A riding mower can last anywhere from 10 to 15 years, depending on how well you take care of it. Of course, the more you use it, the sooner it will need repairs or replacement parts. But if you keep up with regular maintenance and storage, your riding mower should give you many years of service. One important thing to remember is to always change the oil and sharpen the blades. This will help to prolong the life of your riding mower and keep it running smoothly. Additionally, be sure to store your mower in a dry, sheltered place during the winter months. Taking these simple steps will help to ensure that your riding mower lasts for years to come.