M-Class (W166) Produced 2012-2015

What does the ECO do?

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Old Apr 29, 2018 | 04:20 PM
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From: Palmerston North, NEW ZEALAND
2024 GLC 43 AMG, 2018 Valante van, 2017 AMG GTR
What does the ECO do?

Hi - just wondering if the ECO does more than switch off and on the engine whilst stopped? . Starting the engine is when most engine wear occurs, albeit a hot engine. I switch mine off as I find it really strange to sit at the lights without the engine running! Does it help with fuel economy in any other way? I have a petrol/gas version as you pay extra tax on diesel in New Zealand.
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Old Apr 29, 2018 | 05:10 PM
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From: at the mercedes dealer next to you
2020 GLE350 2020 Toyota Rav4H AWD XLE
that's really all its for.. i mean i had it on the W212 (e350) i had and all it did was turn on/off when i was stopped at a red light or parked. I dont think it helps with the fuel economy much. in the US the only ML that has it is the 400/63(not sure on the ML550)

Also the ML250 BTC, dont remember if the ML 350 BTC has it as well, forgot to add it for the people who like diesel

Last edited by drwolf; Apr 30, 2018 at 07:01 PM.
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