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Old 11-21-2019, 12:36 PM
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I-4 Turbo vs V6

Looking at a new Sahara Unlimited but my dealer of choice in AZ seems to only have those with the I-4 engine. Anyone have one of those? Comments on performance would be appreciated , we spend most of our Jeep time in Colorado above 9000ft. Had a 2013 Sahara Unlimited with the V6 and was totally satisfied with it.

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Old 11-21-2019, 12:55 PM   #2
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Mine (Sahara unlimited 2L turbo, w/o etorque) is still on order so I can't comment on experience, but I did test drive both and have researched the snot out of them before we decided on which one to buy.

My conclusion was if you use your Jeep primarily as a daily driver and "get up and go" is important to you, then go for the 2L.

If you want to do a bit more offroading and are willing to trade the "zipping around the city" feel for the extra power feel of the V6, then that's the one you should choose.

I liked the V6 just fine when I test drove it, but the minute I hit the gas on the I-4 I knew right away which one ABSOLUTELY HAD to be mine. I test drove the V6 once more just to be sure and was like "nope nope nope". lol

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Old 11-21-2019, 01:22 PM   #3
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I had a 2.0 e-torque as a rental for 2 weeks. I put over 1k mies on it and wheeled it too. Very spirited little engine that did well on and off-road. My only concern would be long-term durability of the engine/turbo and the whole e-torque system. I would have to have some sort of extended full warranty on it.
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Old 11-21-2019, 01:22 PM   #4
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I opted for the V6 but think I would be happy with either. I test drove several of each before buying. I went with the V6 because it doesn’t require premium fuel and it has Ben around long enough to prove itself.
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Old 11-21-2019, 05:03 PM   #5
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I opted for the v6 because it has been proven to be quicker than the 2.0 when paired with the 8 speed. After a lot of research, there was no way that I was going to buy a direct injected motor.


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Old 11-21-2019, 11:24 PM   #6
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I test drove several JLs: didn't notice a dramatic difference in performance.

I opted for the V6 because it is a proven engine and felt more refined overall .
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Old 11-22-2019, 10:59 AM   #7
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I decided to go with the I4 Turbo for my Wrangler. It has a little more torque, and a little less HP than the V6, so performance wise they aren't much different. The big thing for me was I've had two vehicles with the Pentastar V6, and both gave me troubles. Just had to drop close to $4k earlier this year troubleshooting, and subsequently getting a cylinder rebuilt. Entirely anecdotal, but it gave me the information I needed to make my choice.
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Old 11-22-2019, 11:30 AM   #8
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The Jeep website says that Premium fuel is recommended with the 2.0 Turbo. That does give me a bit of pause, when considering the turbo engine.


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Old 11-22-2019, 01:31 PM   #9
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The Jeep website says that Premium fuel is recommended with the 2.0 Turbo. That does give me a bit of pause, when considering the turbo engine.
That's right. It's recommended but not required. The manual states that 87 is the minimum requirements for the 2L Engine, but 91 is suggested for optimum performance.

So I did the math. At current prices it's going to cost me less than $8 CAD per tank more for premium fuel, and will not only protect my engine but will also give me better milage. That is a SMALL price to pay, if you ask me.

