SONJA

Sell privately or trade in? See the difference in kroner

A private sale usually fetches the highest price, but you keep liability for defects for up to two years under the Norwegian Sale of Goods Act. Trade-ins and dealers typically pay 15–20% below market price, but take over all liability. Here is the math for your car.

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How we calculate the estimate

The trade-in estimate uses a typical range of 15–20% below market price, based on common dealer margins for reconditioning, warranty, and resale risk in the Norwegian used car market. The listing cost is an estimate for a standard car ad on Finn.no. The Sonja column never shows a number here — a real offer requires an individual assessment of your car.

Get a real offer from Sonja

The tools above give a rough indication. At Sonja we buy your car directly — first a free price estimate, then a concrete purchase offer you can consider at your own pace.

Free and non-binding

Your options when selling a car

Time involved
Sell with SonjaFast – often an offer the same day
Other dealersA few days
Sell privatelyVaries – often time-consuming (inquiries)
Inspection
Sell with SonjaWe arrange it
Other dealersDrive to test centre
Sell privatelyMany test drives
Warranty liability
Sell with SonjaNo – we take responsibility
Other dealersNo
Sell privatelyYes – for 2 years
Sales process
Sell with SonjaWe handle everything
Other dealersBidding process
Sell privatelyYou handle everything
Payout
Sell with SonjaFast after agreement
Other dealersUp to 14 days
Sell privatelyUncertain wait
Car collection
Sell with SonjaWe collect for free
Other dealersCar must be delivered
Sell privatelyHandover arranged yourself

The choice between a private sale and a trade-in is in practice a choice between price and convenience. The difference in kroner is real — on a car worth 300,000 kr, 15–20% amounts to 45,000–60,000 kr. That is a lot to pay for avoiding the work of the sale.

At the same time, many underestimate what a private sale actually requires: an ad with good photos, inquiries to answer, viewings and test drives with strangers, haggling, and finally the paperwork of the ownership transfer. And even after the money is in your account, the buyer can come back with a defect claim.

A third option is selling directly to a professional buyer like Sonja: you get a concrete offer based on market data, skip viewings and ads, and liability transfers at the sale. The price normally sits between a private sale and a traditional trade-in — and the offer is free and non-binding, so you can compare before deciding.

Questions and answers

Frequently asked questions

How much more do I get by selling privately?
Typically 15–20% more than with a trade-in or sale to a dealer, because you sell at market price without intermediaries. On a car worth 250,000 kr, that is 35,000–50,000 kr. In return, private sellers often spend several weeks on the sale, and you carry liability under the Sale of Goods Act for up to two years.
What is the seller's liability in a private car sale?
In a private sale, the Sale of Goods Act applies. The buyer can claim for defects that existed at handover, even if they appear later — ultimately for up to two years (section 32). An "as is" clause in the contract helps, but does not protect against information you withheld or significant hidden defects. If you sell to a business, they take over this risk.
Is trading in my car worth it when buying a new one?
A trade-in is simple: one transaction, no advertising, and liability transfers to the dealer. But the trade-in price is often set low, and the discount on the new car can be "baked into" the trade-in price, making the total math hard to follow. Always ask for separate prices for the new car and the trade-in, and compare the trade-in price with an independent offer.
What does it cost to sell a car privately?
The direct costs are small: a car ad on Finn.no costs around 900 kr, and the re-registration fee is normally paid by the buyer. The real cost is time — the ad, inquiries, viewings, and paperwork — plus the risk of defect claims afterwards. Also expect buyers to almost always negotiate below the asking price.

Other tools

Depreciation calculatorSee the depreciation curve for your carAvoid scams when selling privatelyRead the rules before you sellEV value and batteryAdjust battery health and see the impact

Read more