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Grand Cherokee 4xe MPG, Drive Modes and More

bgarfield

New member
All very relevant to determining a purchase. I'm constantly looking for real world MPG in my vehicles, so thank you for this.

What I don't understand is how they could mess up so badly with fuel mileage and this setup. And in fact, how the 4xe even helps (in the GC) with government standards. If what's being said is true, regular commuting use averages at best in the mid 20's. Here's why it seems so odd to me:

I own a 2019 Cherokee (KL) Trailhawk Elite. I bought it with the 2.0 Turbo... the same motor they're using in the 4xe's. I know it weighs less, but a shitty around-town tank for me is 22-23 mpg. Average tanks are in the high 20's (27mpg) and highway trips I'll see as high as 32 mpg average on flats, no significant wind, but generally right around 30 mpg.
It's a great motor, so I'd simply ask: Why 4xe and all that extra weight and tech when the 2.0 by itself could likely turn better numbers. The regular GC with a 2.0 couldn't weigh more than a few hundred pounds more than the Cherokee and you'd likely see better mileage than the 4xe.

Sure, it's applying tech, giving the plug-in option for around town, and possibly transitioning. But even with that in mind, for government standards, sell the GC with a 2.0t by itself, or build a slightly higher displacement or something.

Now to a statement and a couple of questions:
- For some reason, much of the driving public assuming that physics doesn't matter when trying to achieve the best efficiency. This is very evident in Tesla owners who complain about "range" but then do 80-85 mph everywhere and accelerate away from stops making sure they are faster than everyone. NO car gets good efficiency when doing that...

- So, based on what I said above, what was the test procedure?
- What was your highway speed and was it consistent?
- What were the winds like?
- Were there hills and was a loop performed to negate a negative affect?
- What were your tire pressures?
- Did you try to use a light foot or not care?

- Is there an efficiency number while in full electric? For example, the Tesla Model 3, driven efficiently, gets in the low 200 wh/mile range.

All of this said, I'm debating how confident I feel about FORM mode for my uses. If that wasn't a concern at all, my wife would drive this around town on full electric all the time (we have a charger for the Tesla) and then when I'd use it to tow the trailer, I'd be hoping to at least best the 15 mpg I get from the Cherokee pulling the trailer (3800 lbs enclosed).

I really appreciate the real world feedback and thoughts, again, thanks for posting.

Brian
 
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GCOverland

Well-known member
All very relevant to determining a purchase. I'm constantly looking for real world MPG in my vehicles, so thank you for this.

What I don't understand is how they could mess up so badly with fuel mileage and this setup. And in fact, how the 4xe even helps (in the GC) with government standards. If what's being said is true, regular commuting use averages at best in the mid 20's. Here's why it seems so odd to me:

I own a 2019 Cherokee (KL) Trailhawk Elite. I bought it with the 2.0 Turbo... the same motor they're using in the 4xe's. I know it weighs less, but a shitty around-town tank for me is 22-23 mpg. Average tanks are in the high 20's (27mpg) and highway trips I'll see as high as 32 mpg average on flats, no significant wind, but generally right around 30 mpg.
It's a great motor, so I'd simply ask: Why 4xe and all that extra weight and tech when the 2.0 by itself could likely turn better numbers. The regular GC with a 2.0 couldn't weigh more than a few hundred pounds more than the Cherokee and you'd likely see better mileage than the 4xe.

Sure, it's applying tech, giving the plug-in option for around town,

The plug-in option around town is the main selling point - plain and simple. The fact that it has the better performance than the HEMI is nice, too.

Comparing it to an ICE Cherokee Trailhawk is mood. That vehicle is not just lighter - it is MUCH, MUCH lighter and the aerodynamics are also different because it's smaller, too.

The 2.0 by itself can't go 25 miles on electricity and does not have 375 HP and 470 lb-ft., either.

So if you just look at the 4xe and what it can accomplish without using its plug, it's not the most economic vehicle although you would still get a performance better than the HEMI at a gas-consumption lower than the Pentastar.

Tell your wife to leave the vehicle in "Hybrid" at all times. This drive-mode prioritizes the use of the electric engine until the battery runs out and occasionally turns on the ICE in between. Since sticking to Hybrid mode, FOAM has never been activated since the engine is staying "active" but only to a minimum (i.e. If you deplete the battery in Hybrid, you covered about 27 to 28 miles with only 2-3 miles on gas).
 
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