Keep 10000 km in 4S once! A guarantees around 1600 yuan, B guarantees around 3,500 yuan, and AB guarantees rotation! 30 thousand kilometers a year, usually 6-7 thousand, almost! Now it's a three-year warranty. After the warranty period, find a suitable repair shop to do it yourself. The price can generally be cheaper by more than one third! When buying a car, you can ask for a maintenance fund of 20 thousand, three years is enough!