Clean the exterior with car-specific soap. Show that the car has been cared for and not hastily restored for sale.

If there's no paint damage, consider a paintless dent removal service.

If your auto insurance includes glass coverage, windshield replacement should be free, minus the deductible.

Vacuum, clean the upholstery and carpets, and dust all surfaces. The details make the difference.

A clean engine bay gives the impression that the mechanics have been well maintained.

Repair or replace broken items as needed.