IS - 3rd Gen (2014-present) Discussion about the 2014+ model IS models

Concerned About Fuel Consumption ~ 13 MPG ??

Thread Tools
 
Search this Thread
 
Old 07-25-17, 05:41 PM
  #16  
LaZeR
Advanced
Thread Starter
 
LaZeR's Avatar
 
Join Date: Jun 2017
Location: from CA to FL
Posts: 638
Received 43 Likes on 37 Posts
Default

Originally Posted by cremaster
apples to oranges but thought i'd provide my average as another point of reference. i also live in LA, about 20 miles daily in traffic for my work commute on the 405 and surface streets. i drive it hard pretty much all the time, in manual whenever there is any open space (and when it's safe, of course), and average about 14 to 15 mpg on the tank. so, your 13 mpg does seem really off.
Thanks for the reference, albeit assuming you don't drive a 3rd generation IS.

Also, a bit off topic, but how do "open spaces" or "safety" correlate with manual shifting? Not sure what ya mean since I engage manual whenever and wherever regardless of traffic ...

Last edited by LaZeR; 07-26-17 at 01:02 PM.
Old 07-25-17, 09:26 PM
  #17  
nathantse
Lexus Test Driver
 
nathantse's Avatar
 
Join Date: Dec 2015
Location: California
Posts: 1,476
Received 60 Likes on 55 Posts
Default

Did you RESET your average mpg calculator? Hold the middle button on the right-hand side of the steering wheel. NOTE - Best to Reset MPG after each refuel.

Also, are you using premium gas? And what kind of commuting are you doing?

For reference, on my IS350, my old job is mostly all hwy. ~30 miles each way (~60 miles total/day). I drive in ECO mode, and hovering around 2K RPM, and I average 23-24 mpg combined.

My NEW job, is ~12 miles each way (~25 miles total/day). However, mostly stop-n-go traffic and city driving. I drive in ECO mode, RPM varies, and I average about 20-21 mpg combined.

My car has ~20k odo, the only time I saw my car with even crappier MPG was when it was brand new.
Old 07-26-17, 11:39 AM
  #18  
cremaster
Lead Lap
iTrader: (1)
 
cremaster's Avatar
 
Join Date: Sep 2011
Location: ca
Posts: 735
Received 70 Likes on 35 Posts
Default

Originally Posted by LaZeR
Thanks for the reference, albeit assuming you don't drive a 3rd generation IS.

Also, a bit off topic, but how do "open spaces" or "safety" correlate with manual shifting? Not sure what ya mean since I engage manual whenever and wherever regardless of traffic ...
correct, i do not drive a 3IS but rather an 09' isf. i drive in manual 90% of the time, after i hit two bars on the oil temp. i was just saying i drive spiritedly whenever there are 'open spaces' or when it's "safe", i.e. minimal traffic.
Old 07-26-17, 07:36 PM
  #19  
link13
Lead Lap
 
link13's Avatar
 
Join Date: Nov 2001
Location: CA, Mid OC
Posts: 3,878
Received 45 Likes on 39 Posts
Default

Originally Posted by tea
I can see 13mpg in West LA traffic. Short trip moving only 5-10 mph during rush hour or for most of the day for that matter and circling around looking for parking can definitely result in 13 MPG. The 405 and the 10 aren't any better.

Take a road trip away from LA and see how it does. I'm sure it won't be 13 mpg anymore
Agreed here. I have a 2016 IS350 with just under 10K miles. With a short commute and around town driving about 85% of the time, I have seen 12.8 MPG, 14.1 MPG, etc. The car is getting negative mileage per gallon while idling in traffic. When I go to my folks' place, I refuel and reset the AVG MPG and I get 24 mpg on SoCal freeways, which on weekends, are moving along ok.
Old 07-26-17, 11:46 PM
  #20  
Jay89
Pole Position
 
Jay89's Avatar
 
Join Date: Jul 2017
Location: Canada
Posts: 240
Received 27 Likes on 25 Posts
Default

