All new cars come with a car factory warranty, and some manufacturers’ car factory warranties are better than others. The initial car factory warranty offered by car manufacturers covers almost all items and parts in a new car for a pre-determined length of time or a specified number of miles on the car’s odometer—whichever comes first. For example, if a new car comes with a 3-year or 36,000 mile warranty, the car will be warrantied by the manufacturer for 3 years from the purchase date or until the odometer reads 36,000 miles. If your car or reaches 36,000 mile, within 1 year of the purchase date, then the warranty is no longer applicable, and vice versa.The Best Car Factory WarrantiesIt is hard to determine which car manufacturer actually offers the best car factory warranty; however, you can easily determine which manufactures offer the longest initial warranty, or that part of the warranty that is considered to be “bumper-to-bumper” and covers virtually all parts areas of the car. The “bumper-to-bumper” portion of the warranty generally covers mechanical breakdowns, faulty parts and even offers roadside assistance for the corresponding period of the car factory warranty. This portion of the warranty should not be confused with the powertrain warranty or corrosion warranty, as these warranties are very limited in scope and in what parts of the car they cover.The companies that currently offer the longest “bumper-to-bumper” warranties on their vehicles are: Hyundai, Kia and Mitsubishi. Presently, these car manufacturers offer a 5-year or 60,000 mile “bumper-to-bumper” warranty. In addition, Hyundai and Mitsubishi offer 5 years and unlimited mileage roadside assistance coverage with their warranties.