What buyers actually notice first
Not the service history. Not the tyres. It's the smell when the door opens, whether the seats look worn or just tired, and whether the paint has any depth to it under the light. Those first thirty seconds shape everything that follows — a buyer who's already impressed negotiates differently to one who's mentally listing flaws.
Where the money actually is
Interior condition moves price more than most sellers expect, because it's the thing buyers physically sit in for the test drive. Stains, pet hair and lingering odours read as "this car wasn't looked after," even in a mechanically perfect vehicle — and that perception is hard to talk someone out of once it's formed. Paint correction matters too, but it's the interior that tends to close or lose a sale in the first five minutes.
The maths
A Signature Full Detail runs a few hundred dollars depending on vehicle size. Private sale price differences between a detailed and an undetailed version of the same car are routinely several times that — not because the car is mechanically different, but because presentation changes what a buyer is willing to offer without negotiating hard. It's one of the few pieces of sale prep where the return is that directly visible.
What to prioritise if you're on a deadline
If the sale's coming up fast, interior detailing and paint decontamination do more work per dollar than a full correction and ceramic coating — a buyer test-driving the car next week isn't going to benefit from twelve months of paint protection, but they will notice a spotless interior and paint that catches the light properly. Save the longer-term protection packages for a car you're keeping.
Timing it right
Book the detail as close to your first listing photos and the first test drives as practical — ideally within a week of listing, so the car still looks the way it did in the photos when someone actually turns up to see it. A detail done a month before sale, with the car sitting outside the whole time, has usually lost a good portion of its impact by the time it matters.