Best HWY MPG

eurojulien · 07-26-2014, 01:04 PM

For about 200 miles I was averaging 42 mpg, a/c on, rolling hills on a stretch of I81. Average speed was 75 mph.

I was doing slight hypermiling:
- Coasting down hills
- Didn't accelerate going up hills
- Never used the brakes

Once I stopped caring and after a little city driving I totaled out around 39.2 MPG for the 700 mile trip.

I figure with lighter wheels/tires/brake rotors? a tune and a mufflerectomy I could get into the mid 40s.

What have you guys seen?

If this is a duplicate thread, sorry

135i_vs_ · 07-26-2014, 01:25 PM

39+ mpg highway cruisng 70-75mph. No AC, with JBd.

I noticed cruise control manages mpg at optimum. I try to use it on the highway.

AzureHaze · 07-26-2014, 02:01 PM

There's no way you can get even decent hwy mpg around my parts unless you're on the road anytime past midnight to comfortably activate cruise control.

I need to go on a road trip soon to see how well my diesel can do in the mpg department.

dixy2k · 07-26-2014, 02:17 PM

40.8 for the entire tank, doing some city driving too.

335dlci · 07-26-2014, 02:45 PM

23 avg..

Yozh · 07-26-2014, 03:08 PM

Best I've seen 39.2mpg, full stock set-up, RFTs, no hypermiling, A/C on, and about 10 city/idling thrown into it, some steep hills.

BayE30 · 07-26-2014, 04:02 PM

Quote:

Originally Posted by 335dlci

23 avg..

im in this boat.

335dlci · 07-26-2014, 04:26 PM

Quote:

Originally Posted by SF335DIESEL

Quote:

Originally Posted by 335dlci

23 avg..

im in this boat.

By choice?? Lol

rogerdiaz · 07-26-2014, 08:05 PM

39 mpg highway 70-75mph

mefferso · 07-26-2014, 11:06 PM

almost 44mpg cruising behind an 18-wheeler for an hour at 75 mph. For non-hypermiling: 40mpg from Tampa to New Orleans with cruise at 70mph and a/c on.

BayE30 · 07-27-2014, 03:46 AM

went for a drive today, 36mpg with cruise control at 71.

F32Fleet · 07-27-2014, 08:17 AM

I'm ~36 mpg, but the needle is between 80-85. Unlike inter-urban hwys I try to go as fast I can safely and without getting pulled over.

floydarogers · 07-27-2014, 09:14 AM

Somewhere around 43 is about the limit I've ever gotten. That was in ideal (no wind, 60-65 mph) conditions.

Mileage is in the $hitter if under 50 mph (can't get into 6th), and anything over 65 mph starts to lower mpg also. Big fat sports package tires don't help, nor do runs to 100+ to pass traffic!

335dFan · 07-27-2014, 09:19 AM

My road trip last August of 6,500 miles from east to west and back had several tanks in the high 39 to low 41 range. Am heading next week on another road trip, but this time from Portland OR to Pagosa Springs CO and back, with a meandering itinerary on the way back to see the natural sites in the Rockies, northern AZ, southern UT, etc. Will post trip report with mileage and some pics. I am at 34.5k miles on the odometer.

eurojulien · 07-27-2014, 09:58 AM

Quote:

Originally Posted by floydarogers

Somewhere around 43 is about the limit I've ever gotten. That was in ideal (no wind, 60-65 mph) conditions.

Mileage is in the $hitter if under 50 mph (can't get into 6th), and anything over 65 mph starts to lower mpg also. Big fat sports package tires don't help, nor do runs to 100+ to pass traffic!

Never ever ever ever have done that

Kaylin032 · 07-28-2014, 10:46 PM

I've seen 47 mpg during prolonged highway driving.
31 mpg in mixed city/hwy

K

Puerto Rican 335d · 07-29-2014, 07:51 AM

Im fucked down here on the ISLAND, the best recorded for a small stint on the OBC was 42 mpg at 70 mph with RENNtech flash WAGNER IC staggered wheels at 18" besides that Im lucky to get 21-24 mpg combined, plus the fact that Im a racer doesnt help at all

cptcrunch · 07-29-2014, 09:27 AM

37.3mpg @ 85mph was the best I have seen. My vehicle average is 27.7 on a 65/35 city/highway daily commute.

Tom Droze · 07-29-2014, 10:09 AM

Since you asked... 99 MPG going down a six percent grade with my right foot resting comfortably on the floor board!

Spy vs Spy · 07-29-2014, 10:25 AM

I just completed a 1100 mile drive back to TX and averaged 30mpg over the entire trip (via idrive). I noticed that the efficiency shows ~48 mpg @ 84mph. That's consistent with my other 335d which displays the same consumption rate at that speed. Sure seems high but the slightest rise or change in pedal input causes the efficiency to plummet.

eurojulien · 07-29-2014, 09:09 PM

Quote:

Originally Posted by AngelorDevil

I just completed a 1100 mile drive back to TX and averaged 30mpg over the entire trip (via idrive). I noticed that the efficiency shows ~48 mpg @ 84mph. That's consistent with my other 335d which displays the same consumption rate at that speed. Sure seems high but the slightest rise or change in pedal input causes the efficiency to plummet.

