403,069 Miles (YES you read it right 400k+)and still feels smooth/reliable/ No major issues. This is my Second Toyota/Lexus vehicle. I bought this vehicle brand new (8 miles) five years ago and use it as my primary work vehicle (commute from Chicago to Atlanta) every week. I maintained it very good, (regular service, oil change, tries everything) but still my cost of maintenance was far less compared to any other vehicles like BMW/Mercedes (I owned both earlier and had ton of issues) I changed tires 8 times till date (every 50k miles). I am planning to trade in for 2012 RX450h (yes, I will make of my current vehicle till its hit 500,000 miles - Half million, I am very confident it will g
Our gas mileage has never been as advertised. We bought our RX400h with 8000 miles on it in Sept 2006. It was 1 yr old, the prior owner traded it in fast and took a $20k loss on the trade in. We have always averaged 26.2 mpg in a mix of city/hiway driving. We had the hybid inverter module replaced in Feb 2012. $10k+ repair! Our gas mileage then plummeted from 26.2 to 23.4 mpg. We suspect that Lexus reprogrammed the engine management computer to use the gas engine more and the hybrid less so as to extend the life of the batteries and inverter. This way, they won't have to make so many expensive warranty repairs. Please let us know if you saw the same thing with your mileage.
This has been the best car I've ever owned, however, I have never gotten more than 21 MPG. Beyond that, there are no cup holders for those in the back seats, which I never thought of until it became an issue. The navigation system takes too long to start & the update ($500) I paid for after a few years didn't include any noticeable improvements. In my 6th year, as well as this, my 7th year of ownership, I have experienced a new issue with the door to the gas cap sticking, with an annoying wait while gas visibly escapes to relieve pressure in order for the door to open. The dealer tells me this is normal, but it is new to me in all of these years. Its a fun car to drive but with flaws.
We were thrilled with this car when we first got it. A great, comfortable family car for long journeys and a greener option for the city. We knew the fuel economy wasn't going to be great but the fact that you knew you weren't going to be churning out fumes in slow moving traffic was the main winning point. (I walk a lot in town and hate going past slow moving traffic with my kids - it stinks). After a few months the car would not start. And ever since, we've had serious starting issues. New batteries didn't last and the problem persists. Internet searches show many others with the same problem. Lexus shockingly unhelpful.
Last year while far from home my RX400h stopped dead on the highway. After having it towed 145 miles and losing 3 days of vacation, Lexus replaced the computer to the hybrid system. The car was under warranty so other than a LOT of hassle, it only cost me $150 not $10,000+. Two weeks ago, I was driving in town and my car died again. Luckily I was able to get the car over to the side of the road--all the systems died. After about a week of trying to figure out what was wrong, Lexus determined it was the inverter and gratefully, even though out of warranty, the dealership replaced the part ($10K+) for free (98K miles on my Rx). My gas mileage has never been much more than 24-25mpg.