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On a trip to Vegas with ac on all the time, lights on, 5 people on board, 2 hours traffic, road fun with M3 (100-120mph) i got 24-5 on trip computer and 26 at the pump.
Driving on freeway 70 my computer shows 28-30.

P.S. I have 255/45/17 so its also gave me less miles per galon.
 
Re: Poor gas mileage (blackTT55)

I get 1200 kms/ tank of gas when doing strictly highway. Engine is 2.5T

The biggest factors I've found affecting mileage on the Volvo Turbo are oil type and exhaust flow.
-Changing to AMSoil Synthetic made the biggest improvement.
-Changing to 2.5" exhaust made another big improvement.
 
Re: (Maynard)

I appologize for offending anyone but stick by what I said. I find that much over 30 is VERY unlikely... 31 maybe if everything is occuring perfectly, but anything over that is total BS. You are getting into civic and hybrid numbers there when you have nearly twice the displacement and twice the horsepower. 31 I dont have much of a problem believing (especially since you ranged it 29-31) but those claiming 30-35 or close to 40... come on guys.

FYI trip computers are notoriously in accurate. If you want true mileage do it the old fashion way and do the math
 
also if we are tlaking NA then I buy those claims of 31 with no problem... turbos I still have a hang up with that
 
Re: (Bender)

Perhaps there is something wrong with your car? Mine gets WAY better milaege than that.
 
only thing wrong with my car is this damn lead foot that seems to always be on it... hehe.

but in reality 24 should be fairly typical in the city and 28 should be fairly typical on the highway... significant deviation and I get suspicious of peoples math.
 
Re: (Bender)

I suppose it may be lower if its all uphill where you live too
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Try changing to a synthetic oil like AMSoil 0W30 and I bet you'd see at least a 15% improvment (mine improved 17%). Starts like a charm in the winter too.
 
Well I actually do live in a the northern hills of philadelphia, so I have tons of stop and go always up and down hills...
 
Re: (Bender)

Quote, originally posted by Bender »
I appologize for offending anyone but stick by what I said. I find that much over 30 is VERY unlikely... 31 maybe if everything is occuring perfectly, but anything over that is total BS. You are getting into civic and hybrid numbers there when you have nearly twice the displacement and twice the horsepower. 31 I dont have much of a problem believing (especially since you ranged it 29-31) but those claiming 30-35 or close to 40... come on guys.

FYI trip computers are notoriously in accurate. If you want true mileage do it the old fashion way and do the math

My wife pulled 35mpg behind the UHaul (not drafting) at 65mph from S.Florida to Houston. I was impressed. You can be skeptical all you want, but it doesn't change the facts. If you drive with a VERY light foot on acceleration, you can pull 3-5mpg higher in the city.
 
Re: (Bender)

Quote, originally posted by Bender »
getting over 30 on these cars is total BS... anyone that says otherwise is a liar
WOW, so now I'm a liar bc I get better gas mileage than someone else?? WTF??? How is this impossible??? I AVERAGED 32 mpg driving from St. Louis to KC last summer in my '02 S60 T5 Automatic with the CC on at 75mph. Why is this so hard to believe? I routinely can average `35mpg at 70mph with the cruise set.

3 things: 1) TT55-you live in CA, I'm guessing there are a lot of hills that affect your mpg 2) I LIVE IN KANSAS 3) BENDER...EMAWAS- I don't appreciate being called a liar, it's not like I claimed 40+ mpg, that is a bit on the high side. You certainly cannot say 30mpg is BS, considering geography, altitude, tire pressure, load, speed, CC, and transmission factors.
 
Discussion starter · #31 ·
Re: (Cornfed)

I don't mean to offend anyone either but when you are claiming 35 mpg on a T5 auto it is very, very difficult to believe. You are going into Honda Civic and Toyota Corolla territoty. Heck, even the new 4 cylinder camry does not claim those numbers.

btw, I just reset my trip computer and the new mpg avg is now 25.1
 
wow everyone is so damn sensitive... why is it a big deal if some dude on the internet doesnt believe your gas mileage of all things...

i was actually just about to mention all the other variables that geography brings about

I appologized before and I will appologize again. I didn't realize this was such as a contentious issue and that people would take such offense to some dude they dont even know making an outrageous claim and generalization. Didnt realize that my liar comment would strike right to your cores.

