What is a safe RPM range?

For the best fuel efficiency, keep your RPMs between 1,500 and 2,000 RPM when driving at a constant speed.

Can driving at high RPM damage engine?

Originally Answered: Can a high RPM damage an engine? Absolutely. The higher you rev the engine, the higher the forces are on the components in your engine. Most manufactures do a high RPM stress test where they just have their engine running essentially redline for hundreds of hours to see what breaks.

Is it safe to drive a car at 4000 rpm?

That sounds like a very low gearing. Ultimately it will wear quicker and the components will be more stressed. Assuming the engine is healthy it should be fine at 60 MPH, plenty of popular cars cruise at 4K+ RPM at 70–80 MPH and run for 200K+ miles no problem.

What rpm should my car be at 80 mph?

You should be at around 3300-3400 rpm at that speed.

How bad is it to run at max rpm?

High RPM get much worse nearing max RPM. Max RPM is the limit that the engine can take before severe damage. Running at or near max RPM for extended periods will drastically reduce engine life. Engines are usually more efficient at lower RPM as well.

Is revving your engine to high RPM bad for the engine?

If you rev your engine to high RPM on occasion and only keep it there for brief periods of time, generally this is not going to cause much damage to the engine. Like I said, they run the engines for hundreds of hours at high RPM.

How much RPM is too low for a car?

If you drive at 5,000 RPM, that bearing is going to use up its lifetime twice as fast as if you were driving at 2,500 RPM. On the other hand, “lugging” an engine at too low an RPM can be harmful, as well. If your prime directive is mechanical lifetime, shoot for lower RPM within a reasonable range (i.e. not lugging).

Is lugging the engine at low rpm bad?

On the other hand, “lugging” an engine at too low an RPM can be harmful, as well. If your prime directive is mechanical lifetime, shoot for lower RPM within a reasonable range (i.e. not lugging).