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Lexus RX 350 Real World MPG

52 messages,  Last post on Sep 07, 2011 at 8:10 AM

You are in the Lexus RX 300/330/350 Forum.

What is this discussion about? Lexus RX 330, Fuel Efficiency (MPG), SUV

Messages Page 4 of 6

#23 of 52 Mileage by davesuv

Oct 04, 2006 (8:20 pm)

Our RX350 AWD has about 7000 miles. Around town with all city driving we usually get between 18 and 19 mpg. With a light foot, you can stretch this to almost 20. We just came back from a trip. On expressway, we were getting 29 to 30 at 65 mph. (Highest sustained mpg on the computer was 30.6). At 70 mph, we got 28.5 to 29. Always use 89 octane fuel.
 
Have not done any real world calculations yet. All above mpg are from the trip computer with the Nav system.

#24 of 52 Re: Lexus RX 350: Real World MPG [steve_] by md_outback

Oct 24, 2006 (4:45 pm)

Replying to: steve_ (Jun 16, 2006 8:08 pm)
Update at 5000 miles: Overall average has been 20.5 mpg. During typical daily 18 mile commute of 60% highway and 40% local roads or jammed highways, I get very close to that overall average. On longer, highway-only trips (typically avg 70 mph), I get 24 to 25 mpg. Just around town brings mileage down very quickly to around 17-18 mpg. This data is based upon manual calculations after fuel fill-ups. Computer reading (with Nav system) is pessimistic up to 20 mpg (true mileage is better than computer), but then the computer is optimistic above a reading of 22 mpg (true mileage is lower than computer). Just drove another RX350 as a loaner during service call and that vehicle had a wildly optimistic computer reading of nearly 28 mpg for mixed driving. So don't always believe the on board computer - measure it yourself after each fuel stop. After using all grades of gasoline I have settled with 89 octane mid-grade as the best compromise, getting slightly better mpg than with 87 octane and with no noticeable difference in mpg or performance compared with premium. Great vehicle thus far!
 
MD

#25 of 52 Re: Lexus RX 350: Real World MPG [md_outback] by maximafan

Nov 01, 2006 (1:14 pm)

Replying to: md_outback (Oct 24, 2006 4:45 pm)
In regard to the mpg on the trip computer, I
try to go by the the second number that says
"average", the one that doesn't jump up and down so easily. I took a trip from Tampa,FL
to Blairsville, GA this past week and my highway mileage averaged around 28 mpg. One time it even went up to 31 mpg for about five
minutes. I didn't expect to get as good of
gas mileage driving through the mountains.
I guess with all the coasting and usually going
at a speed less than 55 mph made a big difference. I was very pleased with the gas
mileage on this trip. Unfortunately, in-town
driving at home in the city goes down quite a bit.
 
Before I left for my trip I was averaging around 17.5 mpg's driving around town. As of
today, since I've been back, the computer has
dropped down to 24 mpg. I expect this to drop
some more as I get back into the routine of
driving around town.

#26 of 52 Re: Lexus RX 350: Real World MPG [maximafan] by wcclee

Nov 16, 2006 (1:10 pm)

Replying to: maximafan (Nov 01, 2006 1:14 pm)
I've had my 350 for over 4 months now and get pretty close to the posted mpg ratings. For straight highway driving at ~70mph, I get 21mpg. The trip computer is consistently 0.5mpg more than what I calculate.
 
I don't see how people are getting 30mpg on the AWD model. At best, I will get 22mpg on flat highways with no traffic.

#27 of 52 Re: Lexus RX 350: Real World MPG [wcclee] by maximafan

Nov 20, 2006 (9:49 pm)

Replying to: wcclee (Nov 16, 2006 1:10 pm)
Mine isn't all-wheel drive. It's a two-wheel
drive.

#28 of 52 22 MPG City and 24-27 MPG highway by charles12

Jan 16, 2007 (12:23 pm)

I got my RX350 2 months ago and had the first chance to test the MPG on highway last week.
 
From Buffalo to State College, PA thourgh 219 highway with speed between 55 - 65 MPH, the computer showed 28.5 MPG and the real milage calculated by fill-ups was 27.4. Return trip through I-80 -> I-79 -> I-90 at speed around 75 MPH. The computer showed 25.5 MPG. Calcuating from fill-ups, the real MPG is 24.
 
I got 22 MPG in the highway/city mix communting from home to work.
 
Use 92-93 gas.
 
Not too bad for a suv.

#29 of 52 Re: RX350 regular gas or >91? [sxylxy] by 150mphclub

Apr 26, 2007 (6:14 am)

Replying to: sxylxy (Aug 18, 2006 6:41 am)
The door gives the recommended inflation for the car you are driving. The tire gives the maximum inflation to avoid blow out for any car the tire is mounted on.

#30 of 52 RX 2009 Model by gulfa

Apr 26, 2007 (11:09 pm)

I am willing to buy RX 350 now, but i feel that the new RX 2009 is coming next year. Once the new model arrived your car become old. I do not know to wait or buy now.I would apprecaiteany recomendations.

#31 of 52 Car and Driver skews mpg results by maximafan

Dec 18, 2007 (6:25 am)

I was just reading on AOL this morning a clip from Car and Driver
naming the top most fuel efficient Luxury SUV's. Of course, they
quickly eliminated the RX350 from the group by trying to limit the
top tier price of the cars. They said that the car had to be over
$46,000 for the top of the line model and the RX400h came in only at $43,000. I had to laugh at this one since we all know this car can climb over $43,000. But I think they did this 'cause they
know the RX would have beaten all the listed Luxury SUV's, Mercedes, Infiniti, Cadillac and such when it comes to overall
fuel mileage. I guess they're tired of the same old broken record, so they had to skew the results somehow.

#32 of 52 Re: RX 2009 Model [gulfa] by rviradia

Nov 11, 2008 (6:48 pm)

Replying to: gulfa (Apr 26, 2007 11:09 pm)
I would guess new model will be released in approx 7 months as 2010 model, so you should wait.
 
http://www.edmunds.com/insideline/do/News/articleId=134853#2

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