Why is the E9X M3 so bad on gas?

Thik · 04-14-2013, 07:26 PM

Just to compare against over European naturally aspirated V8's:

M3: 4.0L 414hp 3,700 lbs. 14/20 MPG
Maserati Gran Turismo: 4.7L 454hp 4,145lbs 13/21 MPG
Audi RS5: 4.2L 450 hp 4,009 lbs. 16/23 MPG
Panamera S: 4.8L 400hp 3,968 lbs. 16/24 MPG
Jaguar XK: 4.2L 450hp 4,009 lbs. 16/23 MPG
R8: 4.2L 430hp 3,968lbs. 16/24 MPG
Range Rover: 5.0L 375hp 4,850 lbs. 14/20 MPG

Thoughts?

PhillyNate · 04-14-2013, 07:35 PM

Well, 8 individual throttle bodies and an 8,400 rpm redline would be my extremely unprofessional guess. I actually think the highway figure is underrated IMO.

zamboni · 04-14-2013, 07:38 PM

Not an engineer can never figured this one out why the mileage is so low?

325rider · 04-14-2013, 07:39 PM

Not an engineer can never figured this one out why the mileage is so low?

Ezio · 04-14-2013, 07:41 PM

A smaller engine works harder..... to produce high power.

duk · 04-14-2013, 07:49 PM

i got 22mpg on a 2hr roadtrip, it's not that bad

DevJ · 04-14-2013, 07:52 PM

i think it has to do with gear ratios (for highway MPGs)..i'm not an expert though and don't really know.

ruff1017 · 04-14-2013, 07:53 PM

E9X M3 is bad on gas

NA V8 8,400 reline rpm
High gear ratio

because it is compromised for fun driving.

ms372 · 04-14-2013, 07:59 PM

Quote:

Originally Posted by DevJ

i think it has to do with gear ratios (for highway MPGs)..i'm not an expert though and don't really know.

+1

Longboarder · 04-14-2013, 08:02 PM

Gearing is numerically high compared to other cars.

Upshift at 2,000 RPM (instead of 3,000 or 4,000) and you will see much better mileage.

1MOREMOD · 04-14-2013, 08:07 PM

because the s65 doesnt let you get out of the throttle. once you take it deep to 8K land you want to every shift.

serranot · 04-14-2013, 09:30 PM

Quote:

Originally Posted by ruff1017

E9X M3 is bad on gas

NA V8 8,400 reline rpm
High gear ratio

because it is compromised for fun driving.

+1. All things considered, there's a lot of mechanical drag on an engine turning 3000 RPM at 70 compared to, say, a Corvette turning about 1500.

Those revs are awesome, but they hurt economy.

mdosu · 04-14-2013, 09:32 PM

Gearing

dreamspeed · 04-14-2013, 11:05 PM

I assume it is the very aggressive gearing.

High revving and "small motor" aren't really good "excuses" IMHO.

Just look at all the high revving small Honda VTEC motors

zeeman335 · 04-15-2013, 12:12 AM

After driving my moms 2007 camry 4 banger which sits 2300k rpms, the M3 at 80mph , it's sitting at 3k rpms. wth? Why is that??I thought the M3 would be at like 2-2.5k rpms at 80mph in 7th gear.

Rk-d · 04-15-2013, 12:26 AM

Quote:

Originally Posted by 1MOREMOD

because the s65 doesnt let you get out of the throttle. once you take it deep to 8K land you want to every shift.

There's some truth there. I'm incapable of nursing this engine.

Cortexiphan · 04-15-2013, 12:29 AM

Quote:

Originally Posted by zeeman335

After driving my moms 2007 camry 4 banger which sits 2300k rpms, the M3 at 80mph , it's sitting at 3k rpms. wth? Why is that??I thought the M3 would be at like 2-2.5k rpms at 80mph in 7th gear.

Quiet simple: because M3 can rev up to 8300 rpm. If it did 80 mph at 2k rpm it would have to reach 250 miles at redline

lol

xcharlesy · 04-15-2013, 12:29 AM

compare the c63, and other direct competitors, most of those are way out of price range and other factors

pkimM3r · 04-15-2013, 12:38 AM

Mpg?! Really?! Although i was surprised i actualy got 20mpg on a drive down to laguna beach from los angeles. Thats pretty good i say.

bmwe92fan · 04-15-2013, 06:09 AM

All answers logical - how we drive, gearing, etc...

The truth is that the car is designed to be DRIVEN hard and not for MPG - yes it is a consideration but the truth is an M car is for a special driver - and I'm just thankful I get double digits with how I drive mine!

