Schedule a complete and engine diagnostics (professional maintenance) check every 15, 30, 60, and 90,000 miles.
The diagnostics of a car's engine are very complicated. Nothing really tells you when anything has gone awry. Most cars have a Check Engine light that turns on, but even this light does not indicate exactly what the problem is. The only way to find out is to have your mechanic run an engine diagnostics test on your vehicle.
There are several reasons to have a full diagnostics test run on your car. With today’s vehicles being basically run by computers, if anything goes wrong an indicator light will turn on. Take the vehicle to your mechanic when the light comes on. Make sure you have a qualified, certified mechanic that you know and trust. He will be the one, who will help keep your car running smoothly for a long time.
If you are a do-it-yourselfer, you can get many diagnostic supplies at your local mechanic shop as well. In addition, he can help you with any questions you may have. For most new cars it is necessary to have state of the art diagnostic equipment and trained technicians to decipher the root cause of your car engine's issues.