Quicke update from Tk in regards to the powertrain options in 2026 JT & beyond.

[Sweetums]

I hope he is wrong about the V6 going away.

The Pentastar V6 is getting to the end of its useful life's cycle. If Stellantis isn't looking at a replacement now they are already behind. The current demand is cross platform sharing and the Pentastar was fine for street cars, but lacked the low end power curve of the 4.0 it replaced.

Jeep really needs an engine built for purpose rather than a minivan or crossover engine stuffed in it.

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[RidinDirty]

3.6 is dead. No use crying over this. If you really want one, just wait until the final engine options are announced for 2026, you should be able get a discount.

 

[Hootbro]

The current demand is cross platform sharing and the Pentastar was fine for street cars, but lacked the low end power curve of the 4.0 it replaced.

Unless I missed something, the 3.8 V6 replaced the 4.0

 

[ShadowsPapa]

Unless I missed something, the 3.8 V6 replaced the 4.0

Yeah, it was SOHC, then the Pentastar DOHC came after that.
The 3.6 was also placed in SUVs, including the Grand Cherokee in the first year, then the JK a year later - so it wasn't really created to only be a car or "minivan" engine as people keep calling it.

 

[Hootbro]

Yeah, it was SOHC, then the Pentastar DOHC came after that.
The 3.6 was also placed in SUVs, including the Grand Cherokee in the first year, then the JK a year later - so it wasn't really created to only be a car or "minivan" engine as people keep calling it.

Yeah, I had read the transverse and longitudinal Pentastar engines were co-developed at the same time. Just "en masse" they went into a lot minivans at first.

 

[ShadowsPapa]

In the first model year, according to wikipedia (assuming it's correct):

2011–2017 Chrysler 200[8] (Models: LX, Touring, Limited, S, and C)
2011–2016 Chrysler Town & Country (Models: LX, Touring, Touring "L", Limited, S, Limited Platinum)
2011–2014 Dodge Avenger (Models: SE V6, SXT, R/T)
2011–2023 Dodge Challenger (Models: SE, SXT, SXT +, SXT Rallye Edition, GT)
2011–2023 Dodge Charger (Models: SE, SXT, SXT +, SXT Rallye Edition, GT)
2011–present Dodge Durango (Models: Express, SXT, Crew, Crew Lux, Citadel, ACT Plus, Limited, GT)
2011–2020 Dodge Grand Caravan (Models: SE American Value Package (AVP) or Canadian Value Package (CVP), SE, Crew, Crew Lux, SXT, R/T, SE Plus, SXT Plus, GT)
2011–2019 Dodge Journey (Models: SE American Value Package (AVP) or Canadian Value Package (CVP), Mainstreet, Crew, Crew Lux, SXT, R/T, GT, Crossroad)
2011-present Jeep Grand Cherokee (Models: Laredo "E", Laredo "X", 70TH Anniversary Edition, Trailhawk, Altitude Edition, Limited, Overland, Overland Summit Edition)
2011–2014 Volkswagen Routan (Models: S, SE, SEL, SEL Premium)
2011–2023 Chrysler 300 (Models: 300 Base, 300 S V6, 300 C w/ V6, 300 C Glacier Series w/ V6, 300 C Luxury Series w/ V6)
2011–2015 Ram Cargo Van (Models: C/V Base, C/V Tradesman)


Then the next model year:

2012–2018 Jeep Wrangler JK
2012–present Ram 1500

So it went into about everything right away, including cargo vans, Grand Cherokee, Durango and of course a list of cars, SUVs, vans, minivans and whatever.

Had AMC survived another year, it's a safe bet the 4.0 would have gone into their cars although all that was left was the Eagle. The block was literally made for it (the Eagle, that is)

 

[Sweetums]

Unless I missed something, the 3.8 V6 replaced the 4.0

Semantics, the 4.0 was in the Wrangler, so was the 3.8 and the 3.6; it's in the same nameplate and same market segment.

 

[Hootbro]

Semantics, the 4.0 was in the Wrangler, so was the 3.8 and the 3.6; it's in the same nameplate and same market segment.

4.0 died with the TJ and did not carry over to the JK which had the 3.8 at first for four model years before going to the 3.6 Pentastar.

Not exactly a overlap.

 

[Sweetums]

4.0 died with the TJ and did not carry over to the JK which had the 3.8 at first for four model years before going to the 3.6 Pentastar.

Not exactly a overlap.

I never said they overlapped, I said the 4.0 and the 3.6 both went in the Wrangler (not the TJ, JK, or JL - Wrangler). The 4.0 made something like 80% of peak torque at just over idle, a nearly perfect torque curve for crawling. The 3.8 and 3.6 were built for crossovers and minivans schlepping around strip malls and school zones.

 

[ShadowsPapa]

The 4.0 was first proposed by Mexican engineers at VAM.
It was based on the AMC designed 2.5 I4
That 2.5 was designed from the ground up to be for Jeeps and Eagles - to be not a car engine.
The 4.0 came from that 2.5, which was built for Jeeps and Eagles.
However, having had the early 4.0s, they were not that impressive with the RENIX systems. The better torque and HP numbers came later. Tough engines, but........ in their infancy in 86/87 model years.

 

[Sweetums]

The 4.0 was first proposed by Mexican engineers at VAM.
It was based on the AMC designed 2.5 I4
That 2.5 was designed from the ground up to be for Jeeps and Eagles - to be not a car engine.
The 4.0 came from that 2.5, which was built for Jeeps and Eagles.
However, having had the early 4.0s, they were not that impressive with the RENIX systems. The better torque and HP numbers came later. Tough engines, but........ in their infancy in 86/87 model years.

They never made a lot of power, but they were reliable and how that power came on was ideal. 175 bhp was not awful at the time of development, but we have 3 cylinder economy engines putting out more than that today.

What we need is an under square engine with good low end torque, not a mid-range rpm design intended for city cars.

 

[Jrgunn5150]

3.6 is dead. No use crying over this. If you really want one, just wait until the final engine options are announced for 2026, you should be able get a discount.

But it's definitely not only not dead, it's literally the only option.

The plant build schedule is posted, in this thread, for the next 18 months of production.

Don't let any facts get in the way of a good story though.

 

[ShadowsPapa]

But it's definitely not only not dead, it's literally the only option.

The plant build schedule is posted, in this thread, for the next 18 months of production.

Don't let any facts get in the way of a good story though.

Next 18 months - let's see, that's ALL of the rest of this year (6 months) and ALL OF the total of 2026 calendar year (12) months, which would include the beginning of the 2027 model year unless they don't build any 2027s at all until 2027 calendar year.
In other words, the rest of the 25 model year, all of the 26 model year, and possibly into the 2027 model year.
Is my logic sound, Spock?

 

[Gvsukids]

What we need is an under square engine with good low end torque, not a mid-range rpm design intended for city cars.

Like a diesel?

 

[Jrgunn5150]

Next 18 months - let's see, that's ALL of the rest of this year (6 months) and ALL OF the total of 2026 calendar year (12) months, which would include the beginning of the 2027 model year unless they don't build any 2027s at all until 2027 calendar year.
In other words, the rest of the 25 model year, all of the 26 model year, and possibly into the 2027 model year.
Is my logic sound, Spock?

3.6 production steady at more or less the same quantities the entire time, as per the chart.

If an engine was dead, it would be bizzare to produce it steadily for another 18 months

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