Interested in a Fuel Efficient Car? Estimate how many months it may take to recover the out-of-pocket costs when buying a more efficient vehicle. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Volunteering in Retirement For many, retirement includes contributing their time and talents to an organization in need. 7 Questions to Consider in Retirement Explore these must-ask questions for pursuing and living out your dream retirement. When Does Your Personal Car Become a Commercial Vehicle? At what point can you call a personal vehicle commercial?