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#1
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Deceptive MPG estimates for 2011 35i?
I personally haven't seen anything better than 20 MPG on the highway. I feel like BMW has been a bit deceptive on their fuel estimates and now they have switched the estimate from 25 to 23. Is this even allowed? I'm curious to hear what others have to say and what kind of mileage they are getting. |
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#2
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BMW doesn't get to pick the published mpg figures, those are as per US government test cycles. However, the test cycles are not at all representative of the real world. In an effort to make them more realistic, the government has twice mandated 'correction factors' so that even the numbers measured on the dyno are not what is printed on the sticker.
Bottom line is that you can sort of use the window stickers to compare one model to another, but you shouldn't expect any particular correlation to the real world. Sad but true. You should expect some real world improvement as the vehicle breaks in, up to about 5000 miles. Edit: Found a link for you. Details of the changes in calculation here: Regulatory Announcement: EPA Issues New Test Methods for Fuel Economy Window Stickers | Fuel Economy | US EPA Excerpt: In 2011, manufacturers will need to perform additional cold temperature, air conditioning, and/or high speed/rapid acceleration driving tests for those vehicles most sensitive to these conditions. However, in order to provide consumers with better fuel economy estimates sooner, EPA will use new calculation methods that capture these driving conditions. I read that last line as "apply a correction factor"
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2007 X3 3.0si, 6 MT, Premium, White Retired: 2008 535i, 6 MT, M Sport, Premium, Space Grey 2003 X5 3.0 Steptronic, Premium, Titanium Silver 2002 325xi 5 MT, Steel Grey 2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue Last edited by JCL; 01-05-2011 at 08:33 PM. |
#3
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I guess my biggest gripe is that the numbers have been changed. I should have known 25 MPG was too good to be true. Oh well.
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#4
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EPA estimates come from.... the EPA. They are often behind in their certifications, hence likely the delay in posting the rating on the web. However cars can't be sold without out the rating on the sticker. My guess it the EPA estimated the rating and then had to correct it down after further testing.
Omy my 50i, I have gotten close to 20 on pure highway trips, equal or better to the EPA 19 MPG estimate. But even the shortest city drives or any "fun" I have drops it fast.
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Richard Sir Snaps-a-lot, 9 Time Dragon Slayer (54 runs!) 2011 X5 50i Alpine White, Biege Nappa /Lt Poplar M Sport 2009 Z4 35i, Black Sapphire/Ivory-Black/Anthracite Gone but not forgotten: '08 550i, '06 X3, '06 650i, '02 M5, '99 540i |
#5
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Simply anecdotal, but our newest car, the CEO's Hyundai Tucson, has never gotten close to the "31 mpg hwy" that the sticker and all of Hyundai's lit boasts about. I've even done a longish trip, no a/c, driving like a geezer, and the best I could do was the high 20s.
I have several car nut geezer buds, many with new cars in the past year or so, and all have remarked that they cannot get near the "highway" number on their various cars...In my older cars I can do that easily. Something has changed/gotten more lab-like and even less real world-like imo, down at the Ministry of Save Us From Ourselves, aka the US EPA. Not surprised that few here report mpg that matches their X's window sticker, esp if done over many tanks worth, with arithmetic, not the OBC readout. GL, mD
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Ol'UncleMotor From the Home Base of Pro Bono Punditry and 50 Cent Opins... Our Mtn Scenes, Car Pics, and Road Trip Pics on Flickr: http://www.flickr.com/photos/4527537...7627297418250/ http://www.flickr.com/photos/4527537...7627332480833/ http://www.flickr.com/photos/45275375@N00/ My X Page |
#6
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I've gotten 25.5 MPG during extended interstate driving, and that was with around 4k miles on the odometer.
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2011 xDrive 35i Sport Activity/Black Sapphire/Tobacco/Technology Pkg/Convenience Pkg/Premium Audio/Heated Rear Seats/Tint/Running Boards/Black Grill |
#7
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Some cars do better than EPA estimates, some do worse. My 135 cabrio showed an average of 24mpg at turn in, that was in 8000 miles. Pretty good, considering the acceleration! My Mini Cooper S cabrio (turned in December) had a final average of 34, and my current (non S) is currently at 38.4!!! average with only 1500 miles on the odo! It just keeps going up and up! The EPA window sticker says 29/37.
I'll say this: driving style is the key. I have been watching the instant MPG display like a hawk and I can make a HUGE difference if I slow down a few MPH going up hills (as long as no one is behind me) |
#8
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I have 19 mpg in the city
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2011 X5 xDrive35d: Vermillon Red, Cold Weather Package, Premium Package, Premium Sound Package, Rear Climate Package, Sport Activity Package, Technology Package, Comfort Access keyless entry, Heated rear seats, Rear seat entertainment 2008 535xi Sport: Platinum Grey/ 6 sp. Manual/ Black Nappa Leather / Sport Pack / Prem Pack / Prem Sound Pack / Cold Weather Pack / Nav / Logic 7 Retired BMW: 2004 E53 3.0 2001 330ci |
#9
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20mpg on a 35i is pretty good, since my 09 30i is getting 20mpg LOL
Last edited by Jeg Norge; 01-06-2011 at 01:23 PM. |
#10
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I've seen 22-23mpg on pure highway, esp. when cruise control is used. 2 things I've observed which should be obvious but I'll point out anyway:
Mpg begins to drop as your speed exceeds 80mph. My avg. mpg was consistently climbing until I exceed 80+, and begins to decline until I'm <80 again. Keep that mpg needle above the 20mpg mark, which is sometimes difficult to do unless cruise ctrl is used. I use the cc stalk to adjust speed instead of gas/brake/reset speed.
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11' X5 35i Sport Activity - AW/Blk/Alum 06' Subaru Legacy GT - GONE 05' BMW X3 3.0 - GONE 01' Honda Prelude, modded - GONE |
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