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vertice V I know there have been numerous posts regarding the "Active Eco" button, but I didn't really find any answers to my question. Does Active Eco wear the engine and motor more? I've heard driving in a lower RPM while trying to speed up in a higher gear isn't that good for the motor since it has to work harder. Also, are the spark plugs more likely to get fouled because of the lower RPM as well? A few friends said that it's best for a little higher RPM so the fuel can burn at a higher temp, would this be correct and do these things mean the Active Eco button is hurting the engine more in the long run which can also lead to worsen the fuel economy? #1 · May 22, 2013 I know there have been numerous posts regarding the "Active Eco" button, but I didn't really find any answers to my question. Does Active Eco wear the engine and motor more? I've heard driving in a lower RPM while trying to speed up in a higher gear isn't that good for the motor since it has to work harder. Also, are the spark plugs more likely to get fouled because of the lower RPM as well? A few friends said that it's best for a little higher RPM so the fuel can burn at a higher temp, would this be correct and do these things mean the Active Eco button is hurting the engine more in the long run which can also lead to worsen the fuel economy? Sort by Oldest first Oldest first Newest first Most reactions #2 · May 22, 2013 I don't think these fuel saving settings have been around long enough to see the effects down the road for any of them. Personally, I'd be more concerned about things like Mazda's Skyactive approach, which uses very high engine compression rates to achieve better gas mileage. Compression is a stress on the engine's components and gaskets. The higher compression, the more strain. This, combined with the industry's shortest powertrain warranty would make me worry a bit. Hyunday provides the industry's longest power train warranty. If there is any negative effect of using ECO, it will be covered for the next decade, or 100,000 miles. Sleep well at night. #3 · May 22, 2013 The GDi isn't a low compression engine either, its some where around a 11:1 which is pretty high. #4 · May 22, 2013

vertice said: Does Active Eco wear the engine and motor more? Click to expand...

Where DO people come up with this stuff ?? No, no, no, no......all that stuff is bunk. While it is possible to "lug" the engine with an automatic transmission, it is HIGHLY unlikely. #5 · May 22, 2013 I get the transmission function of ECO, however what would be the cause for this comment in the 2013, Santa Fe manual, 5.50: When Active ECO is activated - The engine noise may get louder - The engine speed may slightly be reduced (Trans Related) - The AC performance may be affected (understandable) When I have ECO on in the garage the engine sounds like its dieseling maybe not that bad, but what increases the noise volume? jd #6 · May 22, 2013 Very interesting discussion... my wife and i both got the accent at the same time. she does not use her ECO and I do I have been watching her MPG avg and mine and hers seems better.... I am going to test that on next couple tanks of gas. the only thing i have seen with the ECO is if you turn it off (by accident) it does not let me turn it back on for some time. #7 · May 22, 2013 Our cars are programmed to "turn off" active eco if you push down on the pedal hard enough if you want to speed up AND if hill assist activates. So no, the car won't kill itself using Active Eco all the time. #8 · May 23, 2013 Thanks for all the replies guys. I guess it's still kind of hard to tell exactly what would happen to the car since Active Eco is still quite new. Although, I talked to my friend today who has worked with piston engines for aircraft, and he mentioned that having the engines at higher RPMs is overall better for the health of the moving parts and seals. He also mentioned that doing so helps the spark plugs. Now I know car engines and aircraft engines have to meet different requirements, but aren't the principles behind them the same? #9 · May 23, 2013

vertice said: Although, I talked to my friend today who has worked with piston engines for aircraft, and he mentioned that having the engines at higher RPMs is overall better for the health of the moving parts and seals. He also mentioned that doing so helps the spark plugs. Click to expand...

What does "worked on" actually mean ?? Formal training ?? Just like any profession, some mechanics end up with wierd ideas about things too. In general, an engine has it's longest life if operated at a constant medium speed. Also in general the stress is higher the faster it goes and the life is less. Airplane engines get completely rebuilt after so many hours becase they are under a lot of stress. And "helps the spark plugs" ?????? :rolleyes:

Show more replies 1 Reply #11 · May 24, 2013 And has anyone noticed a slight jerk when they brake with Active Eco on? #12 · May 24, 2013 I have..very noticeable Sent from AutoGuide.com Free App #13 · May 25, 2013 The ONLY thing active eco does, is dial back the throttle response. If you drive with eco off, with an extremely light foot, the car acts like its in "eco mode". It does nothing with engine programming, shift points, etc. Its more of a passive assistance to help your foot not be so heavy. #15 · Jun 3, 2013 Eco mode lowers normal shift points. For example, with Eco mode off mine won't shift into 6th gear until about 47 Mph. With Eco mode on it will shift at about 43 Mph. Most of the speed limits where I drive are 45 Mph, so it makes a noticeable difference for me. 0 Reply #14 · Jun 2, 2013 I don't understand where and how people come up with such conclusions? As was said previously, driving with a light foot is the same as Eco mode. When you try to accelerate hard while in Eco mode, the onboard computer ignores Eco mode. Also you are driving by wire, not cable. So even if you have it on "manual-auto" and floored it, the computer will only let the engine go so much. Oh, and that jerking with Eco mode on, is engine braking. Watch your RPM when that happens. Insert Quotes Post Reply

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