The problems that I mention in this post have been fixed. I’m at 3700 miles now and absolutely love this car. Search my name on this site and read my most recent comments in other threads.

When I decided to get two luxury cars/ the one thing I didn’t consider was road noise. What a nice surprise. Both my ‘22 and ‘23 are by far the quietest cars I’ve ever owned- so nice. Yes,if you always harshly accelerate the ‘23, there will be road noise due to the 4 cyl motor. On the freeway it is very quiet.

 

Regarding the four cylinder noise (and I have some perspective, owning both a new 2023 RX and a 2013 RX with the 6 cylinder engine) my impression is that the four cylinder noise is an engineered, one, i.e. I believe they want it to sound that way, a bit sporty and all. I can't confirm that, but I do know many automakers tune their engine/exhaust systems to give them the sounds they want...anyway, both cars have been great and the noise doesn't bother me one bit. Fingers crossed the good experience continues with this car, only have 4k miles or so.

 

I don't think so. The competing cars in this segment don't have "loud" engines from their 4 cylinder turbos. It's only really raspy on heavy acceleration, but the Germans are quieter, and in this segment quiet=smooth. In other words, the raspiness makes for a less smooth experience, even though power delivery is actually smooth.

 

Agree - the 2.0T in my Q5 was very quiet from the driver's seat and always smooth; the only jerkiness from that drivetrain was from the dual-clutch transmission, and even that was only in specific instances - very smooth power and shifting at WOT. I am finding that while my 350 is relatively quiet and has more torque than my Q5 did, I am still trying to get used to the drivetrain sounds and responsiveness in the 350. Even with more torque, the 350 is nearly 2 seconds slower 0-60mph than my than my Q5 was, even with only 110 lbs difference in curb weight between the two.

 

I don't consider this engine loud in the least. Yes, it does make noise (as you say) when heavily accelerating, but how often do I do this? On our latest trips, several times when accelerating onto an Interstate...other than that, quite sufficiently quiet. I guess it's just a matter of taste. My 2013 RX with the 6 cylinder engine also made noise when accelerating...

 

Toyota's 2.5l 4 cylinder engine has always been noisy. I looked at a 2021 Rav4 and ended up buying a Honda CRV hybrid that year as it was quieter. Lexus does have a little more noise insulation but it still noisy when accelerating compared to it's competition.

 

Yes...but that's a different engine altogether.

 

It is the same 2.5L engine (A25A-FXS) for both the RAV4 Hybrid and the RX350H; it has been used since 2017/2018 in numerous Toyota/Lexus hybrid models. Good reliability, but noted as having quite a bit of noise/vibration under WOT.

 

Not talking about the 350H, the discussion is about the base RX 350 turbo engine (2023) which was introduced in the NX a year ago.

Westwind says he has a 350 Luxury.

 

Ah - I meant my reply to jahnjva's last comment RE the hybrid 2.5, not the OP and the 2.4T (T24A-FTS)

 

Only had my 2023 Lexus 350rx for 1 week. Today, when I started the car, I got the Drive-Start Control Malfunction. I noticed that some of you said the battery, but I shouldn't be having that problem yet!!! Sounds like they still don't have this problem worked out.

 

Hmm you might have a different issue since yours is the new 5th gen RX. If it's not a different issue, then the issue is the battery located in the engine bay. I would go to the dealer and see if they'll replace the battery.

 

I am also thinking since this problem is related to safety systems. The reason someone of us aren’t having these glitches is because we have shut them off manually. I have every system shut off expect collision migration, so curious if by doing that we are avoiding this issue from arising.

It not just Lexus but they have now over taken our cars with this no-sense that is nothing but distraction. Yes collision migration and parking / blind sensors are good but everything else that takes over and causes nothing but beeping are distractions. If you have these systems on even if your driving normal the car is applying the brakes on its own without you doing anything but maybe driving to close or going fast on turn. I had first thought it was some kind of overspeed or transmission issue no it was car self braking bc it thought I was driving to aggressive. Worst things is Lexus doesn’t even know how it operates or should.

Maybe it strikes cord with me bc I am commercial pilot and experience same kinda nonsense on newer aircraft builds. They finally have made it easy for us to simply shut off these types of systems which cause unnecessary noise and pure distraction. Computers are great, so is safety features, but any operator needs to be able to have control.

 

I've turned off a whole bunch of those things for when I drive the RX. Some are handy, like the prox sensors that show close objects. But other scare me.

 

The only thing I have off is the lane departure steering control, although I do turn that on sometimes as its required for the traffic jam assistant. I wonder, when you turn that off, will it still steer to avoid a side impact collision?