Tax: in Germany, selling a car you used privately is generally not taxed as income, because everyday objects are excluded from the private-sale rules. Your home country may see it differently, so check with a tax adviser if the amount is significant.
Registration, insurance and tax stop once the buyer re-registers the car or it is deregistered. If the car is sold without plates, we deregister it first using the three security codes. See how to deregister a car in Germany. Tell us the sale date so the insurer and registration records are updated.
Washing and cleaning to prepare the car for sale may be billed separately.
Taking the car with you instead? Export plates (only for cars registered through CarTurf): you mail us registration certificate Part I (Zulassungsbescheinigung Teil I) and the current plates. We turn them in and get export plates plus export documents in your name, within 1–3 business days of receiving the documents. Prices including liability insurance: 30 days €300, 60 days €590, 90 days €790. We don't arrange shipping to the USA, but we can recommend shipping partners.