How long is a SORN valid? Indefinitely. As long as you don’t drive, sell, or scrap the car, it’s valid forever. No expiry date.
But remember: you must renew the SORN declaration on your vehicle tax every year. Think of it as a “still sleeping” update.
So go ahead—let your car sleep for a decade. Take a vacation. Your SORN will wait. It’s the most patient legal document you’ll ever own.
Now go tell someone this fun fact. They’ll be amazed you know the secret of the eternal car nap. You’re welcome.