Toyota vehicles are some of the most reliable on the market. Most of the vehicles keep running for over 100,000 miles, especially with proper maintenance. Part of that proper maintenance is servicing the engine. This can include but is not limited to checking spark plugs, wires, belts, and other engine components.
How do you know when it is time for your engine to be checked? It can be checked at the same time that you have an oil change, or when anything else on your vehicle is being serviced. This way, your entire car can get a good once over before returning to the road. Otherwise, if you hear noises coming from under the hood of your vehicle that you have not heard before, this is also a good indicator that you should have your engine looked at.