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 Question Thank you! Oops! Related Content Changing Unhealthy Behaviors Five phases to changing unhealthy behaviors. How Will Working Affect Social Security Benefits? Knowing the rules may help you decide when to start benefits. The Cost of Procrastination Don't let procrastination keep you from pursuing your financial dreams and goals.