We buy cars: setting up a stock-buying service as a dealer
We buy cars service for dealers: buying stock from the public with data-backed offers, checks, paperwork, safe payment and marketing to sellers.
· 7 min read
A "we buy cars" service lets a dealer buy stock directly from private sellers instead of at auction: the seller asks for an offer, the dealer values the car from market data, inspects it, makes a firm offer and pays on handover. It brings cars without auction fees or bidding wars – provided the offer is calculated back from the retail price and ownership and finance are checked before paying.
We buy cars: how a dealer buys directly from the public
A dealer buys cars from the public with a simple, repeatable process that sellers understand and trust. The core steps:
- Enquiry. The seller enters registration or VIN, mileage, condition and photos on your website, or calls in.
- Indicative offer. You value the car from current market data and give a price range, subject to inspection.
- Inspection. At your site or the seller's home: condition, service history, test drive, fault codes, documents.
- Firm offer. A written offer valid for a few days, with any deductions explained.
- Contract and checks. Identity, ownership, finance, VIN and documents verified; purchase contract signed.
- Payment and handover. Bank transfer on handover; you take the car, keys and documents.
Speed and certainty are what sellers value most. If your indicative offer and your firm offer are usually close, word gets around – and so does the opposite.
How do I make a fair offer that still leaves margin?
Calculate the offer backwards from the price you can sell the car for, not forwards from what the seller hopes to get.
Offer = expected retail price − reconditioning − direct costs − target gross margin
Then check that the net margin after VAT covers your overheads.
Example for a German dealer: according to listings tracked by MyCarDealer in Germany in October 2026, the median asking price of a 2017–2019 Škoda Octavia was €14,000 (594 listings, median mileage about 129,000 km).
| Item | Amount |
|---|---|
| Expected retail price | €14,000 |
| Reconditioning (service, tyres, smart repair) | −€700 |
| Direct costs (valet, photos, warranty, admin) | −€300 |
| Target gross margin | −€1,800 |
| Offer to the seller | €11,200 |
| VAT on the margin (19/119 × €1,800) | €287.39 |
| Net margin after VAT | €1,512.61 |
Bought from a private seller, the car goes into the margin scheme, so only the margin is taxed; see the VAT margin scheme for used cars. Adjust the retail price for the specific car – mileage, engine, equipment and condition can move it well away from the median – and use comparable cars only. You can check any car's market price and net margin with a free valuation.
Explain the offer to the seller. Showing them a few comparable listings and the work the car needs builds trust, and sellers accept a lower figure when they understand where it comes from. Our guide to used car valuation for dealers covers the comparison method.
For car dealers
Know your margin before you buy
MyCarDealer compares any car from an auction or listing with the market in your country and shows the net margin after VAT, transport and costs – and the maximum bid.
Request accessWho will pay the most for a used car?
A private buyer usually pays the most, because a private sale skips the dealer's costs, guarantee risk and margin. A dealer pays less, but offers speed, certainty, no strangers at the door, no risk of payment fraud and no liability after the sale.
That is the honest pitch for a "we buy cars" service: you will not beat a patient private sale on price, but you are fast, safe and simple. Many sellers – people moving abroad, changing to a company car, settling an estate or just short of time – value that more than the last few hundred euros.
Which checks are needed before buying from a private seller?
Check identity, ownership, finance and the car itself before you pay. The main checks:
- Identity: valid ID document; the name must match the registration documents.
- Ownership: registration documents in the seller's name; in Germany, the Zulassungsbescheinigung Teil II is essential.
- Finance: whether the car is financed or leased. A financed car can usually be bought, but only by paying the lender directly; see the car finance check.
- VIN: matches the documents and is undamaged on the car.
- Mileage: consistent with service records and inspection reports.
- Theft and damage: history and stolen-vehicle checks available in your country.
- Keys and documents: all keys, service book, CoC if available, inspection report.
If anything does not fit – a seller who is not the registered keeper, a missing ownership document, pressure to pay quickly in cash – walk away.
Paperwork and payment
Use a written purchase contract for every car. It should include the seller's details, the car's details and VIN, mileage, the price, known defects, the handover of documents and keys, and declarations that the seller owns the car, that it is free of finance or third-party rights and that the seller is a private individual. This also supports your margin-scheme records.
Pay by bank transfer to an account in the seller's name, at handover. Instant transfers, now standard in the euro area, mean the seller sees the money before you drive away. Avoid large cash payments: several countries already restrict cash in business transactions, and from 10 July 2027 the EU Anti-Money Laundering Regulation (EU) 2024/1624 limits cash payments to traders to €10,000.
If the car has outstanding finance, get a written settlement figure from the lender, pay the lender directly, and pay the seller only the remainder.
How do I attract private sellers to my dealership?
Private sellers find buyers through search, local visibility and trust. The channels that work for most dealers:
- A clear "sell your car" page on your website with an online form, a description of the process and honest information about how offers are calculated.
- Local search. A complete business profile with reviews, opening hours and "we buy cars" as a service.
- Paid search for terms such as "sell my car" and "sell car to dealer" in your area.
- Part-exchange customers. Everyone who buys from you has a car to sell – make the trade-in process just as clear.
- Your existing customers. Your CRM knows who bought a car four years ago; ask whether they want an offer.
- Signage and social media. Simple messages: free valuation, fast payment, no obligation.
Avoid the tactic of a high online quote that is cut at inspection. It brings enquiries in the short term and destroys trust and reviews in the long term.
Making the service profitable
Track the service like any other source of stock:
- Enquiries, inspections and purchases per month.
- Conversion from enquiry to purchase.
- Average gross margin on cars bought from the public versus auction cars.
- Days to sell for these cars.
Cars bought from the public are often well documented, single-owner and free of auction fees and transport – and they frequently sell faster. But they also arrive one at a time and in any condition, so not every car you are offered belongs in your retail stock. Cars that do not fit can be passed to the trade at once.
Frequently asked questions
We buy cars: how a dealer buys directly from the public
Offer a simple process: online or phone enquiry, an indicative price from market data, an inspection, a firm written offer, then identity, ownership and finance checks and payment by bank transfer at handover.
How do I make a fair offer that still leaves margin?
Start from the expected retail price of comparable cars and deduct reconditioning, direct costs and your target margin. Check that the margin after VAT covers your overheads, and show the seller the comparable cars so the offer is understandable.
Who will pay the most for a used car?
Usually a private buyer, because there are no dealer costs or margin. A dealer offers less but gives speed, certainty and safety, and takes over the risk after the sale.
Which checks are needed before buying from a private seller?
Verify the seller's identity against the registration documents, confirm ownership, check for outstanding finance, compare the VIN and mileage with the documents and records, and run theft and damage checks. Pay only when everything matches.
Can I buy a car that still has finance on it?
Yes, if you settle the finance directly with the lender using a written settlement figure, and pay the seller only the remaining amount. Never pay the full price to the seller and rely on them to pay off the loan.