THE LARGEST BMW 2-SERIES FORUM ON THE PLANET
2Addicts
2Addicts
BMW Garage BMW Meets Register Today's Posts
2Addicts | BMW 2-Series forum BMW 2 Series (F22) Forum BMW 2 Series Coupe and Cabriolet (F22/F23) General Forum How much less fuel efficient is it to shift at 4000 rpm?

Post Reply
 
Thread Tools Search this Thread
      10-11-2018, 09:23 PM   #1
MetalMK
First Lieutenant
Canada
229
Rep
328
Posts

Drives: BMW
Join Date: Dec 2017
Location: Canada

iTrader: (0)

How much less fuel efficient is it to shift at 4000 rpm?

Driving around town, the automatic transmission shifts way too early, keeping the engine under 1500 rpm, although it helps with gas milage, the car feels pretty much gutless because it has to downshift then accelerate. I was wondering if I shift with paddles at between 3000 and 4000 rpm, how much more gas is the car going to consume?
Appreciate 0
      10-12-2018, 04:25 AM   #2
Ron Jeffries
Old Member. Old in general, actually.
388
Rep
889
Posts

Drives: 2018 M240i xDrive convertible
Join Date: Feb 2013
Location: Michigan

iTrader: (0)

Try it for a tank and see, that's my advice. Also sport mode tends to shift higher.

Me my purpose in getting the car wasn't good mileage
Appreciate 1
WolfGTI716.00
      10-12-2018, 07:12 AM   #3
Maynard
Colonel
United_States
3848
Rep
2,873
Posts

Drives: 228iX & M2C
Join Date: Mar 2016
Location: Upstate NY

iTrader: (1)

FWIW, my car really likes driving in the mountains, and as a nice side bonus gets almost best-case mileage there (I typically get >25mpg on the tank through the ADK, usually in the 27 range). This is typically in sport, and paddle shifting well above 3k. By comparison, my few track days it is about 7-9mpg. Either of these could easily be 5 and I'd still consider it a bargain, as you can't put a price on the enjoyment.
Appreciate 0
      10-12-2018, 11:39 AM   #4
XutvJet
Major General
5551
Rep
5,369
Posts

Drives: 2011 Cayman Base, 2016 M235
Join Date: Mar 2016
Location: Kansas City

iTrader: (-1)

There's actually very little MPG to be gained lumbering up to speed and much of the data suggests getting up to cruise speed quickly is actually better on MPGs than slowly accelerating up to speed. Low-rpm and moderate load is actually pretty fuel consuming rather than briskly accelerating through the gears to get up to speed. I say have fun with it as it's not going to be have huge affect on MPG.
__________________
The forest was shrinking, but the Trees kept voting for the Axe, for the Axe was clever and convinced the Trees that because his handle was made of wood, he was one of them.
Appreciate 2
makrop151.00
      10-12-2018, 12:02 PM   #5
Texan2er
Private
United_States
20
Rep
58
Posts

Drives: 2015 M235i
Join Date: Sep 2018
Location: Houston, TX

iTrader: (1)

Quote:
Originally Posted by XutvJet View Post
There's actually very little MPG to be gained lumbering up to speed and much of the data suggests getting up to cruise speed quickly is actually better on MPGs than slowly accelerating up to speed. Low-rpm and moderate load is actually pretty fuel consuming rather than briskly accelerating through the gears to get up to speed. I say have fun with it as it's not going to be have huge affect on MPG.
This.

Only reason I stay under 3k is because the car is warming up. Once oil hits 210F, I usually run out to at least 5k on acceleration, and I've been averaging about 21 mpg in city... But I also periodically partake in *more* spirited acceleration like the hooligan I am.

Last edited by Texan2er; 10-15-2018 at 03:25 PM..
Appreciate 0
      10-12-2018, 01:24 PM   #6
stevenvillatoro
Captain
stevenvillatoro's Avatar
United_States
735
Rep
611
Posts

Drives: ‘18 M240i, Estoril Blue
Join Date: Sep 2017
Location: San Diego, CA

iTrader: (0)

Garage List
2018 BMW M240i  [0.00]
From 2002 to 2018, I was a hardcore hypermiler. It was an obsession that led me to own nothing but emasculated hybrids and one very puny EV. I obsessed over every fraction of a MPG and Kw. Every tankful and charge was documented during those arduous 16 years.

