MY12 E-Class New Engines - Fuel Economy
Out Of Control!!
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From: Earth
Porsche Macan S SportDesign / Ex M-B's: 11 & 10 & 06 E350's, 02 S500
Didn't know or missed that the 2012 E's have gone synthetic steering. I'm now curious to also feel that when I Test Drive one. Not too thrilled about it as I'm not a big fan of electronic-steering just yet.
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From: Pa.
2011 e350 4matic, 2010 Honda Pilot
Tom, yes I add the DEF myself. It is simple. About as complex as adding windshield washer fluid. I was told that as long as I kept the tank topped off, the chances of crystalization were minimal. When I took my car in for the 20K service (the first one where they drain the tank) they simply noted on the service ticket that AdBlue tank was full. It could be because of my driving style, but, I have only used about 9 gallons in 23K miles. I am paying about $5 a gallon.
I was just curious what people were doing.
I had wanted to get the diesel myself but the wife didn't like the extra noise. Perhaps next time.
Thanks
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From: Connecticut
2018 BMW 540d
Tom, yes I add the DEF myself. It is simple. About as complex as adding windshield washer fluid. I was told that as long as I kept the tank topped off, the chances of crystalization were minimal. When I took my car in for the 20K service (the first one where they drain the tank) they simply noted on the service ticket that AdBlue tank was full. It could be because of my driving style, but, I have only used about 9 gallons in 23K miles. I am paying about $5 a gallon.
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From: New York
2025 Range Rover, 2022 BMW M850 , 2017 MB E400 Coupe
My understanding is that keeping the DEF tank topped off might not be wise because of the fact that DEF has a finite shelf life...2 years after manufacture,IIRC.In fact,it's quite sensitive to degradation in higher temps (80's plus) so,in the vehicle,it may be even shorter than 2 years.Of course I'm not a mechanic...or a chemist...so my suspicions could be totally unfounded.
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From: Central Pennsylvania
2012 S350 Bluetec 4Matic, Diamond White, P2
I knew it was easy to add other than the fact there seems to be no discernable way to know how much is actually in the DEF tank ( please correct me if that is wrong )
I was just curious what people were doing.
I had wanted to get the diesel myself but the wife didn't like the extra noise. Perhaps next time.
Thanks
I was just curious what people were doing.
I had wanted to get the diesel myself but the wife didn't like the extra noise. Perhaps next time.
Thanks
MBWorld Fanatic!
Joined: Jan 2011
Posts: 1,747
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From: Central Pennsylvania
2012 S350 Bluetec 4Matic, Diamond White, P2
Not true. Most of the potential issues involving the adblue tank come from crystalization. Keeping the tank filled prevents this crystalization. Higher temps can increase the risk of crystalization, hence, keeping it topped off is a very good thing in high temps. Learned this from the Freightliner (MB) dealer. AdBlue is essential a 30% soultion of amonia. Amonia has a very long shelf life.
Last edited by ImInPA; Oct 28, 2011 at 02:28 PM.
Thread Starter
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Fuel economy.gov
As confirmation to the MY12 E-Class fuel economy figures posted previously. The following site includes details on most 2012 models which are on the market.
www.fueleconomy.gov
www.fueleconomy.gov
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Well of course?!?!. However, the numbers from the EPA don't lie. Better is better no matter how you slice it. 30 mpg on the hwy is darn impressive and the real world will likely be even better. Great progress and finally DI from MB which makes quite a difference.
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From: Central Pennsylvania
2012 S350 Bluetec 4Matic, Diamond White, P2
silberrosa. While I will not say the EPA numbers do not lie, in my personal experience, the only vehicles I have ever owned that exceeded the EPA numbers have all been diesels. In just talking with folks over a few decades of driving, most that I have spoken with do not achieve the EPA numbers on the highway, but do achieve close to the combined figure, abliet on the lower end. It is true that the new DI engines tend to offer more power and better fuel economy than their port injected predecessors, it is not as radical in real life as the hype would lead you to believe. Just enjoy whatever vehicle you drive. An mpg or two difference is not going to change your lifestyle.
Out Of Control!!
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From: Earth
Porsche Macan S SportDesign / Ex M-B's: 11 & 10 & 06 E350's, 02 S500
Wait, so is M-B underrating their MPG numbers on the sticker, or is the 20/30 number the "official" number?
Why would M-B state only 18/25 then the EPA state 20/30.
20/30 is MUCH more like it, a brand new motor can't just have an increase of 1 MPG in this day and age, totally ridiculous.
BTW, not one Benz that I've had has met EPA numbers.... They've all handily exceeded it. The 17/24 MPG number is extremely low for an E, I only get 24 MPG (mind you, I only use the computer/IC to gauge this) when going uphill and facing a headwind.
On a smooth and even drive, I'll usually see 27-29.
Why would M-B state only 18/25 then the EPA state 20/30.
20/30 is MUCH more like it, a brand new motor can't just have an increase of 1 MPG in this day and age, totally ridiculous.
BTW, not one Benz that I've had has met EPA numbers.... They've all handily exceeded it. The 17/24 MPG number is extremely low for an E, I only get 24 MPG (mind you, I only use the computer/IC to gauge this) when going uphill and facing a headwind.
On a smooth and even drive, I'll usually see 27-29.
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From: Sarasota, Florida
2011 E350, 2004 911
I just completed a 2400 mile round trip between florida to virginia and back. I have a typical 2011 E350 that I just purchased and I was getting 29.1 miles per gallon. Overall average was 28. I was getting a range of 550 to 600 miles per tank. I was amazed at the economy of this car.
Sorry about the quality of the pictures but they tell the story for the non-believers. I was driving between 68-74 mph.
This was 95% highway driving.
Sorry about the quality of the pictures but they tell the story for the non-believers. I was driving between 68-74 mph.
This was 95% highway driving.
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ImInPA - I drive a diesel, and have for years so I get it, thanks. Just impressed with the gains of the gasoline model over the outgoing one. It is great to see that when pushed the engineers can realize such gains and this is why I point it out. The future of gasoline/diesel (ICE) is hopefully brighter than some would have you believe. With start/stop and further powertrain improvements, I hope this continues.
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From: Central Pennsylvania
2012 S350 Bluetec 4Matic, Diamond White, P2
ImInPA - I drive a diesel, and have for years so I get it, thanks. Just impressed with the gains of the gasoline model over the outgoing one. It is great to see that when pushed the engineers can realize such gains and this is why I point it out. The future of gasoline/diesel (ICE) is hopefully brighter than some would have you believe. With start/stop and further powertrain improvements, I hope this continues.
