Should I sell my car privately, to a dealer, or to an online buyer?
What each route actually costs you in money and in hassle, how to compare them honestly, and the specific situations where the obvious answer is the wrong one.
- Difficulty
- beginner
- Time
- 18 min
- Read
- 5 min
- Safety
- caution
Short answer
Selling privately gets the most money and takes the most work and risk. Part-exchanging is the least work and usually the least money, though it can be worth more than it looks if the dealer's discount is generous. An online buying service sits between them: less than private, more than a poor part-exchange, and the transaction takes an afternoon. Get a figure from all three before deciding, because the spread on the same car is often thousands.
This is a genuine trade-off and the right answer differs by car and by person. The variable people underestimate is not money, it is time and exposure. A private sale means photographing and describing the car honestly, fielding messages including a large volume of time-wasting ones, having strangers come to your home, going out on test drives with people you do not know, and handling several thousand pounds. For a desirable, well-documented car that will sell in a week, that is well-paid work. For a high-mileage twelve-year-old hatchback that will sit for two months, it is not.
Safety
Step by step
- Get all three numbers before deciding anything.A realistic private asking price from live comparable adverts, an instant offer from one or two online buying services, and a part-exchange figure from a dealer. All three are free and quick, and the spread tells you what the decision is actually worth.
- Separate the part-exchange from the new car price.Ask the dealer for their best price on the car you are buying with no part exchange at all, and then ask what they will give you. A generous-looking allowance that comes with no discount is not generous. Two separate numbers is the only way to see the real deal.
- Cost the private route honestly.Cleaning and preparation, a fresh MOT if it is close, advertising fees, the hours of messaging and viewings, and the risk. If the gain over the online offer is a few hundred pounds on a cheap car, it is often not worth it; if it is two thousand on a desirable one, it clearly is.
- Match the route to the car.Popular, tidy, well-documented cars in the mid-range sell privately quickly and reward it. Very old, very high-mileage, damaged, or niche cars often struggle privately and are better going to a buying service or a specialist. Prestige cars with full history frequently do best with a specialist dealer on commission.
- Read what an online buying service actually commits to.The instant online figure is subject to inspection, and deductions at collection are common — for tyres, kerbed wheels, warning lights, missing keys and service history gaps. Assume the final figure will be lower than the quote unless the car is genuinely excellent, and ask what their deduction policy is before booking.
- Understand what you are giving up on protection.A private sale is sold as seen in the sense that the buyer has fewer rights than against a dealer, but you must not misdescribe the car — a private seller must not lie about it, and doing so leaves you exposed. Being accurate about faults in the advert protects you and filters out the wrong buyers.
- Handle the money safely on any route.Bank transfer with confirmed cleared funds before the car moves, in person, ideally at a bank. No cheques, no drafts, no part payment, and no releasing the car against a screenshot. This applies to trade buyers as much as private ones.
- Do the paperwork the same day.Notify DVLA online at handover, keep the acknowledgement, and hand over the green new keeper slip. The catalogue's guide on a car still in your name explains what happens when this step slips.
- Wipe your data first.Paired phones, satnav home address, garage door codes and the manufacturer's connected car app. This applies whoever the buyer is, including a dealer, because the car will be sold on again.
Common mistakes
- Deciding before getting all three numbers — The spread between routes on the same car is frequently thousands, and every quote is free. Half an hour of gathering figures is among the best-paid time in car ownership.
- Letting the car go before the money has cleared — Faster payments can be reversed and screenshots can be faked. Cleared funds visible in your own account, confirmed by your bank, is the only safe test.
If it doesn't work
Online buying service cuts the price at collection
Cause: Inspection deductions — Fix: You are free to decline and walk away. Knowing their deduction list in advance, and being honest in the online form about condition, reduces the gap considerably.
Private sale attracting only lowball offers and scams
Cause: Price too high, or an advert that signals an easy target — Fix: A detailed, honest, well-photographed advert with a firm price attracts serious buyers and repels chancers. Ignore anyone who offers to buy unseen and send a courier.
Dealer will not budge on part exchange
Cause: They do not want that car in stock — Fix: Then sell it separately and buy the new car as a cash purchase. Splitting the transaction is almost always available and often better.
Car is worth less than the finance on it
Cause: Negative equity — Fix: None of these routes works until the finance is settled. The catalogue's guide on selling a financed car covers the settlement figure and the options.
Buyer wants to pay in cash
Cause: Common in private sales — Fix: Meet at your bank and pay it in with them present, so the notes are checked and counted by the bank. Do not count several thousand pounds in cash on your driveway.
Sold privately and the buyer complains a month later
Cause: A fault has developed — Fix: A private seller's obligation is that the car matched its description and was as represented. Keep the advert, the messages and the receipt describing the car's condition — that is your evidence.
Questions people ask
Is part exchange ever the best financial option?
Sometimes, yes. There can be a VAT advantage for the dealer on some transactions, some manufacturers run part-exchange contribution offers, and the convenience has real value. What matters is seeing the discount and the allowance as two separate numbers so you can judge.
Are online car buying services worth using?
As a benchmark, always — the quote is free and it establishes the floor of your range. As a sale, they suit people who value speed and certainty over the last few hundred pounds, and they are genuinely useful for cars that are hard to sell privately.
What are my obligations selling privately?
You must not misdescribe the vehicle. You need not volunteer every fault, but you must not lie if asked, and you must not conceal something material such as outstanding finance or a write-off history. Being straightforwardly honest in the advert is both the right thing and the best protection.