Guide
How to prepare a car for sale
One rule decides almost every question in here: a buyer pays for a repair they chose and discounts one they did not. That is why an afternoon of cleaning is worth more than a thousand dollars of mechanical work.
Saturday morning
Empty it, clean the inside, find the smell
Saturday afternoon
Wash it, wheels included, and let it dry
Sunday morning
Bulbs, tires, washer fluid, key battery
Sunday, good light
Photographs, including the bad part
Sunday evening
Title, receipts, both keys, the payoff figure
The rule
What preparation is actually buying you.
Buyers rarely expect perfection from a used car. What they will pay for is not having to guess.
Think about what is actually happening when somebody looks at a private car. They cannot see inside the engine, they have your word about the history, and the whole transaction rests on how much of what you say they believe. Everything in their head is a risk estimate, and the price they offer is that estimate turned into money.
That explains why a clean car is worth more than a dirty one with the same mechanicals. Clean does not fix anything, but it is evidence about the owner, and the owner is the only history the buyer can actually inspect. It also explains why a receipt is worth more than a sentence, and why a fault you name yourself costs less than the same fault they discover.
So the work worth doing before a listing goes up is the work that removes uncertainty. The work that is usually not worth doing is the work that replaces parts.
Worth doing
What to do in one afternoon, for under a hundred dollars.
Every item here either removes a reason to negotiate or adds evidence that the car was cared for.
Empty it completely
Everything, including the trunk, the glovebox, the door pockets and whatever is under the seats. A car with somebody else’s life still in it reads as a car that was not looked after, and it makes the photographs unusable.
Clean the inside before the outside
Vacuum, wipe the dash and the door shuts, clean the glass inside as well as out. The interior is where a buyer decides how the car was treated, and it is where most sellers spend the least time.
Deal with the smell
Smoke, dogs, damp, a spill under a mat. Smell is the one thing a photograph cannot hide and a buyer cannot ignore, and it is the single most common reason somebody drives away without making an offer. Find the source rather than covering it.
Wash it, wheels included
Wheels are the first thing a car person looks at and the last thing most people clean. Let it dry before photographs: wet paint hides its own condition, and buyers know that.
Fix the small things
A burnt out bulb, low tires, a dead battery in the remote, an empty washer bottle, a wiper that smears. Each costs very little and each is an item on a buyer’s mental list of things to be taken off the price.
Find the paperwork and the second key
Service receipts, the manual, both keys. A missing second key is a real deduction on most modern cars, and the buyers who know that are the ones who bring it up. Gather it now, not on the morning somebody arrives.
Usually not worth doing
The repairs that tend not to pay for themselves.
Not because the work is bad, but because you pay retail for it and a buyer credits it back at wholesale, if at all.
Big mechanical work
A clutch, a transmission service, a set of four tires, a timing belt. A buyer who wanted those pays something for them, but not what the shop charged you, and a buyer who did not care pays nothing at all. Meanwhile you carry the whole cost and the risk that the car still does not sell.
The better move on anything large is to get it diagnosed, name it in the listing, and price the car with it disclosed. That way the discount is a number you chose rather than one a stranger invents in a parking lot.
Cosmetic repairs, mostly
Paintwork on a panel, a dent removal, a replacement bumper. On an older car these rarely come back, and a single freshly painted panel on an otherwise weathered car raises a question rather than answering one: buyers assume something happened there.
The exceptions are small and cheap. A headlight restoration kit on cloudy lenses and a polish on a dull but sound finish both cost very little and change how the whole car reads in photographs, which is covered in how to photograph a car with a phone.
The exception
The exception: anything that stops the car being driven.
The advice about not fixing things has one limit. A car a buyer cannot drive loses most of the people who would have considered it.
A car that cannot be test driven safely, cannot pass whatever inspection your state requires, or cannot be insured and registered by the person buying it, is not being sold at a discount. It is being sold to a much smaller group of people: those who buy cars they cannot drive, and they buy them at prices that reflect exactly that.
The gap between what an ordinary buyer pays and what that group pays is usually far larger than the repair. So the calculation flips: fix the thing that lets a normal person drive the car away, and leave everything else priced in.
The same applies to a warning light nobody has looked at. An unknown fault is priced by a careful buyer as the most expensive thing it could be, and a diagnosis costs a fraction of that difference. Find out what it is even if you do not intend to fix it.
Before it goes live
The last hour, and it is paperwork.
Everything above is about the car. This is about being ready for the person who says yes.
Find the title, and read it
In your name, in your hands, and look at the back before a pen goes near it. If it is lost, a duplicate takes time you will not have once somebody is waiting, and if the name is wrong that is slower still.
Check what your state requires
Inspection, emissions, a specific bill of sale form, a notice of transfer, whether plates stay or go. None of this is national and none of it should be guessed at. Your own motor vehicle agency is the only reliable source.
Sort out a loan, if there is one
The payoff amount and the lender’s process, in writing, before you list. The detail is in selling a car you still owe money on.
Take the personal things out
Garage remote, toll transponder, saved home address in the navigation, paired phones, anything with an account on it. Easy to forget, and awkward to retrieve afterwards.
Read next
What the prepared car goes into.
The car is ready. These cover what it sells for and how quickly.
The whole process, in order: how to sell a car privately.
How to negotiate when you sell a car privately
How to hold a price without being difficult: what to decide before anybody calls, how to answer the opening lowball, and the point where walking away is the right move.
Private sale, trade-in or instant offer
The three ways out of a car, what each one really pays, the tax rule that can close the gap, and how to work out which is worth it for the car you have.
How to sell a leased car
You cannot sell a car you do not own, so a lease sale is really a buyout followed by a sale. How the numbers work, and why your lender may not allow it.
Frequently asked questions
Should I fix my car before selling it privately?
Fix the cheap things and disclose the expensive ones. A burnt out bulb, low tires, a dead key battery and an empty washer bottle cost very little and each one is a reason a buyer would otherwise ask for money off. A large repair rarely returns what it costs, because a buyer will not pay you what the shop charged you.
Is it worth getting a car professionally detailed before selling?
It is one of the few things that reliably returns more than it costs, and a careful afternoon of your own work gets most of the way there. Interior first: that is where a buyer decides how the car was treated. Smell matters more than shine, because a photograph cannot hide it and a buyer cannot ignore it.
Should I fix a check engine light before selling?
At least find out what it is, because a buyer will, and an unknown warning light is priced as the worst thing it could be. If the fault is cheap, fix it. If it is expensive, get it diagnosed, say what it is in the listing, and price the car accordingly. The cost of the diagnosis is small and it turns a mystery into a known quantity.
Do service records increase what a car sells for?
They increase what a buyer believes, which comes to the same thing. A stack of receipts is the cheapest evidence there is that the car was looked after, and it is the difference between a claim in your listing and a fact the buyer can hold.
Should I sell a car with an expired inspection or registration?
Find out what your state requires before you list it, because in some states an inspection is part of transferring a car and in others it is entirely the buyer's problem. This is one of the questions where a wrong assumption is discovered on the day, so it is worth a call to your own motor vehicle agency.
A page that shows the work you did.
The service history, what you replaced and what is still wrong, in your own words, with the photographs beside them. 10 days free.