Engine noise

Masiv44 · February 8

I've been a bit surprised by how noisy the engine can be. Under acceleration it sounds quite growly. I'm used to cvt gears so I know it's not that sound.

Even my wife commented on it being louder than expected.

This is just from cold, so will be noisier anyway. I'll have to get a recording of it under acceleration.

GMB · February 8

Sounds like other people have had similar issues. In the old days ( and I do mean OLD ) we used to put a bit of molyslip in a worn engine, worked wonders, but I think nowadays that may interfere with something else and is probably not recommended.

Lexus RX 450h - invasive engine or exhaust noise in cabin

My 2012 Lexus RX 450h has developed a loud engine noise. The noise is persistent and deep - almost like a base note. I have owned a RX 450h before and it never made this noise. My local Lexus dealer cannot, or does not want to, find a solution, despite spending 4 1/2 hours removing exhaust system and manifolds. Where can I go for an expert and unbiased appraisal opinion, I don't want to return to the same dealer.

Asked on 9 July 2016 by fivelnote

Answered by Honest John

This is an Atkinson cycle engine that revs in steps rather than in a linear manner, but you know that. Unless the programming is sticking, what you describe simply should not happen. You need to find an independent Lexus hybrid specialist. If you Google <Lexus hybrid specialists> you'll find a few; hopefully one reasonably close to where you live.