For those that have them, whats the MPG? - Page 9 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Chauntalei · 06-17-2012, 04:05 PM

I wish I had 93 around me, best I can get here short of 100+ race fuel is 91. =/

csaba · 06-17-2012, 04:06 PM

Quote:

Originally Posted by Jayde

Highest I've seen was 93.

Ok let me fly over and check lol

smbrm · 06-17-2012, 04:12 PM

RON = Research Octane Number
MON = Motor Octane Number
AKI = Antiknock index = (RON+MON)/2

The balance between RON & MON is actually set by the appreciation of the fleet(all cars in use) pool requirement. As new engine designs enter the market they are evaluated to determine their requirements and influence on the gasoline standards. So generally that says that today, unleaded cars appreciate a fuel that has a 50/50 balance of RON & MON.

In leaded fuel days the appreciation was weighted to (RON+3xMON)/4

Regardless of whether it is regular premium or midgrade, the refineries now tend to blend standard readily available fuels to the AKI standard of (RON+MON)/2.

In North America we tend to sell our fuels described by AKI. While in Europe they tend to sell described by RON, however the AKI relationships still apply.

These are characteristics of the fuel.

Engines also have an octane requirement in terms of both RON & MON which is usually less than the recommended fuel in order that the recommended fuel will satisfy. However as miles are accumulated that octane requirement can rise slightly and historically stabilized after 25000-35000 miles. That is why sometimes vehicles that use regular when new have been known to appreciate mid-grade later.

Knock sensors do influence the impact of the octane used as they can adjust timing within a specified range to cope with AKI of the fuel relative to the octane requirement of the engine.

Since 91 AKI appears to be the maximum in some locations I would be surprised if SCION did not take that seriously in the calibration of the engine for the North American market. Afterall, I am sure they wouldn't want to have deal with a lot of disatisfaction on this subject.

WRXGuy1 · 06-17-2012, 04:56 PM

Filled up for the third time, now I'm getting an average of 33MPG!

OrbitalEllipses · 06-17-2012, 08:14 PM

Quote:

Originally Posted by civicdrivr

On very rare occasions Ive come across 94 octane. Even more rare is finding gas with zero ethanol. I wish I had a local station without that crap, there was a good 2-3mpg improvement running non-ethanol fuel over 10% ethanol in my other car.

Definitely seen 94 before. I've been looking for an ethanol free gas station around here, but I think I simply live too deep into the suburbs/city to find a nice mom and pop place like that.

civicdrivr · 06-17-2012, 08:47 PM

Quote:

Originally Posted by OrbitalEllipses

Definitely seen 94 before. I've been looking for an ethanol free gas station around here, but I think I simply live too deep into the suburbs/city to find a nice mom and pop place like that.

Yea, the last ethanol free station Ive seen was in NC near the Dragon.

GMU-BRZ · 06-17-2012, 09:20 PM

Last tank I got 31.77mpg, really solid considering that was only 250-500 miles on the car, it was not exactly easy highway miles (I was playing with it a bit), and 100+ miles of that was going around 40mph up and down mountains on Skyline drive. Not optimal fuel economy driving situations. This is in a MT too. I was really surprised and happy when I saw that. Both fill ups I've had have been with about a quarter tank left, and the cost has been less than $30 for each.

ToxicSneakers · 06-17-2012, 09:35 PM

27.7 mpg calculated for FR-S: 350 Miles all 93 10% ethanol, about 50:50 city:highway driving with moderation but I'm no candy ass either: Mostly u/4k with a few 6k 2-3 on-ramp bursts.

34.5 MPG 650 miles about half-time sport/city.

Deslock · 06-26-2012, 07:28 AM

BRZ Limited 6MT:

Tank 1: 24.9 MPG, 234 miles
Tank 2: 29.9 MPG, 325 miles (65 highway)
Tank 3: 30.0 MPG, 372 miles (140 highway)

Driving cycle:

Mostly short trips (2-10 miles)
Hilly rural and small town roads, some stop lights, moderate traffic
No highway miles unless specified otherwise
Owners manual break-in procedures followed
A/C left on auto

Notes:

The MPG above was calculated since the multi-info-display's average MPG seems to read ~5% higher than actual MPG.
The inside back cover of the owners manual wrongly states that fuel capacity is 14.5 gal (it's 13.2, as correctly stated on pages 411 and 484).
Page 365 of the owners manual states the low fuel warning light comes on with 1.8 gal left, but I drove 60 miles @ ~32 MPG with it on steady before fueling. It took 12.39 gal, which means either I didn't completely fill it or it had closer to 2.7 gal when the light came on.

Zardoman · 06-26-2012, 07:44 PM

24mpg on my last fill up when i checked.
i have the manual

Fugazi · 06-26-2012, 07:51 PM

32 mpg

Rex Irae · 06-26-2012, 08:00 PM

Right around 33.1 MPG at ~2K miles. AT with ~85% highway, ~15% city.

DeepHunta · 06-26-2012, 08:48 PM

Current trip computer says 25mpg avg.

But I mainly do city driving and I've only racked up 550 miles so far. I'm sure once I do long interstate drives, I can be closer to 30 avg.

ssmtsx · 06-26-2012, 08:49 PM

06-17-2012, 04:56 PM	#116
WRXGuy1 Senior Member Join Date: May 2012 Drives: 2013 WRB BRZ Premium 6MT Location: Goffstown, NH Posts: 662 Thanks: 606 Thanked 155 Times in 104 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	Filled up for the third time, now I'm getting an average of 33MPG! __________________ 2013 BRZ Premium WRB MT - Picked up 5/31/12

06-17-2012, 09:35 PM	#120
ToxicSneakers Deleted Join Date: May 2012 Drives: FR-S Location: Minneapolis Posts: 242 Thanks: 106 Thanked 117 Times in 55 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	27.7 mpg calculated for FR-S: 350 Miles all 93 10% ethanol, about 50:50 city:highway driving with moderation but I'm no candy ass either: Mostly u/4k with a few 6k 2-3 on-ramp bursts. 34.5 MPG 650 miles about half-time sport/city. Last edited by ToxicSneakers; 06-26-2012 at 07:48 AM.