VMcV3y · 04-15-2013, 08:16 AM

The M3 achieves better mileage than the Toyota Prius:

Proof:

DETAILS BEGIN AT 3 min : 25 seconds

- V

.

aus · 04-15-2013, 09:17 AM

You guys are missing the main reason. Direct injection. Gearing has something to do with it too, obviously. A seventh gear would help too, ie Porsche, which also has DI.

.

04-14-2013, 07:26 PM	#1
Thik First Lieutenant 140 Rep 371 Posts Drives: 2010 Space Grey E92 M3 6spd Join Date: Jan 2013 Location: Toronto iTrader: (0)	Why is the E9X M3 so bad on gas? Just to compare against over European naturally aspirated V8's: M3: 4.0L 414hp 3,700 lbs. 14/20 MPG Maserati Gran Turismo: 4.7L 454hp 4,145lbs 13/21 MPG Audi RS5: 4.2L 450 hp 4,009 lbs. 16/23 MPG Panamera S: 4.8L 400hp 3,968 lbs. 16/24 MPG Jaguar XK: 4.2L 450hp 4,009 lbs. 16/23 MPG R8: 4.2L 430hp 3,968lbs. 16/24 MPG Range Rover: 5.0L 375hp 4,850 lbs. 14/20 MPG Thoughts?
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04-14-2013, 07:35 PM	#2
PhillyNate ENTHUSIAST 135 Rep 2,097 Posts Drives: 2010 Porsche Cayman Join Date: Apr 2011 Location: Philadelphia iTrader: (0) Garage List 2010 Porsche Cayman [0.00]	Well, 8 individual throttle bodies and an 8,400 rpm redline would be my extremely unprofessional guess. I actually think the highway figure is underrated IMO. __________________ "what I'm driving here...is an ending." Jeremy Clarkson 2010 Carrara White Porsche Cayman 6mt 2014 Whiteout Toyota GT-86 6mt(Sold 05/23/15) 2011 Alpine White BMW M3 6mt ZCP Coupe(forced retirement 06/06/14) 2008 Alpine White BMW 328i 6mt Coupe(retired 06/21/11)
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04-14-2013, 07:38 PM	#3
zamboni I want to drive a Zamboni 1129 Rep 5,557 Posts Drives: 13 E93 M3 18 F80 M3 16 K71 Join Date: Mar 2006 Location: Monte Sereno, CA iTrader: (7) Garage List 16 K71 F800GT [10.00] 2018 F80 M3 [10.00] 2013 BMW E93 M3 [10.00]	Not an engineer can never figured this one out why the mileage is so low? __________________ 18 F80 Imola Red 6MT 16 K71 F800GT Montego Blue 13 E93 M3 Melbourne Red 2000 E46,2006 E90,09 E82,13 E93 328i,14 F30 335i,18 F80 M3 My next vehicle would be a Zamboni
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04-14-2013, 07:39 PM	#4
325rider Captain 36 Rep 826 Posts Drives: '11 e90 M3 6mt Join Date: Aug 2010 Location: Miami, Fl iTrader: (1)	Not an engineer can never figured this one out why the mileage is so low?
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04-14-2013, 07:41 PM	#5
Ezio Brigadier General 380 Rep 3,934 Posts Drives: 2023 Alfa Romeo, 2023 m240i Join Date: Nov 2012 Location: MI iTrader: (0)	A smaller engine works harder..... to produce high power.
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04-14-2013, 07:49 PM	#6
duk ///M 158 Rep 3,195 Posts Drives: 2011 AW/FR 6MT E92 Join Date: Jun 2007 Location: Irvine, CA iTrader: (0)	i got 22mpg on a 2hr roadtrip, it's not that bad __________________ 2011.5 AW/FR E92 M3 6MT
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04-14-2013, 07:52 PM	#7
DevJ Colonel 154 Rep 2,736 Posts Drives: R8 V10+/YMB M4 Join Date: Nov 2007 Location: Tulsa, OK iTrader: (1)	i think it has to do with gear ratios (for highway MPGs)..i'm not an expert though and don't really know. __________________ ‘23 RRS First Edition '22 X7 M50i '18 R8 V10+ http://www.bimmerpost.com/forums/attachment.php?attachmentid=133578&d=1204654487[/IMG]
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04-14-2013, 07:53 PM	#8
ruff1017 Private First Class 27 Rep 113 Posts Drives: 09 M3 6speed Join Date: Sep 2009 Location: Toronto iTrader: (0)	E9X M3 is bad on gas NA V8 8,400 reline rpm High gear ratio because it is compromised for fun driving.
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04-14-2013, 08:02 PM	#10
