ECO mode
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Joined: Jan 2003
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From: Buffalo, NY
2013 C350 Coupe 4matic
ECO mode
I recently turned off the ECO mode and noticed a big difference in power, particularly in S mode. Has anyone else experienced this?
What does ECO mode actually do in terms of the engine? I know the A/C is optimized and adjusted with ECO on but I couldn't find anything online about this.
What does ECO mode actually do in terms of the engine? I know the A/C is optimized and adjusted with ECO on but I couldn't find anything online about this.
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C-Class Coupe 2012
As far as I've noticed, the major difference is timing between gear shifts.
S mode tends to hold the gears for longer and ECO mode tends to keep the RPM very low and mostly under 2500.
Of course, there would be other subtle differences like enhanced suspension settings in S mode etc.
S mode tends to hold the gears for longer and ECO mode tends to keep the RPM very low and mostly under 2500.
Of course, there would be other subtle differences like enhanced suspension settings in S mode etc.
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Junior Member
Joined: Jan 2003
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From: Buffalo, NY
2013 C350 Coupe 4matic
Yes that sounds about right for the E vs S transmission mode. But I'm talking about the ECO button next to the hazard/4-way flashers button on the center dash.
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Joined: Nov 2011
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From: Tampa, FL
2018 GLC300W
I recently turned off the ECO mode and noticed a big difference in power, particularly in S mode. Has anyone else experienced this?
What does ECO mode actually do in terms of the engine? I know the A/C is optimized and adjusted with ECO on but I couldn't find anything online about this.
What does ECO mode actually do in terms of the engine? I know the A/C is optimized and adjusted with ECO on but I couldn't find anything online about this.
"Mercedes Benz has incorporated a Eco mode, wherein the car Starts/Stops when one has come to a halt at the signal. This happens with utmost precision and helps improve the mileage."
See it here, near the end of the article, at http://www.zimbio.com/Mercedes-Benz/articles/IzNOW6_P6FU/Mercedes+C250+CDI+AMG+Performance+Edition
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2013 C350 4MATIC Coupe
Based on the research I did before buying the car, and from the other information I was able to gather, ECO mode is nothing more than the ECO Start/Stop function. This should only shut off the engine when you come to a stop, and re-activate the engine when you start moving again. I've found that there is a significant difference between driving in E and S modes, but I don't think ECO mode is (theoretically) supposed to make a difference in speed/power/responsiveness. Now that you brought this up though, I may test it on my drive home today 
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C-Class Coupe 2012
Thankfully, my car doesn't have the ECO feature. I was recently given a loan car which was a C250 CDI Sedan and it had the ECO start stop feature. The car was great to drive but the start stop thing drove me crazy because every time it would start again, there would be a shake that you could very obviously feel. not sure if this was due to the fact that it was a diesel engine. Is it better with the CGI cars?
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From: Buffalo, NY
2013 C350 Coupe 4matic
XShin, let me know what you think. When I originally test drove a C sedan at the dealership, the sales guy was telling me that ECO mode also optimizes the air conditioning and reduces engine power, but I have yet to see this on paper.
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C204 C250-CDI
I recently turned off the ECO mode and noticed a big difference in power, particularly in S mode. Has anyone else experienced this?
What does ECO mode actually do in terms of the engine? I know the A/C is optimized and adjusted with ECO on but I couldn't find anything online about this.
What does ECO mode actually do in terms of the engine? I know the A/C is optimized and adjusted with ECO on but I couldn't find anything online about this.
You definitely would notice a difference in power/performance if engaging Sport Mode, as that changes the transmission settings in 3 ways, firstly it sets the trans to take off in 1st rather than 2nd gear, secondly it holds the individual gears longer between changes and thirdly it kicks down earlier/more often, however there is no actual power increase it only seems that way due to the vehicle being able to accelerate quicker/better because of the lower gears (1st) in take off and holding a lower gear on the run, in CDI models the sport mode creates a very pronounced difference in performance feel
Last edited by AV1; Jun 26, 2013 at 08:04 PM.
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2013 C350 4MATIC Coupe
Thankfully, my car doesn't have the ECO feature. I was recently given a loan car which was a C250 CDI Sedan and it had the ECO start stop feature. The car was great to drive but the start stop thing drove me crazy because every time it would start again, there would be a shake that you could very obviously feel. not sure if this was due to the fact that it was a diesel engine. Is it better with the CGI cars?
Last edited by xShin; Jun 27, 2013 at 10:43 AM.
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From: North Carolina - Research Triangle
2025 C300W4 AMG, 2023 GLC300 / previous 17 GLC300, 15 BMW 228i, 13 C300, 12 C350 Coupe
S mode definitely changes the throttle responsiveness as well as the transmuission settings. If you buy the extr sport package then it does indeed change thevsteering feel. But not in a standard sport edition.
