Last post on Jan 14, 2008 at 3:02 PM
You are in the Lexus IS
What is this discussion about?
Lexus IS 350, Lexus IS 250, Fuel Efficiency (MPG), Sedan
#12 of 41 IS 350 Fuel Economy
May 05, 2006 (8:37 pm)
Hi guys. Is there anyone here who has had the 350 for long enough to give a reasonable description of what kind of fuel economy I could expect from it?
#13 of 41 Re: IS 350 Fuel Economy [rocketguy3]
May 06, 2006 (5:25 pm)
I've had mine for a couple of months now. I'm getting 19.1 MPG with mainly city driving and not being too heavy footed on the gas peddle while I break it in. Thats according to the computer and calculating it myself.
#14 of 41 Re: IS 350 Fuel Economy [truckasaurus]
May 07, 2006 (4:55 pm)
Thanks for the reply.
You're using only premium, right? I hate how unbelievably terrible the EPA estimates are...
#15 of 41 Re: IS 350 Fuel Economy [rocketguy3]
May 07, 2006 (5:40 pm)
Yep, premium only.
#16 of 41 Re: IS 350 Fuel Economy [rocketguy3]
May 07, 2006 (7:21 pm)
In average, I'm getting 24.5 mpg in mostly highway driving. Pretty damn good for a car this powerful!
#17 of 41 Re: IS 350 Fuel Economy [maxidrive]
May 08, 2006 (12:13 am)
Wow, 24.5? That's better than the POS '97 Escort I'm driving right now. Do you think you could quantify what you mean by "mostly" highway driving? Like approximately what percentage?
Thanks for the help.
#18 of 41 Re: IS 350 Fuel Economy [rocketguy3]
May 08, 2006 (10:20 am)
I'd say 75% highway and 25% city. Here are some numbers since I started tracking them...
Miles Gallons Gas Mileage
355.6 13.919 25.5
355.9 14.207 25.1
277.8 11.858 23.4
348.1 14.586 23.9
#19 of 41 Re: IS 350 Fuel Economy [maxidrive]
May 08, 2006 (2:51 pm)
How fast are you driving on the highway?
Are you being gentle with it or making maximum use of all that power every chance you get
#20 of 41 Re: IS 350 Fuel Economy [truckasaurus]
May 09, 2006 (4:25 am)
Mostly 75-80 mph wth occasional bursts of acceleration up to 100 mph. I went to 120 mph just once in an early morning.
#21 of 41 IS 250 AWD mileage vs. IS 350 mileage
May 09, 2006 (11:02 am)
Those mileage numbers sound just about right. In my IS250 AWD, I usually got about 23.7 mpg in an all suburban commute. Since my last fill up, I have been driving very conservatively as if there is an egg under my foot. I've done a lot of coasting, and drive with the A/C off, just to see what I can max out. Doing this, I'm getting 25.9 mpg, an increase of about 10%. I'm trying to see if I can get 400 miles on a single tank of premium. This is definitely better than what I expected before buying the car. My ES 330, with a 21/29 mpg rating, gets an average of 22mpg on the same suburban commute.