I can see that, these cars are super efficient off boost. I did have an issue breaking that 42 MPG threshold. I think that the higher up in MPG you get the less increments the computer will display. ie 1/3 mpg around 20mpg , 1/2 mpg around 30, 1 mpg around 40, 3-5? mpg jumps? .

daveN007 · 07-30-2014, 09:46 AM

I'm generally at 36MPG in 80-85mph traffic with no attempt to conserve fuel.

I have hit 42 for a 155 mile trip at 65 MPH, but it features a 1000 foot elevation change from start to finish. Return trip was 40MPG. I can't drive like this.

07-26-2014, 01:04 PM	#1
eurojulien Second Lieutenant 33 Rep 246 Posts Drives: 135i/6 Join Date: Feb 2013 Location: SF iTrader: (0)	Best HWY MPG For about 200 miles I was averaging 42 mpg, a/c on, rolling hills on a stretch of I81. Average speed was 75 mph. I was doing slight hypermiling: - Coasting down hills - Didn't accelerate going up hills - Never used the brakes Once I stopped caring and after a little city driving I totaled out around 39.2 MPG for the 700 mile trip. I figure with lighter wheels/tires/brake rotors? a tune and a mufflerectomy I could get into the mid 40s. What have you guys seen? If this is a duplicate thread, sorry
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07-26-2014, 01:25 PM	#2
135i_vs_ Captain 72 Rep 697 Posts Drives: M5, 135i, 335d, F10 550xi Join Date: Sep 2011 Location: CT iTrader: (0)	39+ mpg highway cruisng 70-75mph. No AC, with JBd. I noticed cruise control manages mpg at optimum. I try to use it on the highway.
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07-26-2014, 02:01 PM	#3
AzureHaze Lieutenant Colonel 69 Rep 1,766 Posts Drives: 2011 335d Sport Join Date: Mar 2013 Location: SoCal iTrader: (1)	There's no way you can get even decent hwy mpg around my parts unless you're on the road anytime past midnight to comfortably activate cruise control. I need to go on a road trip soon to see how well my diesel can do in the mpg department. __________________ JBD @ 100% \| KW ST Coilovers \| M3 rep. front bumper \| 888Concepts AE Upgrade \| GP Thunder 7500k fogs \| Cyba 4" carbon tips \| BSW Stage 1 \| APEX ARC-8 W/ Michelin PSS \| Ziza LED interior \| Weisslicht LED side lenses \| Sprint Booster \| Euro side mirrors \| M-Sport semi-conversion \| Coded \| LOTS of carbon fiber
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07-26-2014, 02:17 PM	#4
dixy2k Major 88 Rep 1,152 Posts Drives: 335d Join Date: Nov 2009 Location: CA iTrader: (0)	40.8 for the entire tank, doing some city driving too.
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07-26-2014, 02:45 PM	#5
335dlci Lieutenant Colonel 277 Rep 1,575 Posts Drives: 335d Join Date: Apr 2014 Location: Socal iTrader: (0)	23 avg..
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07-26-2014, 03:08 PM	#6
Yozh Colonel 870 Rep 2,615 Posts Drives: 2011 335d M-Sport Join Date: Mar 2014 Location: Wet Coast iTrader: (4)	Best I've seen 39.2mpg, full stock set-up, RFTs, no hypermiling, A/C on, and about 10 city/idling thrown into it, some steep hills.
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07-26-2014, 08:05 PM	#9
rogerdiaz Captain 28 Rep 743 Posts Drives: 2015 335i Join Date: Sep 2010 Location: Raleigh, NC iTrader: (2)	39 mpg highway 70-75mph
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07-26-2014, 11:06 PM	#10
mefferso Second Lieutenant 44 Rep 241 Posts Drives: 2010 335d Join Date: Feb 2014 Location: Covington, Louisiana iTrader: (0)	almost 44mpg cruising behind an 18-wheeler for an hour at 75 mph. For non-hypermiling: 40mpg from Tampa to New Orleans with cruise at 70mph and a/c on. __________________
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07-27-2014, 03:46 AM	#11
BayE30 Lieutenant Colonel 1341 Rep 1,881 Posts Drives: 2011.75 E90 M3 ZCP Join Date: Jul 2014 Location: San Francisco iTrader: (5)	went for a drive today, 36mpg with cruise control at 71.
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07-27-2014, 08:17 AM	#12
F32Fleet Lieutenant General 3570 Rep 10,351 Posts Drives: 2015 435i Join Date: May 2005 Location: Southeastern US iTrader: (0)	I'm ~36 mpg, but the needle is between 80-85. Unlike inter-urban hwys I try to go as fast I can safely and without getting pulled over.
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07-27-2014, 09:14 AM	#13
