Search this question and you'll get a percentage — ten below asking, fifteen, twenty. None of it means anything, because the asking price is the one number in the deal the seller chose alone. The same haircut applied to a car priced high and a car priced honestly overpays for the first and insults the owner of the second. The percentage isn't a strategy. It's a way to skip the work.
The work is short. A defensible offer is built from three inputs: what comparable cars are actually selling for near you, what this specific car needs that the comps don't, and how much the seller needs to sell. Those produce three numbers — an opening, a target, and a walk-away — and one sentence you can say out loud without flinching.
Anchor on comps, not on the asking price
The market value of a used car is what the same car is selling for around you, and the seller's ask is at best one data point in that set. Pull up the model on two or three marketplaces — Facebook Marketplace, Craigslist, Autotrader, CarGurus — and filter tightly:
- Same model year, or one either side if the generation didn't change
- Same trim and drivetrain — a loaded all-wheel-drive car and a base front-driver are priced differently
- A mileage band around this car's, not the whole range
- Your region — prices move with local demand and rust
- Private sellers separately from dealers, whose asks carry reconditioning and margin
- Listing age where the site shows it: weeks at one price says the price is too high, and a sold listing outweighs five live ones
Subtract what you can prove, not what you can imagine
You'll end up with a cluster and a couple of outliers; the cluster is your anchor. If the ask sits inside it, your leverage will have to come from the car. If it sits above, the comps are your first talking point. For a second read on the ask, paste the listing into a free browser check — but build the comps yourself, because the point is to be able to name them.
The second input is the gap between this car and those comps. The comps are average examples for the mileage, so ordinary wear is already priced in. What you can take off is the specific, nameable work this car needs that a typical comp doesn't. Walk the car with an inspection checklist, drive it, and write down what you find. Then price each item with a real quote — a tire shop for the size, an independent mechanic for the brakes or the service that's due. A seller can argue with a number you made up. A quote from a shop down the road is much harder to dismiss.
- Tires at or near the wear bars, or old by the sidewall date code — a full set, quoted for that size
- Brakes: a pulsing pedal, grinding, or pads visibly thin through the wheel spokes
- A scheduled service due by the mileage — timing belt, transmission fluid, spark plugs
- A check-engine light, priced as a diagnostic plus the repair the code points to
- Body damage — a dent, a cracked bumper, a windshield chip — with a body-shop or glass quote
- Missing things that cost money: the second key, the wheel-lock key, the spare and jack
Read the seller's position
Two cautions. Don't double-count — a seller who disclosed the tires and priced below the comps for them has already given that discount. And don't pad with cosmetics you don't care about; a list of trivia marks you as a lowballer and gets the real items ignored.
The third input isn't about the car. It's how much room the seller has, and most of it is visible in the listing. Days listed is the biggest free tell: posted yesterday means a seller who still believes the ask; relisted twice or two price drops means one who has learned the market and is tired of showings. The reason for selling works the same way — a move date, a new car in the driveway, a lease ending are deadlines, and deadlines are leverage.
Look at the seller's other listings. One car and a story that matches the ad is a private owner. Four cars, all recently acquired, all "selling for a friend," is a dealer posing as a private seller — thinner margin and title problems this article doesn't cover. Finally, ask whether the title is in hand, in their name, and free of a loan. A lien means a payoff at the bank and a seller who can't go below the balance owed.
Three numbers, decided before you arrive
Now combine. Your target is the comps cluster minus the documented repairs, nudged by the seller's position — a little lower for a stale listing with a deadline, right at the cluster for a fresh one. Your opening sits a step below the target: low enough to leave the seller a win, high enough to defend out loud. Your walk-away is the price above which the next-best comp becomes the better buy, and it's the only one of the three that's non-negotiable. Decide it at home.
With invented, deliberately small numbers: comps clustering around $9,000, a tire-and-brake quote of $700, a listing up for six weeks. Target near $8,300, open a few hundred under that, and walk if it can't close under $8,700 — because at that price the cleaner comp across town is the better car. Your figures will differ; the structure is the point.
One rule ties it together: every step toward the seller costs you a reason. If you move up, name what you're conceding — "fine, I'll split the brake job with you." Moving without a reason tells the seller the first number was theater.
How to say it — and when to skip the discount
One sentence per input, then the number, then silence: "I've looked at the other ones within an hour of here, and clean ones with this mileage are going for around X. This one needs tires and front brakes — I've got a quote for that. I can do Y today." No adjectives about the car, nothing about the seller's judgment, no "to be honest." Describe the market and the car, and let the seller argue with those instead of with you. The rest of the conversation — first message, screening questions, the "other buyers" line — is in the scripts guide; this article's job is the number.
Sometimes the honest answer to "how much below asking" is nothing. A well-kept car priced inside the cluster, listed this week, with records and a phone full of messages sells this weekend at about the ask, and an opening far below it gets you removed from the list. When the inputs say the price is fair, pay it quickly, or ask for one specific thing: "would you take X if I bring a cashier's check tomorrow and save you the weekend of showings?" Winning the negotiation on a fairly priced clean car usually means losing the car to the buyer behind you.
Closing mechanics
Agreeing on a number is halfway. How the money and the title change hands decides whether you've bought a car or a problem.
- Meet at a bank — the seller's, if there's a lien — so the teller can verify a cashier's check in front of both of you and handle the payoff
- Cash counted in a bank lobby or a police-station exchange zone is fine; for a larger sum a cashier's check gives both sides a record. Never a wire, gift cards, or a payment app
- Watch the seller sign the title in front of you — a title pre-signed by someone absent can't be verified, and one with the buyer line blank is how curbstoners pass cars along unregistered
- Match the seller's ID to the name on the title, the VIN on the title to the dash and door jamb, and the odometer reading they write to the dash
- Bill of sale in duplicate: year, make, model, VIN, price, date, "sold as-is," both signatures — most state DMV sites offer a free form
- Sort out insurance and your state's temporary-tag rules before you drive home; in most states the seller keeps the plates
There is no percentage. There's a cluster of comps, a short list of what this car needs with quotes attached, and a seller whose position you can read from the listing itself. Build the three numbers from those, say the opening in one calm sentence, move only with a reason, and leave at the walk-away. You'll pay a fair price for a fairly priced car and a discounted price for one that earns it — the only version of "below asking" that was ever real.