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

2IS MPG Threads (MERGED master thread)

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Old 04-30-08, 08:15 PM
  #166  
ssmoked
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I typically shift around 3250rpm (if any less I experience jerks), the car has 3200 miles and I usually go around town 55-60 at 6th. I am not going to lie, I do red line or get close to it a couple times every trip. But my point is, the car has 204 horses and it SHOULD get around 20+ city. Compared to other cars in the same class (A4 20 city) or MT cars that has much more hp (350z, 18mpg city or IS350), the 250 MT seems not too efficient Could the 250 be running too rich? Any way to reduce the fuel injection?
Old 04-30-08, 08:21 PM
  #167  
DLam
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i have the 2506mt also but i get around 23mpg city driving
Old 04-30-08, 08:31 PM
  #168  
ssmoked
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Originally Posted by DLam
i have the 2506mt also but i get around 23mpg city driving
ok whats your secret? did you unplug 2 cylinders??
Old 04-30-08, 09:04 PM
  #169  
fasteddy91
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I really want to know too. I was planning on buying the is250 with 6spd manual but decided to buy the is350 which pretty much has the same EPA ratings. I get around 19-20 mpg, 95% spirited city driving.

Last edited by fasteddy91; 04-30-08 at 09:13 PM.
Old 04-30-08, 09:13 PM
  #170  
DLam
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Originally Posted by ssmoked
ok whats your secret? did you unplug 2 cylinders??
haha lets see i shift at about 3k ummmm i got no secrets how aggressive is your driving?
Old 04-30-08, 09:23 PM
  #171  
jackblack7
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Originally Posted by ssmoked
ok whats your secret? did you unplug 2 cylinders??
You seriously wonder why you get bad fuel efficiency?

Originally Posted by ssmoked
I am not going to lie, I do red line or get close to it a couple times every trip.
Old 04-30-08, 09:27 PM
  #172  
eric_r_ho
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I drive the same way w/ my auto250 and I get about 25mpg per tank highway+local driving and I haul *** quite a lot..mainly because its just too slow w/out giving it adequate throttle..
Old 04-30-08, 10:22 PM
  #173  
ULTiMaX99
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i think with all the sophisticated technology in our cars, the computer can optimize fuel efficiency better in an auto than a human can in a manual. i noticed the same thing in the tsx too...
Old 04-30-08, 10:35 PM
  #174  
wilwilB
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we use L/100km here. mine is @ 10.9L/100km, can someone tell me is it good or not?
Old 04-30-08, 10:41 PM
  #175  
haze
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5k on the MT, i get 24mpg in stop and go traffic in LA... Dont know how the hell you guys are driving. I shift at about 2500-3000rpms
Old 04-30-08, 10:45 PM
  #176  
IS250_6Spd
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Well i get around 20 city. Highest redline i experienced was 5500k maybe once every 2 or so weeks. I shift around 3k.
Old 04-30-08, 11:14 PM
  #177  
Rividsoul
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Hmm, I do 10.1L/100km or 23.26 mpg here in Van all city driving. It's quite hilly tho. I shift at around 3000rpm 1st gear & 2nd gear then pop it in 6 to cruise.
Old 04-30-08, 11:40 PM
  #178  
fasteddy91
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sounds like the 18mpg in the city is incorrect, so far it sounds like 21-23mpg is the norm if you drive it normally. So far the 18mpg EPA rating in the city for the is350 is pretty accurate or close to it under normal conditions. I average 18-19.5 mpg under all city driving. If this is the case, I would of bought the is250 6 spd manual. Oh well, now I'm stuck with an extra 102 horsepower
Old 04-30-08, 11:57 PM
  #179  
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Old 05-01-08, 12:48 AM
  #180  
IS250HuNnY
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Originally Posted by Rividsoul
Hmm, I do 10.1L/100km or 23.26 mpg here in Van all city driving. It's quite hilly tho. I shift at around 3000rpm 1st gear & 2nd gear then pop it in 6 to cruise.
yeah me too i pop it in 6th when im just cruisin and theres no red lights and shift at around 3000-3200 rpms i think.. i dont really know exactly cuz i dont pay attention to it that much anymore


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