Trade-in vs private sale, and where your money actually goes

A private sale almost always pays more than a trade-in. It also takes longer: the average used car needed 51.8 days to find a buyer in May 2026, on Australian Automotive Dealer Association figures. Trade-in vs private sale is really a question about what your time is worth.

• How much more does a private sale actually pay?
• How does a dealer work out your trade-in value?
• What does selling privately really cost you?
• Which selling route suits your car?
• What paperwork do you have to get right?
• So should you trade in or sell privately?

How much more does a private sale actually pay?

There is no single figure, because the gap is whatever margin a dealer needs to resell your particular car, and that moves with the model, its age and how many others are already sitting on the market.

What you can measure is the market the dealer is buying into. Listings across Australia reached 339,728 in May 2026 while sales came to 221,323, and the AADA put the resulting pressure on prices down to competition between sellers. Every dollar a dealer hands you is a dollar they have to win back in that market.

The increase in discounting reflects the strong level of competition in the used vehicle market at the moment.

James Voortman, Chief Executive Officer, Australian Automotive Dealer Association

Private sellers also move more of the used market than dealers do. Dealers handled 45.4 per cent of the 221,323 vehicles that changed hands in May 2026, leaving the larger share to private sellers, according to the AADA. Selling it yourself is the normal way Australians sell a car, not the unusual one.

To work out your own gap, collect three written dealer offers, then look at what the same model is listed for privately. Then take something off those listings, because an asking price is not a sale price. Sellers gave up an average of 3.4 per cent off their advertised figure in May 2026, the deepest cut of the year, and for the first time that year more than half the cars sold had been advertised higher before they found a buyer, the AADA reported.

How does a dealer work out your trade-in value?

A dealer starts from what they expect your car to retail for, then subtracts reconditioning, the cost of holding it on the lot, and the risk that they will have to discount it to shift it.

Holding cost is the part sellers underestimate. In May 2026 the average used car took 51.8 days to find a buyer, slower than in any other month that year, on AADA figures. The dealer is funding your car on a floorplan for roughly that long before anyone pays for it, and the price they offer you reflects that.

Then there is the legal weight they pick up. The ACCC says a car bought from a licensed dealer carries consumer guarantees under Australian Consumer Law, while a used car bought privately or at auction mostly does not, and nor do most state and territory protections. A consumer guarantee is a legal promise that the car is of acceptable quality and fit for purpose, enforceable against the seller. The dealer is taking on that promise about your car. You, selling privately, are not.

What lifts a trade-in offer

• A full logbook service history the dealer can show the next buyer.
• A model the dealer already sells and already has buyers asking for.
• Two sets of keys, the owner’s manual and a current roadworthy where your state requires one.
• Tyres and brakes with enough life left that they do not need replacing before resale.

What drags it down

• Cosmetic damage, because paint and panel work comes straight off the offer.
• A model the dealer will have to wholesale on rather than retail themselves.
• Money still owing on the car, which has to be paid out before ownership can pass cleanly.
• A fuel type the dealer expects to discount, which in May 2026 meant petrol and diesel more than hybrids.

What does selling privately really cost you?

Selling privately costs you time first and money second, and the time is what makes people give up and take the trade-in.

Plan on at least the market average of 51.8 days from listing to sale, based on AADA data for May 2026. That average covers dealer and private listings together, and dealer stock is usually detailed, photographed properly and sitting in a visible location, so treat it as a floor rather than a ceiling for your own ad.

Before any of that you have the preparation. A detail, a mechanical once-over and decent photographs are the things that make a private ad competitive, and it’s worth knowing which of those jobs actually return more than they cost rather than spending on all of them.

Then there is the haggling. In May 2026 the typical sale closed 3.4 per cent under the advertised price, and most cars that sold had already been marked down at least once, per the AADA. Your first price is a starting point, not a result.

Private buyers also price in their own risk. Because the protections of a dealer sale don’t travel with a private one, a careful buyer will run a Personal Property Securities Register check before paying, which the ACCC recommends precisely so they can see whether a lender still has a claim on the car. If something goes wrong afterwards, the ACCC doesn’t arbitrate individual purchase disputes and sends people to their state or territory consumer protection agency. Neither of you has a quick remedy, and that uncertainty is part of why a private buyer bargains harder than a dealer’s customer does.

