route: websites where you list your car with photos and details, and dealers bid on it. Some arrange collection from your home. The price is usually confirmed only once the car has been inspected, and it can be cut if the car doesn't match your listing, so describe it accurately and read the terms on fees and price changes before you agree.

When does each option win?

Worked example: which deal is really better?

The headline figures can mislead, so compare what you actually end up with. Imagine an instant offer for your car is worth £6,000 to you after any fees. A dealer offers £6,400 in part exchange, but only if you give up a £500 discount on the new car that you'd otherwise get. That part exchange is really worth £5,900, less than the instant offer.

Now imagine similar cars are advertised privately at around £7,000, and you'd realistically clear £6,700 after haggling and advert costs. The private sale puts £700 more in your pocket than the instant offer. The question is whether £700 is worth a few weeks of calls, viewings and payment checks to you.

These figures are only an illustration. Run the same sums with your own valuation, dealer quote and private adverts.

How to get a better part-exchange deal

Dealers negotiate every day. These steps help you hold your own:

1. Know your car's value first. Get an instant valuation and look at private adverts for similar cars, so you know what a fair figure looks like. Our guide on how much your car is worth explains what drives the price.
2. Negotiate the new car's price first, before you mention the part exchange. Then agree the part-exchange figure separately.
3. Focus on the cost to change: the difference between the new car's price and what you're given for yours. A big part-exchange figure means little if the discount shrinks.
4. Look at the total cost of any finance, not just the monthly payment.
5. Be upfront about faults. The dealer will find them at inspection, and surprises lead to lower offers.
6. Bring everything: the service history, both keys and the V5C logbook.
7. Use a competing offer. If an instant valuation beats the dealer's figure, say so. The dealer may match it, and if not, you can sell your car separately and buy without a part exchange.

How to sell privately and safely

A private sale can earn you more, but only if you protect yourself along the way.

Getting paid: which payment methods are safe?

Never rely on a screenshot, email or text as proof of payment. Log in to your own bank account and check the money is there.

Test drives and insurance

• Check their licence and make sure they're insured to drive your car. Don't assume their own policy covers them, or that yours does: check both.
• Go with them on every test drive, and plan the route in advance.
• Keep the key with you whenever you swap seats or get out of the car.
• Sell from home, in daylight, with someone else around if you can. Citizens Advice tells buyers to view a car at the seller's home, so expect the request.

Other ways to protect yourself

• Show the logbook in person, but never send photos of it or share its 11-digit reference number. GOV.UK warns these could be used to get a fraudulent copy, putting your car at risk of being stolen or cloned.
• Describe the car honestly. Under the Sale of Goods Act 1979, goods must match their description, and that applies in a private sale too.
• Write a receipt and tell DVLA on the day of the sale. Our guide to the documents needed to sell a car includes a receipt template.

Make your decision in under an hour

You don't need days to choose. In one sitting:

1. Get a free car valuation online. It takes a couple of minutes.
2. Check your car's MOT history and mileage record, because buyers will.
3. Ask the dealer for a part-exchange figure in writing if you're buying.
4. Look up private adverts for the same model, age and mileage.
5. Compare the figures, then weigh the gap against your time and the risks of a private sale.

If the extra you'd get privately is small, take the quick, certain option and sell your car to a buyer who handles the paperwork. If it's large and you have time, sell privately and follow the safety steps above. For a quick sale, see our three-day plan for selling your car fast.