Is it worth restoring an old car before selling it at auction?

Sometimes, but often not. Full restorations frequently cost more than the finished car will bring, and buyers of project cars and survivors are a big part of the collector market. Many enthusiasts would rather buy an honest, unrestored car and do the work their own way.

Original, unrestored cars in good condition can be especially desirable, and redoing them may actually lower their appeal. On the other hand, a car that does not run, has major rust, or is missing key parts may sell for much less than one that is safe and drivable.

A middle path is often best: clean it thoroughly, gather the records, fix small mechanical issues, and get it running if practical. Talk to an auctioneer who handles collector vehicles before committing to big expenses. They can tell you what buyers in your market are paying for cars in similar condition.