RX - 5th Gen (2023-present) Discussion topics related to the 2023 and up RX models

2023 RX350 4-cylinder Engine

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Old 03-24-23, 08:03 AM
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GoldenYear
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Opened up a can worms . I opted for a used RX350 2021 with Lexus's awesome 6 cylinder beauty .
Old 03-24-23, 08:11 AM
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Originally Posted by Vguitarist
I decided to bite the bullet and have reserved a '23 RX350 Luxury. Still have reservations about the 4-cylinder engine, but time will tell...
"bite the bullet" is banned now in all 50 states . True story .
Old 03-24-23, 08:12 AM
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daryll40
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Originally Posted by GoldenYear
Opened up a can worms . I opted for a used RX350 2021 with Lexus's awesome 6 cylinder beauty .
Not sure what you meant by opening a can of worms, but you can’t go wrong with a 2021RX.
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Old 03-26-23, 09:45 AM
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sailormike
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FWIW our 2023 RX350 was in for some work, and we got a 2022 RX450h as a loaner. We were surprised at how much noise and vibration there was from the hybrid 4 cylinder. Granted different model year but we could not wait to get our RX350 back. Very happy first time Lexus owners.
Old 03-26-23, 11:13 AM
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toyotaman7
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Originally Posted by johnllx
Doesn't non-hybrid RX350 have more horsepower then hybrid one? So, non-hybrid should be closer to v6, no?
The RX350 gas with the turbo 2.4 needs to be reved for turbo to do something to add torque to move the car. The RX350h on the other hand has electric motors that kick in right away helping the car move, much quieter and smoother.

Horsepower is meaningless in everyday driving in the city. High speed driving is where HP is meaningful.

Torque is what gets the car off the line.
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Old 03-26-23, 11:32 AM
  #21  
Urlik
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The turbo 4 makes maximum torque at only 1700 rpm though, it passes the hybrid torque pretty quick. Plus the turbo has this huge flat torque curve through the rev range while the hybrid will keep building until the engine torque hits max at 4500 rpm. The turbo 4 engine starts the power curve at about 200 ft lbs while the hybrid is rated at 233 ft lbs max.

Turbo 4 engine: https://www.automobile-catalog.com/c...html#gsc.tab=0
Hybrid engine only, would need to add the electric motor torque: https://www.automobile-catalog.com/c...html#gsc.tab=0

Last edited by Urlik; 03-26-23 at 11:36 AM.
Old 03-26-23, 01:29 PM
  #22  
jer
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Originally Posted by sailormike
FWIW our 2023 RX350 was in for some work, and we got a 2022 RX450h as a loaner. We were surprised at how much noise and vibration there was from the hybrid 4 cylinder. Granted different model year but we could not wait to get our RX350 back. Very happy first time Lexus owners.
Do you mean the RX450h had a lot of NVH? I believe that was still a 6 cyl unless they gave you a '23 RXh as a loaner.
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Old 03-26-23, 02:13 PM
  #23  
sailormike
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Originally Posted by jer
Do you mean the RX450h had a lot of NVH? I believe that was still a 6 cyl unless they gave you a '23 RXh as a loaner.
My mistake I assumed the 2022 RX450h had a 4 cylinder. You are correct it had a 6 cylinder (sorry first time Lexus owner). I would not say the RX450h had a lot of NVH, but it seemed to me that the RX350 Turbo 4 had less.
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