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2.0L Engine
This engine is designed to meet all emission requirements, and provide satisfactory fuel economy and performance, when using high-quality unleaded “regular” gasoline having an octane rating of 87, as specified by the (R+M)/2 method. The use of 91 or higher octane “premium” gasoline will allow these engines to operate to optimal performance. This increase in performance is most noticeable in hot weather or other heavier load conditions, such as while towing.
While operating on gasoline with the required octane number, hearing a light knocking sound from the engine is not a cause for concern. However, if the engine is heard making a heavy knocking sound, see your dealer immedi- ately. Use of gasoline with a lower than recommended octane number can cause engine failure and may void or not be covered by the New Vehicle Limited Warranty.
Poor quality gasoline can cause problems such as hard starting, stalling, and hesitations. If you experience these symptoms, try another brand of gasoline before considering service for the vehicle.
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Old 11-22-2019, 01:40 PM   #10
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You'll be happy with either one. I only chose the V6 due to simplicity since I'm a DIYer.
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Old 11-22-2019, 05:24 PM   #11
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Go test drive the I-4 and the V6... Your $$ get what you want.
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Old 11-22-2019, 08:10 PM   #12
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I have the i-4 in a two door '19 Rubicon with the 2.0 Turbo / eTorque. I've been very happy with it. I also have a '19 Cherokee with the 6, I've been very happy with that one too. The start/stop on the 2.0 is a lot better - that eTorque really smooths it out.
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Old 11-23-2019, 08:38 PM   #13
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I have about 4K miles on my 2.0 I am extremely happy with this motor it performs well and also averages 24mpg with average mixed driving. I had the V6 in my 15' JK which on its best day got 17mpg. Plenty of off the line torque. When I test drove a jeep at the dealer I assumed I was driving the V-6 and I commented to the salesman how impressed I was the off the line performance of the new and improved V-6 that's when he told me I was driving the 2.0 and was sold on the spot.
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Old 11-23-2019, 10:10 PM   #14
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I have about 4K miles on my 2.0 I am extremely happy with this motor it performs well and also averages 24mpg with average mixed driving. I had the V6 in my 15' JK which on its best day got 17mpg. Plenty of off the line torque. When I test drove a jeep at the dealer I assumed I was driving the V-6 and I commented to the salesman how impressed I was the off the line performance of the new and improved V-6 that's when he told me I was driving the 2.0 and was sold on the spot.


I am guessing it is more the transmission than the motor. My 3.6 with the 8 speed is 100% better than my 3.6 with the 5 speed. And the mileage is also much improved


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Old 11-24-2019, 11:08 PM   #15
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Before choosing my 2020 JLUR with V6 I drove many rental cars with both engines. I took a 2.0 on a trip down to Goblin Valley. You certainly get terrific MPG. I got almost 30 MPG on that trip. The 2.0 jumps off the line quicker than the V6. To me it felt too jumpy. Many others would prefer the 2.0. This is something that your really need to drive both for more than just a long test drive to get the feel of both. I am very happy with my V6.
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Old 11-25-2019, 08:22 AM   #16
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We're up to what, 87 of these same threads now? Lol.

You've got some good advice in this one, make sure you think about long term. 2.0L has a lot of crap on it that the tried-and-true 3.6L doesn't. Coolant lines under the vehicle, dual coolant systems, turbo, DI, 48V electrical system, etc. Not to mention the more frequent tune-up intervals, more expensive fuel, etc. And the torque curve is very peaky, whereas the 3.6L is as flat as a Kansas highway and drives smoother.
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Old 11-25-2019, 02:09 PM   #17
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So many state tried and true with the v6.... and to think my girlfriends caravan just had $1600 if engine work done to its 3.6l V6 at just over 60k miles.

Some no matter what will prefer a v6 over the 2.0t, I am just happy we finally have 3 engine options!

Hopefully in a few more years they will finally ditch the v6 and bring a I6 turbo to the table.
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Old 11-25-2019, 10:54 PM   #18
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Hopefully in a few more years they will finally ditch the v6 and bring a I6 turbo to the table.
Now, that is a great idea. I would really welcome an I6 or V6 Turbo. Can you imagine?
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Old 11-26-2019, 08:52 AM   #19
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So many state tried and true with the v6.... and to think my girlfriends caravan just had $1600 if engine work done to its 3.6l V6 at just over 60k miles.

Some no matter what will prefer a v6 over the 2.0t, I am just happy we finally have 3 engine options!

Hopefully in a few more years they will finally ditch the v6 and bring a I6 turbo to the table.
Right, but your girlfriend's Caravan is one 3.6L out of 10 million. That hardly signifies an issue.

Like I've mentioned before, go to any Ford, Subaru, Nissan, MINI, etc. dealership and ask a seasoned mechanic which engines they see in the shop on a daily basis. Spoiler: It's the tiny turbo motors.