Which selling route suits your car?

The right route depends on how fast you need the money, how much the car is worth, and how much of the work you are willing to do yourself. The table below sets the three routes against the May 2026 market figures published by the AADA and the consumer guarantee position set out by the ACCC.

Route	Time from decision to money	Who advertises and shows the car	Consumer guarantees on the sale	Share of May 2026 used sales
Trade-in with your next car	Settled the day you collect the new car	The dealer	Apply when the dealer resells it	Within the dealer share of 45.4%
Outright sale to a dealer	As fast as you can collect written offers	The dealer	Apply when the dealer resells it	Within the dealer share of 45.4%
Private sale	51.8 days average across used listings	You	Mostly do not	The remaining majority, sold privately

Trade-in with your next car

This is one transaction instead of two. You hand over the keys, the figure comes off the new car’s contract, and you never list, photograph or meet a stranger in a car park. The cost of that is the dealer’s margin, which on a cheaper car can be a large share of what the car is worth and on an in-demand one can be surprisingly small. Ask for the trade-in figure and the new car price separately, in writing, so a generous-looking trade-in is not being funded by a thinner discount on the car you’re buying.

Outright sale to a dealer

Selling to a dealer without buying anything turns the deal into a single number you can shop around. Three or four written offers take an afternoon of phone calls and give you a hard floor for the private price. If nobody bids within reach of what private listings suggest, that gap is the real cost of selling it yourself, and now you can judge whether it’s worth the weeks.

Private sale

Private selling rewards cars people search for by name and punishes cars nobody is looking for. Fuel type matters here too. Discounting ran past 50 per cent of used petrol and diesel sales in May 2026, heavier than any other fuel type, while hybrids stayed under half, the AADA found, which is one reason hybrid resale values hold up the way they do.

What paperwork do you have to get right?

Two documents decide whether a private sale is actually finished, the notice of disposal you lodge and the registration transfer the buyer lodges. Rules differ by state, and the detail below follows Service NSW.

Step 1: Clear any money still owing on the car

Get a payout figure from your lender before you advertise. Where consumer guarantees do apply, the ACCC says the buyer is entitled to clear ownership and to possession nobody else can disturb, and it tells people buying privately to check the PPSR in case a lender still has a claim. A buyer who finds a security interest you didn’t mention will walk.

Step 2: Be straight about what the buyer is and isn’t getting

Say plainly that this is a private sale. On the ACCC‘s reading, a privately bought used car comes with few of the guarantees a dealer sale carries, and most state and territory protections don’t reach it either, so the buyer has far less recourse than they would on a forecourt. Describe the car accurately and keep a copy of the ad, because what you claimed in writing is what you can be held to.

Step 3: Lodge the notice of disposal the day the car leaves

A notice of disposal is the form that tells the road authority you no longer have the car. Service NSW tells sellers to send it in the moment the car is gone, because any parking ticket or driving offence the new owner picks up can still land on you until that notice is lodged. This is the cheapest piece of admin in the whole sale and the one people forget.

Step 4: Check that the registration is transferred

Follow the buyer up a fortnight later. In NSW they have 14 days from the sale date to put the registration in their own name before late fees apply, per Service NSW, and a transfer that never happens leaves your name attached to the car. There is more on what a transfer does and doesn’t release you from once the car is gone.

So should you trade in or sell privately?

Sell privately if the car is worth enough for the gap to be real money and you can live with a month or more of listings and messages. Trade in if you can’t.

A private sale typically pays more than a trade-in on the same car, and a trade-in typically costs you weeks less. That is the whole trade, and it gets easier to judge once you have a written dealer offer in hand, because the gap stops being a guess. Compare it against realistic private money rather than asking prices, remembering that most cars sold in May 2026 went for less than they were advertised at, on AADA numbers.

Best for a trade-in: sellers who want the car gone on the day they collect the next one, and who accept a wholesale price as the fee for that.

Not for a trade-in: sellers with a car buyers actively search for, a free month, and the patience to answer messages, where the private gap is the biggest single saving available in the whole transaction.