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Hi Folks,
Ive been really wanting to purchase a 2018 JGC with the Motori diesel. Dealer just told me that I should reconsider due to engine issues. I did some looking around on the internet and found mention of blown engines around 30K miles because of mains coming loose. Anyone heaerd of this? Should I steer clear of the newer motori diesels?? Not sure what to do now.
 

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The biggest thing I think you need to consider is if the local dealership(s) in your area will know how to work on the engine if something needs to be done. I have a 2014 with about 48000 miles now and have had no engine problems, though I have had a number of other issues. I would suggest looking into the cost of the extended warranty if you do purchase it. I purchased one with mine and it just paid for itself a few weeks ago when I had to have the steering rack and pinion replaced.
 

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The biggest thing I think you need to consider is if the local dealership(s) in your area will know how to work on the engine if something needs to be done. I have a 2014 with about 48000 miles now and have had no engine problems, though I have had a number of other issues. I would suggest looking into the cost of the extended warranty if you do purchase it. I purchased one with mine and it just paid for itself a few weeks ago when I had to have the steering rack and pinion replaced.
Thanks for the quick reply Casey! I will definitely ask them about the extended warranty. Will post updates!
 

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Hello there! I just wanted to pitch in with my xp and $0.02. I really don't understand why people are so put off by this engine. I think it's like the reviews on yelp or Google where if service or delivery is as expected (good) , then the customer doesn't feel the need to leave a rating/review. However, if anything is not to their liking or doesn't meet expectations then they feel the need to leave a review. So something that has a failure rate of 1/1,000 or 1/10,000 or 1/50,000 THAT'S the only review posted.

That being said, I own a '14 ecodiesel limited with the off road package (rear locker + metal skid plates) and have had zero issues. It currently has 115,898 miles on it and I drive around 600mi/week for work and pleasure. After just 8k miles I decided I needed the gde tune. Not only is it more responsive with more power, it has substantially more mpg. It's also my opinion that it will increase the longevity of the engine and components after reading up on the specific changes made with the tune.

I regularly get 31-32mpg hypermiling down the freeway at 65mph with winter rated all season tires. My previous summer eco tires gave me about 3-4 more mpg. If I drive aggressively, it's down to around 26-28mpg. Around town, I can easily burn rubber from a standstill on multiple tires.

I have no doubt that the gasoline v6 or especially the v8 would be up to the task of propelling this behemoth, but not without expending a lot of fuel. The diesel is a fantastically efficient engine and I expect many more years out of mine. It's a wonderful feeling rescuing people off road, playing up in the snowy hills, towing my racecar, towing my friends massive travel trailer, and taking it on long trips while cocooned in comfort with my wife and kids, all while getting insane mpg's.

Don't be put off from this engine. I see them everywhere here in Oregon, but mostly in the Ram Pickups. The major inconvenience is the DEF which they claim needs filled with every oil change. My experience has been it needs filled every 6k-8k miles, but that might just be the tune. The most annoying thing about this engine is the turbo lag. Yes, it's better with the GDE tune but is still a complete menace at times. I think it's mostly the trans being in the wrong gear and being an 8 speed, takes time to drop down 3-4 gears. I know it would be better with a transmission tune from GDE, but I have another kid on the way and they take precedence.

Other than my jeep acting funny and stalling randomly, there was no warning when the fuel filters needed changing. The error message on the instrument cluster read "service electronic throttle control" right as it would stall. The forums were no help at the time, so it took me months to figure out. Other than that, I have had literally zero issues. I do all maintenance at the recommended intervals. If you take care of it, it will last for decades. Just remember, it was an engine designed for fuel efficiency and quietness; it's not a cummins. It was reworked to provide enough towing capacity and in turn making it more robust for Chrysler. You don't need to baby it, but it was never meant to be worked hard 100% of the time like a cummins.

If you're on the fence about buying one, just get it. If you don't like it... sell it. Diesels hold their value better than the gas versions, and there's a reason for it. You'll recoup most of the $ you shell out during the purchase if you sell quickly, assuming diesel prices don't go through the roof.
 

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Hello there! I just wanted to pitch in with my xp and $0.02. I really don't understand why people are so put off by this engine. I think it's like the reviews on yelp or Google where if service or delivery is as expected (good) , then the customer doesn't feel the need to leave a rating/review. However, if anything is not to their liking or doesn't meet expectations then they feel the need to leave a review. So something that has a failure rate of 1/1,000 or 1/10,000 or 1/50,000 THAT'S the only review posted.

That being said, I own a '14 ecodiesel limited with the off road package (rear locker + metal skid plates) and have had zero issues. It currently has 115,898 miles on it and I drive around 600mi/week for work and pleasure. After just 8k miles I decided I needed the gde tune. Not only is it more responsive with more power, it has substantially more mpg. It's also my opinion that it will increase the longevity of the engine and components after reading up on the specific changes made with the tune.

I regularly get 31-32mpg hypermiling down the freeway at 65mph with winter rated all season tires. My previous summer eco tires gave me about 3-4 more mpg. If I drive aggressively, it's down to around 26-28mpg. Around town, I can easily burn rubber from a standstill on multiple tires.

I have no doubt that the gasoline v6 or especially the v8 would be up to the task of propelling this behemoth, but not without expending a lot of fuel. The diesel is a fantastically efficient engine and I expect many more years out of mine. It's a wonderful feeling rescuing people off road, playing up in the snowy hills, towing my racecar, towing my friends massive travel trailer, and taking it on long trips while cocooned in comfort with my wife and kids, all while getting insane mpg's.