I just had an epiphany. Maybe THAT is why automakers are force-feeding us these POS little turbo engines. It's guaranteed money for them!
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Old 11-26-2019, 09:04 AM   #20
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Right, but your girlfriend's Caravan is one 3.6L out of 10 million. That hardly signifies an issue.

Like I've mentioned before, go to any Ford, Subaru, Nissan, MINI, etc. dealership and ask a seasoned mechanic which engines they see in the shop on a daily basis. Spoiler: It's the tiny turbo motors.

I just had an epiphany. Maybe THAT is why automakers are force-feeding us these POS little turbo engines. It's guaranteed money for them!
I have one of them tiny turbos in my Fiat 124 Spider: a little 1.4T cranking out 170HP on a car that weighs barely half a JL. It is fun as hell: it roars like a lion and thinks it is a HEMI! And it gets 35 MPG. But it already went through two water pumps in the first 4,000 miles.

I don’t need another vehicle full of drama. In fact, I need my Jeep to behave like the mature one in my garage. Especially when it comes to the drivetrain. That’s why it’s got the V6.

Got turbo?


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Old 11-26-2019, 12:36 PM   #21
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There are a lot of opinions in this thread! The bottom line is if you take good care of your vehicle (maintain it properly, don't abuse it on or off trail, etc) it SHOULD last you a long time without headache. Turbos require a little more special needs care, which is likely why it's said that they can be more problematic. The immediate thing that jumps out at me is cheap fuel. A lot of people buy vehicles without the knowledge of how to care for them, that sometimes it's the little things (like using a quality gas on a turbo engine) that can make a world of difference in the long run. Just because you CAN, doesn't always mean you should.
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Old 11-26-2019, 12:44 PM   #22
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Indeed. Until the 2.0 has been out for 5+ years to prove itself, all we have in the meantime are opinions.

BTW, my Toyota Tacoma had a direct injection 3.5 V6: yes, it was marginally more fuel efficient, but I didn’t care for the unwanted NVH it sent through the frame, the driveline and into my ears. The Jeep 3.6 V6 feels buttery smooth in comparison.
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Old 11-26-2019, 04:34 PM   #23
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I'm stealing this thread because everyone has already said all of this several times and it's boring.

I saw a beautifully modified JK with a Hemi conversion last weekend. It was magnificent!

p.s. : Buy the Turbo
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Old 11-26-2019, 10:31 PM   #24
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Indeed. Until the 2.0 has been out for 5+ years to prove itself, all we have in the meantime are opinions.
I assume you mean the 2L turbos. 2L engines have been around forever, and turbochargers aren't new either (invented in 1905, if you care). But yes... as far as the 2L Turbo on the WRANGLER goes, we're on the third year (right?). Time will tell! But I stand by my statement that if you take proper care of something (whatever it is), it SHOULD last a long time.

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p.s. : Buy the Turbo
This.
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Old 11-27-2019, 03:22 PM   #25
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Right, but your girlfriend's Caravan is one 3.6L out of 10 million. That hardly signifies an issue.

Like I've mentioned before, go to any Ford, Subaru, Nissan, MINI, etc. dealership and ask a seasoned mechanic which engines they see in the shop on a daily basis. Spoiler: It's the tiny turbo motors.

I just had an epiphany. Maybe THAT is why automakers are force-feeding us these POS little turbo engines. It's guaranteed money for them!

Obviously yes, her van is one out of millions however itís not a uncommon issue. I am not saying the 3.6 is a bad engine, itís just not bulletproof or the holy grail like many anti 2.0t people believe it is.

The shop I use for work.... a European specialist.... the opposite is true. Usually the larger displacement 6cyl+ engines are in getting work (BMW, Mercedes, Audi) sometimes many thousands of dollars to repair. Miniís simply are not reliable, typical BMW.