Longboarder Major General 3431 Rep 6,771 Posts Drives: 2016 BMW i8 Join Date: Dec 2006 Location: Monarch Beach iTrader: (1) Garage List 2012 BMW e92 M3 [0.00] 2021 BMW X5M [10.00] 2015 Porsche 991 Tu ... [10.00] 2015 Porsche 991 GT3 [10.00]	Gearing is numerically high compared to other cars. Upshift at 2,000 RPM (instead of 3,000 or 4,000) and you will see much better mileage. __________________ Current BMWs: 2022 X5 40i, 2016 X5 50i 2015 Porsche 991 Turbo S 1979 Porsche 911 Turbo (930) a couple others IG: longboarder949; YouTube: https://www.youtube.com/channel/UCT1...eoFBszPIK0gf9w
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04-14-2013, 08:07 PM	#11
1MOREMOD - 11817 Rep 23,187 Posts Drives: Race car-> Join Date: Mar 2009 Location: check your mirrors iTrader: (5)	because the s65 doesnt let you get out of the throttle. once you take it deep to 8K land you want to every shift. __________________ 02 Tiag e46 M3\|6MT\|GC plates\|MCS c.o.\|GC bars\|GC race control arms\|GC bushings\|BW eng. & tran. mounts\|subframe kit\|BW race shifter\|BW Jaffster\|Euro header\|BW exhaust\|K&N c.a.i.\|Epic race tune\|Rouge pulleys\|Seibon CF hood\|CSL bumper\|apr gt 250 & splitter\|ST-40\|XR-2\|SS lines\|half cage\|Recaro profi\|Profi 2 harness\|BMWpedals\|BW studs\|
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04-14-2013, 09:32 PM	#13
mdosu Banned 314 Rep 8,496 Posts Drives: Double Vanos'd Civic-M3 Join Date: Oct 2009 Location: San Francisco iTrader: (6)	Gearing
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04-14-2013, 11:05 PM	#14
dreamspeed Lieutenant Colonel 261 Rep 1,616 Posts Drives: 6MT Join Date: Jul 2012 Location: Los Angeles iTrader: (0)	I assume it is the very aggressive gearing. High revving and "small motor" aren't really good "excuses" IMHO. Just look at all the high revving small Honda VTEC motors __________________
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04-15-2013, 12:12 AM	#15
zeeman335 Captain 84 Rep 712 Posts Drives: 2001 M3 Join Date: Nov 2008 Location: Massachusetts iTrader: (8)	After driving my moms 2007 camry 4 banger which sits 2300k rpms, the M3 at 80mph , it's sitting at 3k rpms. wth? Why is that??I thought the M3 would be at like 2-2.5k rpms at 80mph in 7th gear.
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04-15-2013, 12:29 AM	#18
xcharlesy Banned 12 Rep 268 Posts Drives: e92 M3 Join Date: Aug 2012 Location: Virginia iTrader: (1)	compare the c63, and other direct competitors, most of those are way out of price range and other factors
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04-15-2013, 12:38 AM	#19
pkimM3r Banned 205 Rep 7,298 Posts Drives: m3 saloon in granny mode. Join Date: Dec 2009 Location: lost angeles iTrader: (0)	Mpg?! Really?! Although i was surprised i actualy got 20mpg on a drive down to laguna beach from los angeles. Thats pretty good i say.
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04-15-2013, 06:09 AM	#20
bmwe92fan Ex GF's: E60 M5, E65, E63, E53, E46 M3, E39 0 Rep 83 Posts Drives: E92 M3 Join Date: Mar 2012 Location: NY iTrader: (0)	All answers logical - how we drive, gearing, etc... The truth is that the car is designed to be DRIVEN hard and not for MPG - yes it is a consideration but the truth is an M car is for a special driver - and I'm just thankful I get double digits with how I drive mine!
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04-15-2013, 08:16 AM	#21
VMcV3y Major 153 Rep 1,052 Posts Drives: 2022 X3MC; 2012 M3 Cabriolet Join Date: Feb 2012 Location: Austin, Texas, USA iTrader: (0) Garage List 2022 X3M Competition [0.00] 2012 M3 Cabriolet [10.00]	The M3 achieves better mileage than the Toyota Prius: Proof: DETAILS BEGIN AT 3 min : 25 seconds - V . __________________ 2022 ///X3M Competition; São Paulo Yellow 2012 ///M3 Cabriolet; Le Mans Blue Metallic. >177k miles and still rocks!
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04-15-2013, 09:17 AM	#22
aus Major General 892 Rep 9,032 Posts Drives: Odysse Join Date: Jul 2005 Location: Seal Beach, CA iTrader: (10)	You guys are missing the main reason. Direct injection. Gearing has something to do with it too, obviously. A seventh gear would help too, ie Porsche, which also has DI. . __________________ Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."
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