Note to self- things to not talk about with friends:
Politics
Religion
Gas Mileage
 
Discussion starter · #33 ·
Re: (Cornfed)

Quote, originally posted by Cornfed »

WTF??? How is this impossible???3 things: 1) TT55-you live in CA, I'm guessing there are a lot of hills that affect your mpg
This is true, lots of hills and traffic but I still say 35 mpg is exaggerating
 
Re: (Bender)

Quote, originally posted by Bender »
wow everyone is so damn sensitive. why is it a big deal if some dude on the internet doesnt believe your gas mileage of all things. i was actually just about to mention all the other variables that geography brings about. I apologized before and I will apologize again. I didn't realize this was such as a contentious issue and that people would take such offense to some dude they dont even know making an outrageous claim and generalization. Didn't realize that my liar comment would strike right to your cores. Note to self, things to not talk about with friends: Politics, Religion, Gas Mileage
All I know is that if I stay in the right hand lane with the CC on 65, the AC off and the windows rolled up, I can get 40mpg for a good stretch of I5 from Bham to Seattle. Believe it or not. By the way, gas mileage is quickly becoming synonymous with politics and religion. Just ask the good ol' Bush Administration...
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Re: (darylkaiser30)

Quote, originally posted by darylkaiser30 »
... I can get 40mpg for a good stretch of ...

By any chance, are you quoting the instaneous mpg reading or average mpg over a reasonably long drive? This could explain the difference between your quoted numbers and others.

FWIW, my wife regularly gets about 23-24 mpg on the highway on her S60.
 
Discussion starter · #37 ·
Re: (ig_mb)

Quote, originally posted by ig_mb »


By any chance, are you quoting the instaneous mpg reading or average mpg over a reasonably long drive? This could explain the difference between your quoted numbers and others.
I think that might be it.. I get a reading of 40+mpg on the instaneous reading but only 25.1mpg on the mpg average reading.
 
oh!

in that case you can put it in neutral and coast down a hill and get nearly a 99+ reading. The only way to get true general mileage is fill it up, clear the trip odometer, then divide the trip odometer by the number of gallons on the next fill up
 
Discussion starter · #39 ·
Re: (Bender)

Quote, originally posted by Bender »
oh!

in that case you can put it in neutral and coast down a hill and get nearly a 99+ reading. The only way to get true general mileage is fill it up, clear the trip odometer, then divide the trip odometer by the number of gallons on the next fill up
I was actually directing my comment at darlkaiser30 for his claim on the ridiculous high mpg that he's getting (or so he claims). I think either he's reading the instaneous avg. or it's bull****. Anyways, I agree with you in that the proper way of measuring your mpg is to fill-up, reset your trip comp. and drive until empty.
 
Re: (blackTT55)

I totally believe the 30+ mpg numbers. The day my mother-in-law died, I tanked up at the Burbank Costco and drove to Palm Springs with cruise control set at 68, A/C off. Only had to drop out of cruse-control three times. (Had OEM Michelin MXM-4 tires set at max recommended inflation of 38 psi. ) Trip average was 33.5 mpg.

Remember that the ECU is running the boost near maximum psi during highway cruise but they back off on fuel flow and spark timing to prevent pre-ignition, That way the boost is up when you romp on it so all the ECU has to do is advance fuel flow and spark timing and you get near-instantaneous response with little turbo-lag. the advantage is that the high boost keeps torque high (i.e., lowers rpm) at cruise at 65 mph so the efficiency really is nearly that of a 2.3l 4-banger.

One thing I noticed, though was that tires can make a difference. my wife's S80 dropped a couple mpg when we went to the Eagle F1-GS-D3's Great tire, very sticky, but performance comes at a price in mpg. I just put on some Michelin Exalto A/S on the S60 (215-55-16) and mileage is about 1/2 mpg or so worse than the MXM4's.

But if you have a lead foot, your mileage goes out the window. If you drive the car right, you'll get good mpg. It's your choice. Try it one night--take a road trip to nowhere on a flat stretch at 1 AM when the traffic is light. Set the cruise control, leave the A/C off, and see what you get.
 
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