Stricter fuel economy regulations is why, at least thatís what I think. I have had turbo 2.0ís since the 80ís and the engine was always much more reliable vs the various jeeps I have owned (the 4.2L was horrible) as well as other vehicles (suburban/Yukon) etc for work.
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Old 11-27-2019, 06:11 PM   #26
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Now, that is a great idea. I would really welcome an I6 or V6 Turbo. Can you imagine?
If you use CarBuzz, search Jeep and a few posts down there is a article on the ďtornadoĒ engine, supposedly also called GME-T6. The article stated a patent was applied for Nov 1 of 2017 and was just accepting this year. 360-525HP and one would think this engine and the 2.0T could share a lot of stuff.

I really hope they do come out with something like this and it could work great in anything from a Jeep Wrangler to a Giulia QV
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Old 11-28-2019, 11:58 AM   #27
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Obviously yes, her van is one out of millions however itís not a uncommon issue. I am not saying the 3.6 is a bad engine, itís just not bulletproof or the holy grail like many anti 2.0t people believe it is.
I agree. Jeep's Turbo is still only on it's third year, but it's not brand new concept (it's been used in other vehicles for a VERY long time). If you know what you're buying and you learn how to take care of it properly (a 2L has different needs than the V6), then it should (quote "SHOULD") last you a long time. I strongly stand that by statement. Don't fear the Turbo!

Now the etorque on the other hand, we opted out of. Until I know WHY it was pulled from the 2L Turbo (all I was told was "there was a conflict"), and until another handful (or two) of years of testing, I'm not touching it. It could be worth the risk on a V8, but a 2L? Meh! I'm going to wait that one out.
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Old 11-28-2019, 12:27 PM   #28
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I agree. Jeep's Turbo is still only on it's third year, but it's not brand new concept (it's been used in other vehicles for a VERY long time). If you know what you're buying and you learn how to take care of it properly (a 2L has different needs than the V6), then it should (quote "SHOULD") last you a long time. I strongly stand that by statement. Don't fear the Turbo!

Now the etorque on the other hand, we opted out of. Until I know WHY it was pulled from the 2L Turbo (all I was told was "there was a conflict"), and until another handful (or two) of years of testing, I'm not touching it. It could be worth the risk on a V8, but a 2L? Meh! I'm going to wait that one out.
Chances are FCA couldn’t make the numbers work.

Jeep started offering the 2.0T with eTorque in 2018 as a $1,000 option, but they just sat on dealer lots unsold.

Either FCA did a poor job of articulating eTorque’s benefits to consumers, or consumers weren’t convinced eTorque was worth the extra money, or Jeep buyers don’t trust FCA with such new technology.

The bottom line is FCA needs the 2.0 to work for US CAFE and overseas engine displacement reasons, so it must have figured removing eTorque was the path of least resistance. The part I still don’t get is why offer it on Saharas.
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Old 11-28-2019, 12:40 PM   #29
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Chances are FCA couldnít make the numbers work.

The bottom line is FCA needs the 2.0 to work for US CAFE and overseas engine displacement reasons, so it must have figured removing eTorque was the path of least resistance. The part I still donít get is why offer it on Saharas.

Part of the decision may be due to recent relaxation of some of the regulations and fines.
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Old 11-29-2019, 11:32 AM   #30
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Chances are FCA couldnít make the numbers work.

Jeep started offering the 2.0T with eTorque in 2018 as a $1,000 option, but they just sat on dealer lots unsold.

Either FCA did a poor job of articulating eTorqueís benefits to consumers, or consumers werenít convinced eTorque was worth the extra money, or Jeep buyers donít trust FCA with such new technology.

The bottom line is FCA needs the 2.0 to work for US CAFE and overseas engine displacement reasons, so it must have figured removing eTorque was the path of least resistance. The part I still donít get is why offer it on Saharas.
Jeep introduced the eTorque in 2019. 2018's had turbo, but no etorque. Regardless though, here in Canada they seem to sell really well. For Saharas the 2L eTorque was removed for 2020, but eTorque was added to the V6. The only answer given was "there was a complication with the 2L turbo". There is not even an option to have it added as a factory build. Though I could be wrong, that doesn't sound like lack of sales to me.

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