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 Saving for College 101 Here’s a crash course on saving for college. Emerging Market Opportunities What are your options for investing in emerging markets? What Is My Current Cash Flow? Assess whether you are running “in the black” or “in the red” each month.