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 Comparing Investments This calculator compares the net gain of a taxable investment versus a tax-favored one. Safeguard Your Digital Estate If you died, what would happen to your email archives, social profiles and online accounts? Impact of Taxes and Inflation Estimate the potential impact taxes and inflation can have on the purchasing power of an investment.