Different dealer warranties will be...different. We offer a Limited Lifetime Powertrain on used cars (under 10 years old, under 100,000 miles, non-transferable) included with the vehicle at time of purchase. It covers basic mechanical issues with the power and drivetrain. The warranty is called MAP (Motorist Assistance Program) from EFG Companies and is honored nationwide (not everyone, but not just our dealership). You do have to maintain the vehicle, as repairs are not warrantied in the case of neglect, improper maintenance, or backyard mechanic work. Essentially that means keeping your car on it's normal maintenance schedule. One thing it does not cover are checks/gaskets/seals/cv boots. If those need replacing, you have to get the checkbook out. If they result in a failure, the warranty will not cover the work (i.e. torn CV boot leads to CV issues, warranty does not cover because you should have had the boot replaced). All of that can be caught on a routine inspection done every 12 months. If you want everything covered, there are options for that offered at an additional charge.