Helo pilot

I had a 2014 MB E350 6 cyl courtesy car the other day and the engine would cut off at every stop light.

Do all the new MB do this?

I have a 2012 E350 and it doesn't do that and I am glad. Not sure I would buy another MB if that is the wave of the future.

hillcreative

ECO mode will shut down the engine at a stop and remember the cylinder positions for a hot restart without engaging the starter. You can bypass this mode but it will default to it on restart.

advocado

It's becoming a common feature on vehicles. Ran into the same thing with a new Audi 6 that I rented on vacation. The reason is that governments are requiring higher fuel mileage stats from the manufacturers, Thus, they incorporate this into their vehicles and report the results from the cars with the auto engine stop enabled. I have a new E550 cabrio. I usually hit the ECO button as soon as I start the car to disable. No big deal. However, I have tested the mileage difference with a few tanks of gas, one tank enabled, one disabled. When ECO is active, milease is improved. Not much, maybe one mile per gallon, but hey, over a year, it does add up.

SnakeDoctor

I leave it on that is until I stop and need that A/C to be colder, which is often here in Houston.

RicAtTheBeach

I have a 2014 E550 Cab; it has this feature; Too bad it can't be disabled permanently; I hate it but shut it off when I get in as automatically and unconsciously as I do putting on seat belts. I hear that the car has 2 12 volt batteries to avoid wearing out 1 single battery too quickly. I imagine at a stop light, with the a/c and headlights on without the alternator running, it would destroy only 1 battery pretty quickly.

alzieboy

I have this feature on my E350 CDi Coupe , it can be disabled on the dash but it will always default to on when restarting the car, As for the Air Con/ Heating draining the battery, the car auto checks the voltage whilst stationary and will auto restart the car , this was a bit unnerving the first time it happened to me

Kirkster

I think it works pretty well. I'm averaging 24MPG in my 2014 E550 couple. My 2011 G37XS coupe was averaging 22MPG with a 6 cylinder

SnakeDoctor

24 MPG? I can't get close to that on mine. 17-18 MPG and I don't punch it very often at all. Very tame driving.

Kirkster

I know...crazy huh? I've reset it everytime I fill up and I get the same result every week. I had one week I was gettng 25MPG! I do think I do a great job of anticipating stop lights and stuff, so I use very little braking. My wife on the other hand is the complete opposite of me.

SnakeDoctor

Hmm maybe I should calculate it myself. I'm only going off what the car is telling me.

Kirkster

I'm going off the car too. I know i have been spending less for gas each week. i can tell the difference.