Just like anything else, your vehicle has parts that have a life expectancy. These parts and their life expectancy are shown in your owner's manual with specific manufacturer benchmarks, about every 30,000 miles.
A routine tune-up can easily protect against major engine problems by finding and changing worn components such as spark plugs and fuel filters. Keeping a regular tune-up schedule will help your vehicle last much longer, preserve a higher fuel mileage, boost efficiency and prevent your car from breaking down in the middle of the road for minor issues. While these parts may last longer than the suggested time frame, it is a good idea to have them checked by a qualified mechanic on a regular basis. If these parts are not regularly inspected and car diagnostic is not performed, a major issue could occur.