I have NO idea how I got so indoctrinated into that "economy-over-pleasure" phase of automotive austerity. So, when I got this BMW, I resolved to quit the pointless ritual of monitoring my fuel economy... and to rekindle the joy of my prior sports car days.

That decision was liberating. What's the point of having an M240i only to drive it like an accountant? Spending $50K on a fun car, and then worrying about saving $20-40 a month on gas simply doesn't make sense.

To the OP, Sport mode doesn't cause much of fuel ding. Depending on how/where I drive, no more than a 10-20% loss in Sport... not worth the sacrifice. I switch things up between Comfort and Sport. Sometimes 'ya feel like a nut... !
__________________
—Steve

'19 MX-5 Miata GT-S soft top
Past BMWs: two '57 Isetta 300s, '70 1600, '72 Bavaria, '78 320i, '18 M240i
Appreciate 3
WolfGTI716.00
MarkDemma519.00
      10-12-2018, 08:52 PM   #7
Sportstick
Major General
Sportstick's Avatar
4653
Rep
6,029
Posts

Drives: '15 228i and '24 X3 sDrive30i
Join Date: Mar 2014
Location: Southwest USA

iTrader: (0)

Quote:
Originally Posted by stevenvillatoro View Post
That decision was liberating. What's the point of having an M240i only to drive it like an accountant?
About every other year, when I visit my accountant for annual tax prep, he has a new BMW in his parking spot...usually some form of 3 or 4 Series convertible. From our chats, he drives above his station!
__________________
2015 228i 6MT/Track Handling/Tech/Cold/Premium/Lighting/Driver Assistance/KCDesign Strut Brace/M2 LCAs/Rogue SSK/BBS SR/PS4S/ER Chargepipe/AA Intercooler/Dinan Shockware/MPerformance Spoiler/Black Grilles/Xpel Ultimate PPF & Prime XR+ Tint/Adam's Ceramic/no CDV
2024 X3 sDrive30i/MSport/Premium/Dynamic Handling/Shadowline/Parking/Xpel Prime XR Plus/Weathertech Cargo Liner
Appreciate 0
      10-12-2018, 09:30 PM   #8
CE750Jockey
First Lieutenant
CE750Jockey's Avatar
77
Rep
369
Posts

Drives: '19 M240 'vert 6MT
Join Date: Nov 2011
Location: Midwest

iTrader: (0)

"That decision was liberating. What's the point of having an M240i only to drive it like an accountant?"

I drive mine like I stole it. I'm doing the Germans a favor. If you're not shifting near the redline, you're wasting engineering talent. We didn't kick their ass 70 years ago to squander their abilities. I enjoy burning hydrocarbons. I appreciate the sacrifice those dead dinosaurs made. Hypermiling is grounds for revocation of your "Man Card". They're communists, and deserve our scorn and ridicule. Blow their doors off at every opportunity. Electric cars suck. That means you Prius and Tesla losers. Pull the plug. Plus, they don't make enough noise. God gave us five senses, and we ought not ignore "Sound". Besides, "I have the need for speed". So GTF out of the left lane. I'm not testing them when I flash my high beams. Finally, drive a stick shift. They're "the millennial anti-theft device", and you'll feel like a man again. You chicks can either learn to drive one, or rent a car when your car goes in for service. Put both feet down when she resists, and tell her who's Boss.
Appreciate 3
Avex50.50
      10-12-2018, 10:47 PM   #9
snaketh
Second Lieutenant
United_States
100
Rep
260
Posts

Drives: 2015 M235i 6MT
Join Date: Jan 2015
Location: CA

iTrader: (0)

"If you're not shifting near the redline, you're wasting engineering talent."



Love it! Lol
Appreciate 0
      10-13-2018, 12:20 AM   #10
MetalMK
First Lieutenant
Canada
229
Rep
328
Posts

Drives: BMW
Join Date: Dec 2017
Location: Canada

iTrader: (0)

Alright, shift near redline it is!
Appreciate 0
      10-15-2018, 12:53 PM   #11
Taskmaster
Banned
Japan
2465
Rep
9,004
Posts

Drives: M235i 6MT / E92 328 Msport 6MT
Join Date: Nov 2013
Location: Florida

iTrader: (6)