One of the things I noticed was how thirsty my Lexus was compared to my old bmw. Used to get almost 30 mpg and I drove that thing fairly hard as well. Now I get on average about 20-22 mpg driving it on Eco, and being fairly gentle with the throttle. My Subaru does about that, and it's not exactly tuned to be fuel saving.

seems though that low to mid 20s is fairly common. Guess I'll just live with it haha. 13 seems a bit low though. From my own experience, it still takes a bit of effort to drive it down that far

Last edited by Jay89; 07-26-17 at 11:49 PM.
Old 07-27-17, 07:40 AM
  #21  
volthause
Driver School Candidate
 
volthause's Avatar
 
Join Date: Jun 2017
Location: NC
Posts: 29
Received 4 Likes on 4 Posts
Default

I've had my 2015 3IS for a short while, and hand calculate MPG. I've seen as low as 15 mpg around town, and as high as 28 mpg on a highway / road trip. 13 mpg wouldn't be abnormal to me with a mix of (mostly) stop and go traffic, with some spirited runs intermixed.
Old 07-27-17, 09:29 AM
  #22  
TimboIS
Liquid Bra Champion
 
TimboIS's Avatar
 
Join Date: Aug 2005
Location: ƒ(x)
Posts: 2,831
Received 139 Likes on 96 Posts
Default

My 11+ year average on the IS350 was 21.6 mpg. You can see the big change in mpg when I moved from the suburbs to the country.

Old 07-27-17, 03:16 PM
  #23  
LaZeR
Advanced
Thread Starter
 
LaZeR's Avatar
 
Join Date: Jun 2017
Location: from CA to FL
Posts: 638
Received 43 Likes on 37 Posts
Default

Originally Posted by Jay89
... 13 seems a bit low though. From my own experience, it still takes a bit of effort to drive it down that far
dude... you don't know how much effort I'm putting into it NOT being down that far... Almost always ECO or Normal, A/C turned off, avoiding spirited driving, waiting for traffic to die down, etc, etc, etc.
Old 07-27-17, 03:20 PM
  #24  
LaZeR
Advanced
Thread Starter
 
LaZeR's Avatar
 
Join Date: Jun 2017
Location: from CA to FL
Posts: 638
Received 43 Likes on 37 Posts
Default

Originally Posted by TimboIS
My 11+ year average on the IS350 was 21.6 mpg. You can see the big change in mpg when I moved from the suburbs to the country.
Hey @ TimboIS how do ya export that graph//report you posted? THANKS!!
Old 07-27-17, 03:32 PM
  #25  
TimboIS
Liquid Bra Champion
 
TimboIS's Avatar
 
Join Date: Aug 2005
Location: ƒ(x)
Posts: 2,831
Received 139 Likes on 96 Posts
Default

Originally Posted by LaZeR
Hey @ TimboIS how do ya export that graph//report you posted? THANKS!!
LOL, the car doesn't do that. I log all my fill ups in an app.
Old 07-27-17, 04:03 PM
  #26  
Turismo
Pit Crew
 
Turismo's Avatar
 
Join Date: Jan 2016
Location: TX
Posts: 131
Received 14 Likes on 9 Posts
Default

I was ready to be skeptical, then I saw you're in LA 🤣
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
dlamb89
ES - 1st to 4th Gen (1990-2006)
15
06-07-18 09:52 PM
2XLXTN
IS - 3rd Gen (2014-present)
9
05-16-18 09:36 AM
Chris8152
RC F (2015-present)
29
04-04-16 08:21 PM
KYLESTONES
IS - 3rd Gen (2014-present)
16
11-09-15 02:40 PM
Thule
RX - 2nd Gen (2004-2009)
2
12-29-11 12:00 PM



Quick Reply: Concerned About Fuel Consumption ~ 13 MPG ??



All times are GMT -7. The time now is 08:09 PM.