Question: what used car has best warranty?
Answer: Kia. Kia's mammoth seven-year/100,000-mile warranty is up there with the longest in the business. ... 
Ssangyong. Its mileage limit is 150,000 and cover for the audio/navigation unit lasts for seven years/150,000 miles - significantly better than Kia's three-year/36,000 mile offering. ... 
MG.