I find better gas mileage is sport over Econ - the minor pedal movement helps acceleration with a smaller hit to gas mileage.
Appreciate 0
      10-15-2018, 10:44 PM   #12
SteveInfante
NewFinishColumbia/detailer
SteveInfante's Avatar
United_States
604
Rep
2,096
Posts

Drives: 2015 F31 xDrive
Join Date: Sep 2010
Location: Columbia, SC

iTrader: (0)

I wouldn't know, I'm usually at 6k and in Sport. I averaged 22mpg on my N20 for the last thank. Ha ha.
__________________
328 F31 xDrive/OSM/Venetian Luxury Line/Cold Weather/Premium/Driving Assist/Nav/Tech "Golden Goose"
78' Honda CB400A project
http://www.instagram.com/steve_inf31
Appreciate 0
      10-15-2018, 11:20 PM   #13
Rosseau
Private
United_States
25
Rep
78
Posts

Drives: 2019 M240i xdrive
Join Date: Sep 2018
Location: Cleveland OH

iTrader: (0)

Quote:
Originally Posted by stevenvillatoro View Post
From 2002 to 2018, I was a hardcore hypermiler. It was an obsession that led me to own nothing but emasculated hybrids and one very puny EV. I obsessed over every fraction of a MPG and Kw. Every tankful and charge was documented during those arduous 16 years.

I have NO idea how I got so indoctrinated into that "economy-over-pleasure" phase of automotive austerity. So, when I got this BMW, I resolved to quit the pointless ritual of monitoring my fuel economy... and to rekindle the joy of my prior sports car days.

That decision was liberating. What's the point of having an M240i only to drive it like an accountant? Spending $50K on a fun car, and then worrying about saving $20-40 a month on gas simply doesn't make sense.

To the OP, Sport mode doesn't cause much of fuel ding. Depending on how/where I drive, no more than a 10-20% loss in Sport... not worth the sacrifice. I switch things up between Comfort and Sport. Sometimes 'ya feel like a nut... !
I haven't been on this forum long, but never would have guessed that about you in a million years. The only thing myself and others need to "suck up" is the high cost of 93 octane. People always saying gas is cheap, but I'm paying up to $3.50 a gallon for the good stuff - and will continue to do so!
Appreciate 1
      10-16-2018, 11:27 AM   #14
MetalMK
First Lieutenant
Canada
229
Rep
328
Posts

Drives: BMW
Join Date: Dec 2017
Location: Canada

iTrader: (0)

Quote:
Originally Posted by Rosseau View Post
I haven't been on this forum long, but never would have guessed that about you in a million years. The only thing myself and others need to "suck up" is the high cost of 93 octane. People always saying gas is cheap, but I'm paying up to $3.50 a gallon for the good stuff - and will continue to do so!
Here in Canada I pay the equivalence of 4.8 USD per litre for 87, 5.5 USD per litre for 91.
Appreciate 0
      10-16-2018, 12:20 PM   #15
albertw
First Lieutenant
Canada
116
Rep
318
Posts

Drives: M240i
Join Date: Nov 2017
Location: Canada

iTrader: (0)

Quote:
Originally Posted by MetalMK View Post
Here in Canada I pay the equivalence of 4.8 USD per litre for 87, 5.5 USD per litre for 91.
Um, where do you live? Alert?

My cost per liter is $1.15 US for regular and $1.30 US for premium. About average across southern Canada. (Your numbers are reasonable for US gallons.)
__________________
18 M240i RWD auto
Previous: 01 Z06, 99 323i
Appreciate 0
      10-16-2018, 07:20 PM   #16
Lipper
Private First Class
Lipper's Avatar
Australia
42
Rep
105
Posts

Drives: 2015 M235i 6MT
Join Date: Feb 2018
Location: Brisbane, Australia

iTrader: (0)

This might be of interest when discussing this topic:

__________________
2015 M235i 6MT | Alpine White/Black Dakota | MPerformance Body Kit | 19" M-Sport 359s w/Pilot Sport 4S (r:255/30 f:225/35)
BMS JB4 w/Bluetooth| Wagner Competition IC | Wagner DP | Evolution Raceworks IC Pipes | Dynan CAI | BMS Catch-Can | Active Autowerks Axle-Back | ECS 2-Piece Rotors/Hawk HPS 5.0 Pads | Full MP Carbon/Alcantara Trim | M-Performance Alcantara/LED Steering Wheel
Appreciate 0
      10-17-2018, 09:34 PM   #17
MetalMK
First Lieutenant
Canada
229
Rep
328
Posts

Drives: BMW
Join Date: Dec 2017
Location: Canada

iTrader: (0)

Quote:
Originally Posted by albertw View Post
Um, where do you live? Alert?

