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 Capital Gains Tax Estimator Use this calculator to estimate your capital gains tax. Managing the Risk of Outliving Your Money Steps to help you sustain and grow your retirement savings. Taxable vs. Tax-Deferred Savings Use this calculator to compare the future value of investments with different tax consequences.