floydarogers Curmudgeon and Pedant 690 Rep 3,489 Posts Drives: 2010 335d, 2014 328d Join Date: Nov 2012 Location: Bellevue, WA iTrader: (0)	Somewhere around 43 is about the limit I've ever gotten. That was in ideal (no wind, 60-65 mph) conditions. Mileage is in the $hitter if under 50 mph (can't get into 6th), and anything over 65 mph starts to lower mpg also. Big fat sports package tires don't help, nor do runs to 100+ to pass traffic!
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07-27-2014, 09:19 AM	#14
335dFan Jumping Jack Flash 321 Rep 1,692 Posts Drives: 2021 X3 M40i Join Date: Nov 2012 Location: California (east of Sacramento) iTrader: (0) Garage List 2021 BMW X3 M40i [0.00] 2017 Toyota Prius [0.00]	My road trip last August of 6,500 miles from east to west and back had several tanks in the high 39 to low 41 range. Am heading next week on another road trip, but this time from Portland OR to Pagosa Springs CO and back, with a meandering itinerary on the way back to see the natural sites in the Rockies, northern AZ, southern UT, etc. Will post trip report with mileage and some pics. I am at 34.5k miles on the odometer. __________________ 2021 X3 M40i: M Sport Differential, Adaptive M Suspension. Previous BMWs: 1971 BMW 2002, 1973 BMW R75/5, and 2011 BMW 335d Previous Other Vehicles: '67 Cougar, '70 911e, '86 Jetta Diesel, '05 and '12 Foresters, et al.
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07-28-2014, 10:46 PM	#16
Kaylin032 Private First Class 4 Rep 108 Posts Drives: E93 M3 and 335d Join Date: Oct 2011 Location: Dallas TX iTrader: (0) Garage List 2011 BMW 335d [6.50] 2011 BMW M3 Convert ... [9.00]	I've seen 47 mpg during prolonged highway driving. 31 mpg in mixed city/hwy K
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07-29-2014, 07:51 AM	#17
Puerto Rican 335d Brigadier General 229 Rep 3,489 Posts Drives: Montego Blue 335d Join Date: Jun 2011 Location: Puerto Rico(Dominican Republic 03/2017) iTrader: (0)	Im fucked down here on the ISLAND, the best recorded for a small stint on the OBC was 42 mpg at 70 mph with RENNtech flash WAGNER IC staggered wheels at 18" besides that Im lucky to get 21-24 mpg combined, plus the fact that Im a racer doesnt help at all __________________ RENNtech Flash(Lenny Wu)/WAGNER IC Enkei Rajin 18"/Execuhitch Hitch/Koni FSD Soft Ride Bike Rack/Brava Synthetic Motor Oil(Made in Puerto Rico)/Meth(in the works)/CBU done w Andrew EGR Race Pipe (whoa! what an animal it is now)
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07-29-2014, 09:27 AM	#18
cptcrunch Captain Crunch 168 Rep 548 Posts Drives: 2016 340i Join Date: May 2011 Location: Cincinnati iTrader: (0)	37.3mpg @ 85mph was the best I have seen. My vehicle average is 27.7 on a 65/35 city/highway daily commute. __________________ On Order (in transit): BMW iX 50, Oxide Grey Retired: BMW Welt Delivery 4/14/16: European Delivery - 2016 340i EBII/Saddle - ZMP \| ZCW \| ZDA \| ZLP \| ZTP \| M Adaptive \| Rear Shades \| MPPSK Before and After Dyno Retired: 2011 335D Space Grey/Black - ZSP \| ZPP \| ZCW \| 6FL \| Sat Radio \| Nav \| $600 Base Audio Upgrade
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07-29-2014, 10:09 AM	#19
Tom Droze Major 413 Rep 1,286 Posts Drives: 2012 BMW 328i (e92) Join Date: Jul 2014 Location: Scottsdale, Arizona iTrader: (0)	Since you asked... 99 MPG going down a six percent grade with my right foot resting comfortably on the floor board!
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07-29-2014, 10:25 AM	#20
Spy vs Spy New Member 0 Rep 5 Posts Drives: e90 335d x 2 Join Date: Jul 2014 Location: United States iTrader: (0) Garage List 2010 BMW 335d [0.00]	I just completed a 1100 mile drive back to TX and averaged 30mpg over the entire trip (via idrive). I noticed that the efficiency shows ~48 mpg @ 84mph. That's consistent with my other 335d which displays the same consumption rate at that speed. Sure seems high but the slightest rise or change in pedal input causes the efficiency to plummet.
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07-30-2014, 09:46 AM	#22
daveN007 Private First Class 5 Rep 106 Posts Drives: 2011 335d Join Date: Oct 2013 Location: Northern California iTrader: (0)	I'm generally at 36MPG in 80-85mph traffic with no attempt to conserve fuel. I have hit 42 for a 155 mile trip at 65 MPH, but it features a 1000 foot elevation change from start to finish. Return trip was 40MPG. I can't drive like this. __________________ Alpine White 2011 335d M Sport * Premium * Cold Weather * Harmon-Kardon Carrara White 2012 Porsche Cayman R
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