Typically, a Powertrain auto warranty covers the Engine, Transmission, and Axles of your car. Powertrain coverage usually lasts for 60 additional months or 100,000 additional miles whichever occurs first. Many companies offer Powertrain protection, plus a lot more including coverage for your fuel system, windows, air conditioning, heating and cooling. This Powertrain (*Plus) protection is very inexpensive and is valuable for older cars with over 100,000 miles because you can still get comprehensive protection for 60 additional months or 100,000 additional miles whichever occurs first. Check your contract for complete details.