Bad MPG is350 f sport
#226
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
UPDATE: after a full 1,519 miles without resetting the computer mpg calculations, it is exactly the same as my manual calculations (I use fuelly). 22.7MPG with 38 miles of freeway and 4 miles of streets each way to work every day. No real rush hour, steady moving on the freeway between 55-75 depending on traffic flow.
#227
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
I just got the is350 fsport with an exhaust doing 11 mpg the exhaust cant impact it that much can it? Car currently has 600 miles and i read in here that theres a breakin of 3k miles for better efficiency? Can anyone confirm
#228
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
I got mine in Dec. First tank of gas 18 avg. Second 18.9, Third 19.4. I have just under 1000 on the clock. Dealer and many others said it improves after a few fillups till it gets steady around 22. I'll buy that as mine seems to be following suit. No mods other than F sport drop-in filter.
#229
Driver School Candidate
Join Date: Dec 2015
Location: MD
Posts: 6
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
I have a '16 IS300 and am about 50/50 highway/street and after numerous fills now over 1,200 mi I'm still squeezing by with about 18mpg driving eco 24/7. It's the one aspect of the car I haven't been satisfied with. I'm stunned to see those with 350s getting 20+. My best tank was 20.5 mpg but that was 75% highway so I'm not sure whats been going on.
#230
Lexus Test Driver
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
Originally Posted by dman51
I have a '16 IS300 and am about 50/50 highway/street and after numerous fills now over 1,200 mi I'm still squeezing by with about 18mpg driving eco 24/7. It's the one aspect of the car I haven't been satisfied with. I'm stunned to see those with 350s getting 20+. My best tank was 20.5 mpg but that was 75% highway so I'm not sure whats been going on.
![Big Grin](https://www.clublexus.com/forums/images/smilies/biggrin.gif)
#231
Driver School Candidate
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
I go a short distance daily without a chance to warm up, pretty much 5-8 minutes of stop and go traffic and park. Most days pretty lenient on the gas but still average 12.5 unless I go around town more then the average might go as high as 13.5. No performance mods, stock.
#232
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
that really just sucks, an M5 or S63 AMG probably gets better gas mileage. might as well drive those cars, LOL
#233
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
Im on the same boat only mod i have is an exhaust and i manually calculated it and its averaging 11 mpg this is horrible mpg
#234
Lexus Test Driver
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
2016 is350 fsport..
I filled it 3 times so far.
1st time, drove off dealership. I got about 15-16mpg
2nd time, self filled. I got about 18-20mpg.
3rd time, which was yesterday. Im getting like 22-23 mpg.
I drive pretty conservative, I go in eco on freeways, normal/sport on streets.
But a full tank says the range is ~300miles.. is that normal?
I filled it 3 times so far.
1st time, drove off dealership. I got about 15-16mpg
2nd time, self filled. I got about 18-20mpg.
3rd time, which was yesterday. Im getting like 22-23 mpg.
I drive pretty conservative, I go in eco on freeways, normal/sport on streets.
But a full tank says the range is ~300miles.. is that normal?
#235
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
2016 is350 fsport..
I filled it 3 times so far.
1st time, drove off dealership. I got about 15-16mpg
2nd time, self filled. I got about 18-20mpg.
3rd time, which was yesterday. Im getting like 22-23 mpg.
I drive pretty conservative, I go in eco on freeways, normal/sport on streets.
But a full tank says the range is ~300miles.. is that normal?
I filled it 3 times so far.
1st time, drove off dealership. I got about 15-16mpg
2nd time, self filled. I got about 18-20mpg.
3rd time, which was yesterday. Im getting like 22-23 mpg.
I drive pretty conservative, I go in eco on freeways, normal/sport on streets.
But a full tank says the range is ~300miles.. is that normal?
#236
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
Damn, y'all IS350 F-Sports is getting the same gas mileage as my ISF. I average about 275 miles on a full tank which contains 14 gallons. 275 miles / 14 gallons = 19.65 MPG.
#237
Lexus Test Driver
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
My car is still new.. less than 500 miles. I'm getting a combined of 22-23 MPG right now. Hopefully it will get better in the future.
#238
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
I get 19-20 mpg/street on 14 is350 f sport. My average mileage is set at 19.5 with 3000 miles of only street driving on all mode.
I have gotten as high as 30 on highway driving, but it was short period of time so it may not be precise.
I have gotten as high as 30 on highway driving, but it was short period of time so it may not be precise.
#239
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
On average, I get 22-23 mpg in my 2015 IS350 AWD with 60 highway/40 city. On the highway with my winter tires, I managed to get a high of 33 mpg. My city only mileage is around 19 mpg. I'm not sure why there are so many people in this thread getting bad mileage; my mileage has been about the same since I got the car from the factory (no real break-in period for fuel economy).
#240
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
Overall average 22-24 mpg (mostly Eco/occasionally Sport+). I track gas mileage with Fuelly.
Driving aggressively it'll dip to around 17-19 mpg (Sport+). Trackdays are around 8-10 mpg. Highway road trips 26-27 mpg. 8 spd IS350 F Sport RWD running 93 octane and performance tires.
Driving aggressively it'll dip to around 17-19 mpg (Sport+). Trackdays are around 8-10 mpg. Highway road trips 26-27 mpg. 8 spd IS350 F Sport RWD running 93 octane and performance tires.
Last edited by ExSrAaron; 02-10-16 at 10:53 AM.