Don't be put off from this engine. I see them everywhere here in Oregon, but mostly in the Ram Pickups. The major inconvenience is the DEF which they claim needs filled with every oil change. My experience has been it needs filled every 6k-8k miles, but that might just be the tune. The most annoying thing about this engine is the turbo lag. Yes, it's better with the GDE tune but is still a complete menace at times. I think it's mostly the trans being in the wrong gear and being an 8 speed, takes time to drop down 3-4 gears. I know it would be better with a transmission tune from GDE, but I have another kid on the way and they take precedence.

Other than my jeep acting funny and stalling randomly, there was no warning when the fuel filters needed changing. The error message on the instrument cluster read "service electronic throttle control" right as it would stall. The forums were no help at the time, so it took me months to figure out. Other than that, I have had literally zero issues. I do all maintenance at the recommended intervals. If you take care of it, it will last for decades. Just remember, it was an engine designed for fuel efficiency and quietness; it's not a cummins. It was reworked to provide enough towing capacity and in turn making it more robust for Chrysler. You don't need to baby it, but it was never meant to be worked hard 100% of the time like a cummins.

If you're on the fence about buying one, just get it. If you don't like it... sell it. Diesels hold their value better than the gas versions, and there's a reason for it. You'll recoup most of the $ you shell out during the purchase if you sell quickly, assuming diesel prices don't go through the roof.
Consider yourself a lucky one! I’m looking for a replacement engine for my decked out 2014 J GC. No diesel that’s been taken care of should self-explode for no reason until over 300,000 miles. Fiat / Jeep is now untrustworthy because they knew these engines were problematic- they stopped making them, but not before soo many of us were hosed! I think Fiat is trying to wait out the storm and hope no one convinces a law firm to press a class action law suit. Jeep led me on as if they were going to fix my car. Now they say that’s not happening because I didn’t buy it new and I didn’t have all my maintenance done at the incompetent dealer near me!
So I’m warning everybody. Unless you have an extra $20,000 just resting somewhere, DON’T buy a Jeep!
I need an engine for mine (EC393550), if anyone has any leads... 2014 J GC eco-diesel.
 

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Hello there! I just wanted to pitch in with my xp and $0.02. I really don't understand why people are so put off by this engine. I think it's like the reviews on yelp or Google where if service or delivery is as expected (good) , then the customer doesn't feel the need to leave a rating/review. However, if anything is not to their liking or doesn't meet expectations then they feel the need to leave a review. So something that has a failure rate of 1/1,000 or 1/10,000 or 1/50,000 THAT'S the only review posted.

That being said, I own a '14 ecodiesel limited with the off road package (rear locker + metal skid plates) and have had zero issues. It currently has 115,898 miles on it and I drive around 600mi/week for work and pleasure. After just 8k miles I decided I needed the gde tune. Not only is it more responsive with more power, it has substantially more mpg. It's also my opinion that it will increase the longevity of the engine and components after reading up on the specific changes made with the tune.

I regularly get 31-32mpg hypermiling down the freeway at 65mph with winter rated all season tires. My previous summer eco tires gave me about 3-4 more mpg. If I drive aggressively, it's down to around 26-28mpg. Around town, I can easily burn rubber from a standstill on multiple tires.

I have no doubt that the gasoline v6 or especially the v8 would be up to the task of propelling this behemoth, but not without expending a lot of fuel. The diesel is a fantastically efficient engine and I expect many more years out of mine. It's a wonderful feeling rescuing people off road, playing up in the snowy hills, towing my racecar, towing my friends massive travel trailer, and taking it on long trips while cocooned in comfort with my wife and kids, all while getting insane mpg's.

Don't be put off from this engine. I see them everywhere here in Oregon, but mostly in the Ram Pickups. The major inconvenience is the DEF which they claim needs filled with every oil change. My experience has been it needs filled every 6k-8k miles, but that might just be the tune. The most annoying thing about this engine is the turbo lag. Yes, it's better with the GDE tune but is still a complete menace at times. I think it's mostly the trans being in the wrong gear and being an 8 speed, takes time to drop down 3-4 gears. I know it would be better with a transmission tune from GDE, but I have another kid on the way and they take precedence.

Other than my jeep acting funny and stalling randomly, there was no warning when the fuel filters needed changing. The error message on the instrument cluster read "service electronic throttle control" right as it would stall. The forums were no help at the time, so it took me months to figure out. Other than that, I have had literally zero issues. I do all maintenance at the recommended intervals. If you take care of it, it will last for decades. Just remember, it was an engine designed for fuel efficiency and quietness; it's not a cummins. It was reworked to provide enough towing capacity and in turn making it more robust for Chrysler. You don't need to baby it, but it was never meant to be worked hard 100% of the time like a cummins.

If you're on the fence about buying one, just get it. If you don't like it... sell it. Diesels hold their value better than the gas versions, and there's a reason for it. You'll recoup most of the $ you shell out during the purchase if you sell quickly, assuming diesel prices don't go through the roof.
My experience with a 2015 Summit we bought used last year has been similar, though we've only put about 9K miles on it. The AEM had a small effect on drivability and I am looking at a GDE Engine & Transmission Tune, but it's running fine. Like you, on long highway trips, I got in the low 30s mileage with the OEM tires that I'll be replacing soon.

Just by observation, it seems like most of the people with issues have owned 2014 models. I'd be curious if there are other correlations between issues these people have had and their own driving styles, environment, etc... Is there a pattern?

I'm actually a little more concerned about the longevity of the air suspension than the engine.
 
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