IS - 2nd Gen (2006-2013) Discussion about the 2006+ model IS models

real world MPG at 70mph and/or 75mph - 250 vs 350

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Old 03-07-13, 03:26 PM
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Rickyp521
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2011 IS 250 F-sport

@70mph 36-38MPG
@75mph 33-34MPG

Thats cruising all the way for 265 miles full tank from start and have about little less than 3 quarters of gas left. going from Gastonia, NC to Greenville, NC
Old 03-07-13, 03:27 PM
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Rickyp521
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Also my range is 450-455 miles
Old 03-07-13, 03:54 PM
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Nikon
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anybody know the mpg at only 60mph?
Old 03-07-13, 04:36 PM
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jhumbo
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It seems the 250 gets maybe 4 mpg better on the highway. I wonder how much AWD affects highway MPG. I should have asked for that info as well. What do you all think? Maybe a 1mpg hit for AWD?
Old 03-08-13, 01:30 PM
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KillaIS250
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Originally Posted by jhumbo
It seems the 250 gets maybe 4 mpg better on the highway. I wonder how much AWD affects highway MPG. I should have asked for that info as well. What do you all think? Maybe a 1mpg hit for AWD?
I'd say more like a 2-4 mpg hit from what i've seen on the forums.

Seems like 250 AWD owners get low 20s in the city (some have said they can't even get that) and around 27-28 on the highway.
Old 03-08-13, 01:52 PM
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Sango
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Originally Posted by KillaIS250
I'd say more like a 2-4 mpg hit from what i've seen on the forums.

Seems like 250 AWD owners get low 20s in the city (some have said they can't even get that) and around 27-28 on the highway.
Yes, that's about right. It would be slightly worse if you factor in winter blend fuel.
Old 03-08-13, 04:03 PM
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iRock
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2011 IS350 28mpg all freeway 70mph
Old 03-09-13, 10:48 AM
  #23  
bob4256
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Originally Posted by Nikon
anybody know the mpg at only 60mph?
Look at my earlier post.

~I got 32mpg while dropped on 20s
Old 03-09-13, 02:53 PM
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Tarrant64
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2011 IS350 AWD

I don't think 70-75mph is meaningful really in those results. But I'll just break down realistically what I get.

60-75mph - if taking a longer trip, 100-300 miles - 24-26mpg.
0-60mph everywhere else - 19-22mg.

This has been during the winter months. I can usually push 340 miles before I start to see less than 20 miles on my range, which for me is fine. If fuel economy is a concern, the IS250 is really better. I know people post some reasonably high numbers in mpg for the IS350 but keep in mind on the highway while the gap may close if you're in the city you're going to see a larger difference.

I always say though if you can't afford to put gas in the car you drive you probably shouldn't have it. I have a friend who bought a 5.0 Mustang and couldn't afford the gas. 6-months later ended up getting rid of it. Don't be one of those guys.
Old 03-10-13, 09:11 PM
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Nikon
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Originally Posted by bob4256
Look at my earlier post.

~I got 32mpg while dropped on 20s
how are you getting better mileage than everyone else while on larger, heavier wheels?
Old 03-10-13, 10:30 PM
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Dylan19
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I just did a 300 mile trip from Chicago to Davenport, IA and back and averaged 24.5 with cruise control set at 75 for the entire trip. This was on winter tires in 37 degree weather.
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