My cost per liter is $1.15 US for regular and $1.30 US for premium. About average across southern Canada. (Your numbers are reasonable for US gallons.)
Vancouver, BC. 1.64 CAD per litre for 87 and 1.86 CAD per litre for 91. Seems like we need to move to Texas.
Appreciate 0
      10-17-2018, 10:18 PM   #18
aerobod
Car Geek
aerobod's Avatar
3624
Rep
3,592
Posts

Drives: Caterham R500, M2-G87, Macan S
Join Date: Mar 2008
Location: Calgary

iTrader: (0)

Quote:
Originally Posted by MetalMK View Post
Vancouver, BC. 1.64 CAD per litre for 87 and 1.86 CAD per litre for 91. Seems like we need to move to Texas.
$1.19 CAD for Shell 87 and $1.39 CAD for Shell 91 in Calgary at the moment - looks like you need more pipeline and refinery capacity and less carbon taxes
Appreciate 0
      10-18-2018, 06:10 AM   #19
morphomeman
Major
morphomeman's Avatar
593
Rep
1,219
Posts

Drives: 2015 M235ix
Join Date: May 2015
Location: United States

iTrader: (1)

Garage List
2016 BMW X3  [0.00]
2015 BMW M235ix  [0.00]
The US is the only large market that has a high proportion of large-displacement and otherwise high-powered engines, because it has the cheapest fuel prices of any large market. The smaller-displacement BMWs and other marques are not even sold here.
In markets where fuel is more expensive, fuel economy matters much more, which is incidentally why diesels are much more prevalent.
Of course, all that will fade away as electrics take over. Even the fastest electrics are much more efficient.
Appreciate 0
      10-18-2018, 11:58 AM   #20
Texan2er
Private
United_States
20
Rep
58
Posts

Drives: 2015 M235i
Join Date: Sep 2018
Location: Houston, TX

iTrader: (1)

Quote:
Originally Posted by morphomeman View Post
Of course, all that will fade away as electrics take over. Even the fastest electrics are much more efficient.
Rotten, silent fiends...
Appreciate 0
      10-20-2018, 01:32 PM   #21
dradernh
Brigadier General
dradernh's Avatar
4394
Rep
3,496
Posts

Drives: 2017 M240i
Join Date: Aug 2013
Location: SW Ohio

iTrader: (0)

Quote:
Originally Posted by CE750Jockey View Post
If you're not shifting near the redline, you're wasting engineering talent.
Quote:
Originally Posted by SteveInfante View Post
I wouldn't know, I'm usually at 6k
Impressive, gentlemen, impressive indeed!

__________________
2017 M240i: 23.8K, 28.9 mpg, MT, Sunroof Delete, 3,432#, EB, Leather, Driving Assistance Package, Heated Front Seats | Sold: E12 530i, E24 M635CSi, E39 520i, E30 325is, E36 M3 (2)
TC Kline Coilovers; H&R Front Bar; Wavetrac; Al Subframe Bushings; 18X9/9½ ARC-8s; 255/35-18 PS4S (4); Dinan Elite V2 & CAI; MPerf Orange BBK; Schroth Quick Fit Pro;
GTechniq Crystal Serum Ultra Ceramic; Suntek PPF

Last edited by dradernh; 10-20-2018 at 01:38 PM..
Appreciate 0
      10-20-2018, 06:12 PM   #22
designatedposter
Captain
175
Rep
643
Posts

Drives: m235i
Join Date: Aug 2017
Location: ct

iTrader: (0)

Quote:
Originally Posted by dradernh View Post
Quote:
Originally Posted by CE750Jockey View Post
If you're not shifting near the redline, you're wasting engineering talent.
Quote:
Originally Posted by SteveInfante View Post
I wouldn't know, I'm usually at 6k
Impressive, gentlemen, impressive indeed!

[IMG]http://u.cubeupload.com/EdWinter377/...iCoupeSpee.jpg[/IMG]
Is the gear ratio shorter for the m240 vs the m235? I recall exceeding 101.9 in 3rd gear in m235
__________________
M235i rwd 6mt
Appreciate 0
Post Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 03:17 PM.




2addicts
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST