What is the toyota rav4 engine noise?

A noise from the engine of the Toyota RAV4Could be a variety of things. One common one is low oil levels. With low engine oil, the car might develop louder than usual sounds, as a result of not being properly lubricated. Topping it up will typically dampen the noise. Other things like bad bearings found in the pulley could cause the engine to generate noises that seem unsettling. Driving the car around and paying particular attention to where the noise is coming from, or if there are certain actions that trigger it will go a long way in helping You narrow down the culprit. If the sound is very significant, it is a good idea to take it in to a mechanic to take a look. Just to avoid potentially risky situations.