ECO Mode ON/OFF experiment (with data) - Highway driving

[Cherokee]

On my 2024 Lariat AWD Ecoboost,
Eco mode never did anything for economy.
All it did was make my engine run and respond just like it needed a tune up.

On my not yet broken in 2026 Tremor Eco mode does NOT degrade felt engine performance.
I doubt it will do anything for economy but again I’m only at 2100 miles so no way to tell.
I’ll revisit Eco mode after I cross 10,000 miles.

My Tremor’s roll out is different. It’s the off road chops I guess.

So I’m no help on this subject.
I think Eco mode was simply a marketing trick that sounded good on a spec sheet.
I think we, at least the Ecobooster crowd mostly know Eco was bullshit.

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[Tailender]

Yes, slippery all the way for me, for that and two other reasons:

1) even in Normal, the brakes are about as grabby as a billionaire. If I was to snap my neck, I'd rather do it using the go pedal than the brakes. Slippery seems to seize much more gently.

2) on short trips or at other times I want to try my luck at electric-only, slippery is a good mode unlike tow/haul or sport that forces the ICE to run any time you're in drive.

I like driving in slippery because of the not so touchy brakes.

 

[Tbone91]

Yes, slippery all the way for me, for that and two other reasons:

1) even in Normal, the brakes are about as grabby as a billionaire. If I was to snap my neck, I'd rather do it using the go pedal than the brakes. Slippery seems to seize much more gently.

2) on short trips or at other times I want to try my luck at electric-only, slippery is a good mode unlike tow/haul or sport that forces the ICE to run any time you're in drive.

"grabby as a billionaire" haven't heard that one before but love it!

 

[Cherokee]

My 2026 Tremor has perfect brakes.
I suspect those with, ‘Snappy’ brakes drink a bit too much coffee.

 

[Surly Old Bill]

My non-scientific observation is that eco mode in my Mav is only eco in city driving. It seems to kick into electric more often, and stay in it longer than normal mode. I can feel the drag when letting off the accelerator, which I assume is the battery charging. Almost, but not quite, like one-pedal driving a true EV.

Here's a pic I took the other day getting about 200mpg on a drive home after filling up, note that I am not in eco mode:

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