The NX's turbo has been pretty reliable with the exception of some early issues with the turbo wastegate. The average life of a turbo is around 150,000 miles depending on how hard you drive it among other factors.

 

I SURE HOPE YOU'RE WRONG!

I drive appx. 25k/year. I've had mine for 2 years and already have 50k on it. That means the expected life is only 6 years! That makes me want to throw up !

I sure hope someone in Lexus-Land has something contrary to say.

 

The 150000 is just an unofficial average, as we all know, turbos are very hard working and gets really hot, that is why early on, people dislike turbo engines due to the higher maintenance. Turbos and turbo systems have come a long way, the material is better and the cooling is better, Like most things, if you baby your engine such as dont go pass 2000 rpm before it is warmed up and things like that, you will get more life out of a turbo.

 

This 2017 Toyota Rav4 hybrid (almost identical car to NX300h) was driven to 550k miles with minimal maintenance (e.g. oil changes every 20k miles!!!) and then traded in.

https://www.rav4world.com/threads/50.../#post-2937047

 

Well, I just noticed that the title of this thread didn't specify the ENGINE, which is MY ONLY concern. To the best of my knowledge, there were 2 engine 'configurations' offered

• 4 cyl TURBO
• Hybrid

I am concerned about the longevity of a 4cyl TURBO vs an old fashioned 6cyl (not concerned about the longevity of a hybrid)

 

I agree the turbo unit MAY be the week point in this engine. Turbos add a layer of complexity to an engine. It is a power-boosting device attached to the vehicle's exhaust manifold. As such, it is stressed by heat and a high spinning turbine. They are more sensitive to poor maintenance. So, change your oil regularly and keep a close eye on the coolant temperature. I maintain my sister’s 2015 NX200 and it has about 110K. I flushed the coolant and ATF right at 100K. Will do again at 150K.

 

The “common knowledge” is that if you did not replace ATF regularly, replacing it on high-mileage transmission will/may damage it. This is because fresh ATF will lift deposits accumulated in transmission and they may clog narrow passages, thus restricting fluid supply to some critical point, etc. Is this true or not, debatable, but I actually had this happen to one of my cars (Acura), years back, when I replaced ATF at 100K miles on odometer. Trans failed just few hundred miles after.

I have 80K miles on my NX and never replaced ATF (though regular driving and no towing), as even dealer declined to performed this service due to “ATF for life” (I think it is BS, but…). So, couple of questions for you:
- NX transmission rated as reliable one and typically shifts very smoothly. However, do you feel transmission operates differently since new ATF? If yes, what is the difference?
- How did old ATF look like? Burned? Smell?
- Why do you want to replace ATF at 150K, only 40K after fresh one. Or this comment was addressed to coolant only?
Thanks.

 

@Lex2000TL I go by Toyota/Lexus' special operating conditions in replacing the ATF in my Toyota/Lexus vehicles I maintain. That is to flush the ATF every 60K if you tow, off-road, commercial-use, etc... The NX is my sister's car that I began maintaining at about 70K. I wasn't able to get to the ATF until 100K. The biggest issue with replacing ATF past 100K is if the ATF is contaminated with metallic and clutch material because removing that ATF fluid will cause the clutch to slip. In such high mileage transmissions replacing the ATF filter should still be considered. In other cases, you inspect the pan for metal shavings and clutch material. If you see any, you do not flush out the ATF. If all you see, as I did in the NX, is black gooey substance on the magnets, then you are good to proceed with a flush. I also replaced the WS fluid, as I have in my other Toyota/Lexus vehicles, with Valvoline MaxLife ATF. The color of the NX' OEM ATF was what I expected - mostly brown with a pick hue. The car shifts normally. At 150K, I plan on replacing the ATF filter and will do a drain/refill, not a full flush.

 

Very detailed answer. Many thanks!

 

Reviving this thread for those interested because I found an NX with 240k miles! Carfax looks pretty straightforward. https://www.carfax.com/vehicle/JTJYARBZ1G2045363

 

Looking at the ad and the Carfax, this actually looks like a good deal!
Looks like the owner was smart enough to do regular maintenance.

I'm VERY surprised that places like Valvoline and Pep Boys are even able to report to CarFax. I though it was primarily auto dealerships that had that connection.

 

I just bought a 2017 Lexus NX300h. with 179,000 miles . The car was maintained by dealer and oil changers later on. NEver needed any engine work, no tranny work, no other work. Just normal wear items like tires, brakes ( front) and oil and tranny fluid changes.

Since the orgiinal hybrid battery was not changed out, and the Lexus warrants it for 10 yrs /150.000 miles, I thought i would be needing a change soon. I called a few hybrid battery repair shops, and they all say the hybrind battery should still be good to go. ONe guy said up to now he has only done 2 NX300h hybrid battery changes so far . They feel the batteries are very reliable and can go to 200,000 and beyond, as long as proper hybrid driving protocol is followed and car is not left to drain to zero frequently. Also, must maintain cool temp and make sure the hybrid cool air intake is not clogged.

 

Longshot, did you pick up the white 300h that was listed at Travis AFB in Northern Cal?

 

LOL.... Touche ! Its a very well maintained vehicle. It looks virtually brand new.

 

Haha, dammit and congratulations! I had been looking for an NX for my folks and messaged the seller to buy it before getting the reply that it just sold
I just picked up a different 2015 200t and drove it back for them last week ^_^