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Most people hold onto their cars for too long. Not because they love driving them, but because selling feels like a hassle they will deal with later. The problem is that “later” almost always means less money in your pocket.
Cars are depreciating assets. Every month you wait, the value drops a little more. While there is no single perfect moment to sell, there are clear warning signs that the window is closing. If any of these sound familiar, it might be time to act.
1. Your warranty is about to expire
A manufacturer’s warranty is one of the strongest selling points a used car can have. Buyers are willing to pay more for the peace of mind that comes with coverage.
Once the warranty runs out, the car instantly becomes less attractive. Buyers start factoring in the cost of unexpected repairs, and that directly impacts what they are prepared to offer. If your vehicle is approaching the end of its warranty period, selling before it expires can make a meaningful difference to the price you get.
2. Repair costs are stacking up
Every car needs maintenance, but there is a tipping point where you stop maintaining a car and start pouring money into it. If you have had multiple unexpected repair bills in the past year, add them up and compare the total to the car’s current market value. If repairs are eating up a significant chunk of what the car is worth, you are losing money by holding on.
The trap most people fall into is the sunk cost fallacy — thinking they have already spent so much that they might as well keep going. The money you have spent is gone regardless. The real question is whether it makes sense to keep spending more. Selling before a major repair is needed puts you in a much stronger position.
3. A new model has just been announced
When a manufacturer releases a new generation or significant facelift of your model, the value of the outgoing version drops. It does not happen overnight, but the decline is predictable.
The smart move is to sell before the new model starts appearing on dealership floors in large numbers. Once the used market is flooded with trade-ins from people upgrading, your car has more competition and less leverage on price. Keep an eye on manufacturer announcements for your make and model, and act before the shift happens.
4. Your kilometres are climbing fast
Odometer reading is one of the first things any buyer checks. There are psychological thresholds that matter — under 50,000 km is considered low mileage, 50,000 to 100,000 km is the comfortable sweet spot, and anything over 150,000 km becomes significantly harder to sell at a strong price.
If you are approaching one of these milestones, selling before you cross it can protect a surprising amount of value. The difference between a car listed at 98,000 km and one at 105,000 km is bigger than those 7,000 km suggest, because buyers filter their searches by round numbers.
5. Your fuel bills are getting harder to ignore
With the cost of living under pressure, more buyers are actively looking for fuel-efficient vehicles. The rise of hybrids and electric cars has reset expectations around running costs. In Australia, hybrid sales grew by more than 15 per cent in 2025, and plug-in hybrid sales more than doubled.
If your car is an older petrol model with poor fuel economy, its appeal on the used market is gradually declining. Selling now while it still has reasonable value might be smarter than waiting another year or two when buyer sentiment has shifted even further toward efficiency.
What to do once you spot the signs
Start by getting a realistic picture of your car’s current value. Search for comparable listings on platforms like Carsales or Facebook Marketplace, and use free valuation tools from RedBook or CarsGuide as a baseline. Remember that asking prices are not selling prices — most cars sell for five to fifteen per cent below the listed figure.
If you want a quick, no-obligation figure to work with, dedicated car buying services make it easy to sell your car without the hassle of private listings. You can typically get a realistic offer based on current market data within 24 hours, which takes the guesswork out of the equation even if you ultimately decide to sell another way.
The best time to sell is when the car still has strong appeal and you are not forced into it by a breakdown or a failed inspection. Pay attention to the signs, do your research and make the move before the value curve works against you.
Author: Mitchell is the founder of Sell Any Car Fast, a car buying service based in Queensland, Australia. He helps everyday Australians get fair value for their vehicles without the stress of selling privately.