06-26-2012, 07:28 AM	#121
Deslock Senior Member Join Date: Oct 2009 Drives: 2013 DZE/01 (sold for MX5 ND1) Location: western MA Posts: 871 Thanks: 265 Thanked 269 Times in 133 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	BRZ Limited 6MT: Tank 1: 24.9 MPG, 234 miles Tank 2: 29.9 MPG, 325 miles (65 highway) Tank 3: 30.0 MPG, 372 miles (140 highway) Driving cycle: Mostly short trips (2-10 miles) Hilly rural and small town roads, some stop lights, moderate traffic No highway miles unless specified otherwise Owners manual break-in procedures followed A/C left on auto Notes: The MPG above was calculated since the multi-info-display's average MPG seems to read ~5% higher than actual MPG. The inside back cover of the owners manual wrongly states that fuel capacity is 14.5 gal (it's 13.2, as correctly stated on pages 411 and 484). Page 365 of the owners manual states the low fuel warning light comes on with 1.8 gal left, but I drove 60 miles @ ~32 MPG with it on steady before fueling. It took 12.39 gal, which means either I didn't completely fill it or it had closer to 2.7 gal when the light came on. __________________ Life's too short for understeer Last edited by Deslock; 07-01-2012 at 06:03 PM.

06-26-2012, 08:48 PM	#125
DeepHunta Senior Member Join Date: Mar 2012 Drives: '05 Outback Wgn, '05 Lotus Elise Location: WA Posts: 543 Thanks: 21 Thanked 99 Times in 67 Posts Mentioned: 11 Post(s) Tagged: 0 Thread(s)	Current trip computer says 25mpg avg. But I mainly do city driving and I've only racked up 550 miles so far. I'm sure once I do long interstate drives, I can be closer to 30 avg. __________________ Proud ex-owner of GBS 6MT BRZ Limited. Pre-ordered on Feb-29-2012, got VIN on 5/19 with ETA 6/6, arrived early on 6/2, but still didn't pick it up until Jun-6-2012. Recently sold the Buuurz as of 4/21/2014

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06-17-2012, 04:12 PM	#115
smbrm Senior Member Join Date: May 2010 Drives: Scion FRS Ht Lva(AT) Location: Alberta Posts: 409 Thanks: 30 Thanked 81 Times in 54 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	RON = Research Octane Number MON = Motor Octane Number AKI = Antiknock index = (RON+MON)/2 The balance between RON & MON is actually set by the appreciation of the fleet(all cars in use) pool requirement. As new engine designs enter the market they are evaluated to determine their requirements and influence on the gasoline standards. So generally that says that today, unleaded cars appreciate a fuel that has a 50/50 balance of RON & MON. In leaded fuel days the appreciation was weighted to (RON+3xMON)/4 Regardless of whether it is regular premium or midgrade, the refineries now tend to blend standard readily available fuels to the AKI standard of (RON+MON)/2. In North America we tend to sell our fuels described by AKI. While in Europe they tend to sell described by RON, however the AKI relationships still apply. These are characteristics of the fuel. Engines also have an octane requirement in terms of both RON & MON which is usually less than the recommended fuel in order that the recommended fuel will satisfy. However as miles are accumulated that octane requirement can rise slightly and historically stabilized after 25000-35000 miles. That is why sometimes vehicles that use regular when new have been known to appreciate mid-grade later. Knock sensors do influence the impact of the octane used as they can adjust timing within a specified range to cope with AKI of the fuel relative to the octane requirement of the engine. Since 91 AKI appears to be the maximum in some locations I would be surprised if SCION did not take that seriously in the calibration of the engine for the North American market. Afterall, I am sure they wouldn't want to have deal with a lot of disatisfaction on this subject.

06-17-2012, 09:20 PM	#119
GMU-BRZ Senior Member Join Date: Feb 2012 Drives: 2013 Subaru Impreza Sport Location: Fairfax, VA Posts: 279 Thanks: 103 Thanked 122 Times in 32 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Last tank I got 31.77mpg, really solid considering that was only 250-500 miles on the car, it was not exactly easy highway miles (I was playing with it a bit), and 100+ miles of that was going around 40mph up and down mountains on Skyline drive. Not optimal fuel economy driving situations. This is in a MT too. I was really surprised and happy when I saw that. Both fill ups I've had have been with about a quarter tank left, and the cost has been less than $30 for each.

06-26-2012, 07:51 PM	#123
Fugazi Member Join Date: Jun 2012 Drives: SWP BRZ 6 Speed Limited #888 Location: Saint Augustine FL USA Posts: 49 Thanks: 2 Thanked 10 Times in 5 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	32 mpg

06-26-2012, 08:00 PM	#124
Rex Irae Junior Member Join Date: Jan 2012 Drives: Eclipse Location: Midwest Posts: 5 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Right around 33.1 MPG at ~2K miles. AT with ~85% highway, ~15% city.

06-26-2012, 08:49 PM	#126
ssmtsx Member Join Date: Jun 2012 Drives: Ultramarine 6MT FR-S Location: Northern VA Posts: 43 Thanks: 9 Thanked 5 Times in 5 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)

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