Here is mine.

 

I have 2 drivers with mixed driving styles - Odo reading 26000+ km, (16100+miles) car age 1+yrs old, average according to trip computer 11.5km/l or works out to be 27.05 mpg

 

We have a 2008 RX 350 and I have been using 92 octane but I have read several posting of other owners that use 87 and 89 is that ok to use?

John A

 

Yes. Computer will retard timing to prevent any knock. You might lose a few horsepower and MAYBE ~1 mpg. I used 87 octane in my 2007 ES350 for 4 years and 70K miles with no issues and still got 32 mpg highway at 70-80 mph. New RX's have been released requiring only 87 octane.

 

Hi Everyone,

after many Toyotas i finally made the jump to my first Lexus. just purchased it last week at Berlin City in Portland Maine.

so far i'm averaging 16.5 mpg. this is a big concern as i was hoping to be closer to 20 or 21 with the mix of city/highway driving my wife and i do. my sales rep told me he delivered a new RX recently to a person and he averaged 23.

has anyone found that after break in period mileage improves? thanks for listening!

Gibby / Topsham Maine

 

There are a few mileage threads that you can read on this forum. If you find them, you will see that others have reported mileage that can be in the 14 to 16 MPG range. But, most are higher than this range. Mileage can be affected by many factors. As you drive your car more, you will see higher numbers. Here are some factors that may be affecting your numbers.

1. Driver knowledge and driving style - this can have a big impact.
2. Driving fast on freeway - the faster you drive the lower your numbers.
3. Letting the car warm up and not driving off after you start it. Surprising big hit.
4. Short trip length. Especially, around town.
5. Winter gas and temps - expect lower mileage in the winter when using winter blend fuel.
6. Terrain - especially hills/mountains.

People that are getting higher than the EPA numbers are either living in a special environment (flat, warm, slow) or using a special driving style (granny on Valium, hypermiling). Your numbers will improve.

 

I was expecting better Mileage as I rolled out the door also; drove 400 Hwy miles after delivery and the best I was getting was 19.4MPG. expecting hwy to be closer to the 24 or more on the sticker. I’m happy so let’s see where we get as I break it in smoothly

I traded a 2005 545i which I was getting 27-28 on longer trips with a 325HP V8,.

 

I've been averaging 20mpg about 60 hwy/40 local roads.

 

Congradulations on your new purchase. Expect to get 18 to 19 mpg on city and 20 to 21 on the hwy. after breaking it in which usually starts after 1000 miles. Thats what I get here in Las Vegas, NV. I find that if I get stuck in stop and go traffic I usually get 16mpg. The trip to California gets me 23mpg max. Hope this helps. By the way I have a 2010 RX350 AWD.

 

Your mpg will improve once the vehicle is broken in.

 

Gibby, welcome to CL and congrats on your 350. In addition to the break-in period (5K is optimum), octane grade and the cold weather will have an influence on the mileage. The '12 can take regular. You may want to try a higher grade. Can't do anything about the temperature at the moment. Try not to get caught up on someone else's mileage. It'll get better.

 

My 2012 450H has now 1200K on it with about 50/50 highway/city miles. I do not hypermile but I do find that I am much more aware of my pedal pressure. I am averaging 9.5 liters per 100km which converts to around 25mpg US. I find I actually get better milage in the city than on the highway however I am getting 25mpg on the highway as well which is way better than my old Envoy got. I am hoping that once the break in period is over (5000 miles or so) that it will improve.

I am only using 87 octane gas as that is what is available here and it does contain 10% ethanol. The price difference between 87 and 93 is about 25cents a liter or an extra $16 per tank so I figure I am ahead of the game even if I get a few mpg less.

 

Dont forget that winter blend fuel in all octanes drop your MPGs.... Wait till late spring youll be back up in low 20s

 

The highway mpg might not improve, the electric motors only work in the city they can't produce highway speeds. Which is why you are seeing the same mpg in city and highway.

 

The electric motors work at all speeds in combination with the gas engine. Unless you watch the display it's pretty hard to determine when the car switch's from electric only to gas and electric propulsion. It's pretty seamless. But the electric motors can and do work at any speed except coast or stopped. Then at least one is working for power steering/air conditioning/computers/etc.

In fact, they are responsible for the difference in horsepower giving the (h) a total of 295 hp.