Auto Repair Invoice Forms are printed on NCR carbonless paper. They can be constructed as a booklet with wrap around cover or as individual invoices glued at the edge. 8.5" x 11" and 5.5" x 8.5" are two of the most common sizes. There are many other options to customize an automotive repair invoice. Add a logo, your company name and more. Some forms are designed specifically for a state like those for California, Florida, and Connecticut. Auto shop and centers love our forms because they are easy to use. Blank invoices allow you to manually write in your business information.