sklasse

in similar light to honda where half the cylinders shut off.
and
also weight savings.


...


light years aheaad of mercedes in that department and dont try to justify gas savings with 'if u pay 50k for a car, whats 200-300 a year'

its having to get out of ur car every 14/mpg day and fill it up that i dont like.

lkchris

Mercedes has diesels

BMW so far are afraid to.

cyclerider

I assume you mean they are afraid to sell them in the USA. They have excellent diesels available in the rest of the world.

cyclerider

Cadillac had cylinder deactivation in the early 1980's, and it was an option (but not in the USA) on S-Class V8 engines in the late 1990's. The current Chrysler Hemi has cylinder deactivation. This is not anything new.

AsianML

How does this relate to the E-Class again?

BTW, they had the cylinder deactivation on the pre-facelift W220 S600.

cyclerider

Because we don't have it. We are light years behind, didn't you read the original post?

Alan Smithee

My E320 CDI gets better mileage than any car in the BMW line-up (and better than a similarly sized Accord V6). That's why I switched to MB after a long string of BMWs.

If you're complaining about 14mpg in your E-class, it's because you bought the wrong model.

Dema

BMW really needs such technology, my V8 E class shows better fuel economy than small BMW Z4, although on papers BMW should be better. So I think this post in the right forum, to reach the same fuel efficiency, BMW should shut few cylinders.

DerekACS

Well, the new BMW 335i does indeed have a fuel saving technology.

All six cylinders are subject to shutdown when the high pressure fuel pump ceases to function.

Check out some of the BMW forums, where you will find abundant testimony to this new unintended fuel saving device that is leaving hundreds of owners stranded. Many owners are reporting 30-60 day wait times to get their car back on the road.

WEBSRFR

Not neccesarily. For one thing 4MATIC is not an option for the W211 CDI and I will never purchase a daily driver that does not have 4 wheel drive capability. Until they offer 4MATIC I'll never consider CDI.

The 5xx W211s have more than enough power for most driving situations. I completely agree with the person who started this thread. If this technology is available, and can save gas, it would be nice to see it in our cars. I fail to see a problem with having something in my car that will save gas. MB should incorporate this technology into their engine design.

AsianML

They have 4Matic CDIs, but as usual, the US market gets the short end of the stick.

Alan Smithee

You can get a CDI 4MATIC in the ML-, GL-, and R-classes.

The point is that MB is focusing on diesels if you're in the US market and want fuel economy and performance. MB isn't going to spend a lot of development money on improving the V8's fuel economy with cylinder deactivation and engine shut-off at idle when it has a whole line of 4- and 6-cylinder gasoline and diesel motors in the E-class for those that want better fuel economy. Granted, most aren't imported here, but can you see my point?

Barry45RPM

I wonder... If MB made the E with the 4 cyl engines available for distribution in the US ... would they sell any? My gut reaction is "no".

For much the same reason that people stay away from the Acura RL because it is not available with a V8.

Vik888

Gas is still too cheap here for MB to want to sell 4-cyl cars and invest in cyl shut off technology (which btw, MB has done in the past on V12's).

the CDI and BLUETEC's are the future .. maybe even a diesel hybrid.

CE750

being both a fan of MB and BMW I have to say that both make equally fine cars, but that one excels in one area and the other in another.. I think in terms of Diesel.. MB is great. Sadly MB opted to go V6 and Al vs Iron block which may or may not hold up as well (time only will tell), but for me, I'm planning to drive my I-6 CDI until it falls apart. It's the last of a bread that dates back to the 240D and before. Again, time will tell if the V6 will be as durable, as it does have technology advancements on its side. In terms of performance, and "Fun to drive" the "Average" BMW is a bit more exciting than the "Average" MB.. sure you can get an AMG, but that's not "Average"

I went recently too look for an SUV however, and I found the MB selection badly lacking. My theory is that MB makes their SUV's (especially the GL) with the American market in mind, and I tend to gravitate to the Euro designed and marketed stuff.

Anyway.. good to see BMW is trying out what Cadillac couldn't get to work... Now what we need is a hybrid that also is a diesel, that would make for a high efficiency car.

ProV1

anyone else find it absolutely ridiculous that 2007 E550 EPA rating is only at 13/20?? it would drive me nuts if i had to fill up so damn often, even with the 20+ gal tanks these cars have.

cyclerider

The EPA has changed the way it estimates MPG starting with the 2008 models. They have lowered the MPG estimates for all cars from 1985-2007 to help us compare older cars numbers with the new 2008 estimates. I suspect it will cause more cars to become subject to the Gas Guzzler Tax.

More info here:http://www.fueleconomy.gov/

emilner

The window sticker on my 07 E550 says 17/23. In city driving with less than 600 miles I have averaged between 15.5 and 16mpg. On a stretch of highway the car's display went up to 26mpg with a speed of 67mph. I use the miles driven/ gas pumped method. Of note the cars display has been 1mpg optimistic on each refill...

In terms of this "new tech", yes GM did it in the early 80's, but the technology was not yet ready for the market. Then lets face it, why would they try to improve on it when gas prices were so cheap for the next nearly 20 years. FWIW, many manufactures now have it: GM, MB, Dodge/Crysler, Honda, BMW etc. If anything BMW is a little late to the party...

sklasse

ML55 gets 12..thats right 12 in the city.....

CE750

how much power does it have? going of the window sticker, the X5 gets 15, so that's not a lot better.. I will drive it for a while, break it in and then get an idea of whether that's over or under estimated. The think about Arizona "City" driving, is that it's far less stop and go and with longer 40-45mph stretches than most "Cities" ..

sklasse

bump....

Alan Smithee

Certainly you're neither surprised nor disappointed...

benzinok

I was thumbing through the April issue of Motor Trends and they had a spy shot of the W212. They stated that there will be a Hybrid option. Also stated it was taking styling cues from both the C and the S, but would be distinctively its own car, or something to that effect. Take it for what is it worth.