Trade-in or private sale: which is actually worth more?

The usual advice is that you always get more selling privately. It is true on the sticker and it is often wrong by the time the money is in your account.

What follows is the honest arithmetic for Ireland, including the parts that never appear in the comparison — the weeks, the strangers, the VAT rule that quietly moves the goalposts, and the fact that a trade-in is not a sale at all but a discount.

They are not the same transaction

A private sale is you selling your car to another person for cash or a transfer. You set the price, you take the calls, you handle the change of ownership, and the money is yours.

A trade-in is you handing your car to a dealer as part payment against another one. No money changes hands for your car on its own; what you get is a number knocked off the car you are buying. That distinction matters more than most people realise, and it is where the tax point below comes from.

A third option sits between them: selling outright to a dealer without buying anything. Fewer dealers advertise for that, but most will do it, and it is what a free valuation actually produces — offers to buy your car, whether or not you take another one off them.

The number on the sticker

Broadly, on the same car on the same day:

The gap between the top and bottom row is real. On a €12,000 car it might be €1,000 to €2,000. Whether that gap is worth having depends entirely on what it costs you to collect it.

What the private sale actually costs

Nobody counts these, and they are the whole argument.

• Time. Advertising, answering, arranging, re-arranging. Six to ten weeks is normal for anything that is not a small, cheap, popular car.
• The car depreciating while you wait. Two months of holding is two months of value, plus tax and insurance you are still paying on a car you are trying to be rid of.
• Strangers at your house. Test drives with people you have never met, in your car, on your insurance. Most are grand. It only takes one.
• Payment risk. Cash you cannot verify, transfers that have not cleared, and a bank draft that is not what it says it is. This is where private sellers actually get hurt in Ireland.
• The haggle at the kerb. The buyer has found the same scrape you decided not to mention, and now the price is moving in one direction.
• Coming back to you afterwards. You sold it privately, so there is no warranty — but there is still a phone call about the clutch three weeks later, and it is unpleasant.

What the trade-in is quietly worth

• It happens today. One conversation, one set of paperwork, one afternoon.
• The finance gets settled properly. If there is money outstanding on the car, a dealer settles it as part of the deal. Privately, an outstanding finance agreement is your problem to unwind before you can sell at all, and a buyer who checks will walk away.
• No comeback. Once it is gone, it is gone. Nobody is ringing you in a month.
• VAT on the margin. Here is the piece that never appears in the comparison: when a dealer buys from a private seller they normally sell that car on under the margin scheme, paying VAT on their profit rather than on the full price. That is exactly why a dealer can afford to give you a decent number for your car and still make the deal work — and it is why "they will always low-ball you" is lazier than it sounds.
• The number is negotiable in two directions. A trade-in figure and a discount on the car you are buying are the same money to the dealer. Ask for the two separately and you will find out which one they have room on.

So which one

A rough rule that holds up:

• Cheap and old (under about €4,000, or over about twelve years): the gap is small, the hassle is not. Trade it in or sell it to a dealer.
• Middle of the market, in good order, and you have the time: private will pay more if you really will do the work. Be honest with yourself about that.
• Anything with finance outstanding: trade-in, nearly always. Unwinding it privately is a job.
• Anything you need gone this month: trade-in. Time pressure and private sales do not mix, and buyers can smell it.
• A car with a story — high mileage, patchy history, a category write-off in its past: a dealer will price the story. A private buyer will discover it and walk.

The move that costs nothing

Get a dealer number before you decide. Not to accept it — to have it.

A free valuation gives you a real figure from a real buyer, which is the floor under everything else. If you then advertise privately, you know exactly what you are refusing and you know when to stop holding out. If you do not, you take the offer and get your weekend back.

Describe the car and add a few photos and offers come back, usually inside 24 to 72 hours. It costs nothing and commits you to nothing.

Before you do, it is worth knowing what a dealer is actually looking at — and that NCT and mileage move the number more than almost anything else you could tidy up.