_When going over a tall speedbump in my 2021 IS350 the car reported low_engine_oil only once. Should I be concerned? I didn't see anything dripping out of the car, no smell. Thank you

 

I would at least check the engine oil level to confirm it is full.

Realistically it shouldn't have given you that message by just going over a speed bump.

 

check your oil level asap as Sasnuke said that shouldn’t happen

 

You should be concerned. Check the oil dipstick level ASAP and if possible look underneath the car.

 

I've been over tons of speed bumps in my 2021 over the past 4 months and have never seen a low oil warning.

If you don't feel like opening the hood, you could always use the Lexus app on your phone to check what it says about the oil level. However, even if it says it's fine, I would still report this to your dealer.