Gas Mileage on 2025 Turbo I-6?

BossHogg said:

I recently watched a TFL episode where they compared a Hurrican RAM Rebel to a GMC 1500 6.2L Sierra and the Ford F150 Tremor with a Coyote engine. They took all three on a 100-plus mile driving loop. I expected more from the Hurricane, but the Coyote engine beat the Hurricane by 2 MPG.

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I didn't like this comparison. 3.92 Ram with others being 3.42 and 3.21 something gear ratios... And the Ram was designed to run on regular 87 octane as well. Run similar geared trucks with the cheap fuel and lets see what happens.
To be honest, I would rather them take normal $50k truck trim levels and do these tests (someone in here mentioned that too). Most truck owners aren't going to be buying the $70-80K trim levels. Do the normal working man's truck haha. The $80k half ton truck owners aren't gonna care about gas mileage.

carlylelocke said:

I didn't like this comparison. 3.92 Ram with others being 3.42 and 3.21 something gear ratios... And the Ram was designed to run on regular 87 octane as well. Run similar geared trucks with the cheap fuel and lets see what happens.
To be honest, I would rather them take normal $50k truck trim levels and do these tests (someone in here mentioned that too). Most truck owners aren't going to be buying the $70-80K trim levels. Do the normal working man's truck haha. The $80k half ton truck owners aren't gonna care about gas mileage.

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TFL always does mixed reviews, and it drives me nuts. They're never apples to apples. Like the towing tests they rarely ever use the same trailer/load.

AlexC2350 said:

I can’t believe, I mean I’m just flabbergasted that the 5.7 hemi is gone and not even so much as offered to save basically nothing on fuel?!? Replaced with a more complicated, and expensive, albeit more powerful engine. At least ford and Chevy offer a V8 option.

I had a 17 bighorn with 3.21s that regularly would average 21 mpg on a tank of fuel for my work commute. Hand calculated.

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When car manufacturers are forced into doing such, believe it

U&A said:

When car manufacturers are forced into doing such, believe it

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They weren't forced by anyone other than themselves. FCA created their own problems by stuffing the 5.7 in to damn near every vehicle they produced. If they would have kept it to just a few cars and the trucks they'd still have a V8. But, no, HEMI ALL THE THINGS! Ford and GM didn't stuff a 5.0 or LS in everything they make, so they didn't have to buy carbon credits to compensate.

Riccochet said:

They weren't forced by anyone other than themselves. FCA created their own problems by stuffing the 5.7 in to damn near every vehicle they produced. If they would have kept it to just a few cars and the trucks they'd still have a V8. But, no, HEMI ALL THE THINGS! Ford and GM didn't stuff a 5.0 or LS in everything they make, so they didn't have to buy carbon credits to compensate.

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And they continued to put R&D money into their drive trains...

U&A said:

When car manufacturers are forced into doing such, believe it

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Oh yeah it’s definitely not the market that dictates this.

Another aside, GM went to premium only in the bigger LS motor. Premium fuel reduces emissions and increases economy (marginally) in vehicles that are designed to take advantage of it. I somewhat wonder what a 91+ only hemi would have looked like. Also, maybe if the HP wars had refocused a bit on range and economy. I'll always take more power, don't get me wrong, but I've never felt like any modern truck was underpowered. Another 10% hp, meh. Another 10% useable lifespan and 10% better fuel economy at current power level? I'll take that one.

From the looks of it I made the right decision to buy my '22 with a Hemi. I'm not getting rid of this truck for a very long time. The Hurricane just isn't thrilling me right now.

Docwagon1776 said:

Not more efficient, no, quite the opposite. Simply injecting less fuel per cycle because, if not, the computer will detect it's running too rich due to the thinner air. As you said, it's not a hill climb, they don't need that much power to maintain speed, so the reduced hp is irrelevant. It would probably start to flip if they were towing heavy or otherwise needing more power where the forced induction's edge in efficiency would show up more.

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I stated things poorly. What I should have said is that the RAM is cruising on the E-470 at ~ 70 mph on relatively level ground. This would require 25 - 30 HP. It should not be using boost from the turbo - the 3.0L can handle that without boost. At that point the Hurricane is effectively a NA engine. At that point it should have an advantage over the V8's.

Docwagon1776 said:

It's still good info. Buyers of these trucks are still going to use them on the highway the vast majority of the time, if not all the time. I take my PW off road, but I may drive 5-24 hours to get to where I want to do that. If I was only concerned about offroad, I'd have bought a TJ Jeep...

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I agree that the comparison is valid for people looking for off road trims. What I disagree with is blaming the Hurricane for the poor fuel mileage. Based on the fuelly data, the poor fuel economy is a result of the Rebel chassis/gearing. I believe the Hemi would have performed the same (or worse).

Turning things around - If I lived in Denver (or at altitude), I would absolutely want a blown engine to compensate. The Ford and GMC will loose ~ 70 HP at 5000 feet. That's not a huge deal when you start with 420 HP. Add a trailer and another 5000 feet and you start to feel it.

I'm not sold on the Hurricane - but I'm not hating it either. There are a lot of extremely good blown inline sixes out there. Time will tell whether the Hurricane is one of them

20IndyRam said:

I agree that the comparison is valid for people looking for off road trims. What I disagree with is blaming the Hurricane for the poor fuel mileage. Based on the fuelly data, the poor fuel economy is a result of the Rebel chassis/gearing. I believe the Hemi would have performed the same (or worse).

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I'm not really blaming the Hurricane, just wondering what differences would look like at a more sea level sort of playing field. I hope it's a great engine, but I'm not beta testing it. If I were buying a new 1/2 ton off road oriented truck today, it would be the Tremor.