The average cost of a car warranty can vary widely depending on the type of coverage and the make and model of the car. Basic powertrain warranties may cost around $500-$700 per year, while more comprehensive warranties can cost upwards of $1, 500 per year. Luxury and high-performance vehicles may have higher warranty costs due to the complexity and cost of repairs. It is important to research the different warranty options and compare costs before purchasing a car warranty.