QUICK ANSWER
No. The seller's insurance ends as of the ownership-change date. Driving home without your own cover means driving an uninsured vehicle, and you're the one who carries the cost if anything happens.
Many sellers mean well when they say you can drive home on their insurance and sort out your own tomorrow. That offer can't actually be accepted, however kindly it's meant.
Once the ownership change is registered with Monday's date, the seller's insurance ends as of Monday. It doesn't cover your drive home. If you crash on the way, there's no insurance to cover damage to the vehicle, and you could be personally liable for damage you cause to others. Meanwhile, the Swedish Transport Agency sees that you've owned an active, uninsured vehicle, and the fee from TFF follows.
Driving an uninsured vehicle is also an offense under the Traffic Damage Act.
Want to avoid this altogether? See buying a car on a weekend or evening for how to take out your own cover the moment you buy.
Sources: Swedish Transport Agency, insurance at ownership change. Last checked: 2026-09-21.