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Ford Eco-boost 3.5 ltr

Posted on 12/13/23 at 2:41 pm
Posted by GWM
Member since Aug 2021
1565 posts
Posted on 12/13/23 at 2:41 pm
Who here has real world experience with this engine ? I've been a Chevy man for many years, but the power, and fuel mileage numbers are impressing me on the Ford 3.5s. Even the 5.0 Coyote numbers are impressive.

Looking for info regarding reliability, and actual fuel consumption.
Posted by Chad504boy
4 posts
Member since Feb 2005
166144 posts
Posted on 12/13/23 at 2:44 pm to
You’ll hear a lot of haters but I think ford is so invested in this motor that it must be pretty decent.
Posted by WHS
walker LA.
Member since Feb 2006
3096 posts
Posted on 12/13/23 at 2:45 pm to
My wife's expedition max has this engine and it will flat out run! The only problem is that ford has had many issues with the 10 speed transmission attached to it.
This post was edited on 12/13/23 at 2:46 pm
Posted by coonarse
Kingwood TX
Member since Nov 2007
374 posts
Posted on 12/13/23 at 2:45 pm to
Get the New 1/2 ton Chevy/GMC with the 3.0 Duramax. Just got back from a trip to W. Texas, loaded down doing 80 my buddy was getting 21-24 mpg
Posted by LNCHBOX
70448
Member since Jun 2009
84064 posts
Posted on 12/13/23 at 2:46 pm to
It's reliability was pretty meh when it first came out back in 2011 or whenever, but they seem to have the kinks worked out for the most part.

FWIW I have a 2015 Edge with the 2.7 Ecoboost, and it's over 188k miles on it with no issues.
Posted by goofball
Member since Mar 2015
16855 posts
Posted on 12/13/23 at 2:46 pm to
The earlier ones had some issues with the PVC system, timing, cam rattles, and carbon build up. They seem to have corrected most of that with the more recent 3.5L turbo motors to some extent. Same with the 2.7L. You should know that neither motor gets particularly good fuel economy over a V8. The smaller displacement turbo configuration is not to improve fuel economy over V8s - it's to reduce emissions. Keep that in mind if Ford wants to charge you a lot of extra cash for the 3.5L turbo motor.

The Ford 5.0L has recently gotten cylinder deactivation. It's the first version of it from Ford and nobody really knows how they'll last long term. The older 5.0's from 2019 or so have been pretty good, but those don't have the different cams with zero lift to shut down cylinders. Ford doesn't really do elaborate valve timing all that well, so I would wait a few more years for the 5.0L with the new heads to prove itself.

If you get the Ecoboost, your problem with Ford will more likely be with the 10 speed transmission that Ford pairs with all of them. That and with the multitude of sketchy vendor-sourced parts that Ford is scraping together to build these trucks since the pandemic. Ford is having major issues with recalls across the board. The likelihood of obtaining a lemon is very high with them right now.
This post was edited on 12/13/23 at 2:55 pm
Posted by tgrbaitn08
Member since Dec 2007
146214 posts
Posted on 12/13/23 at 2:48 pm to
quote:

Ford Eco-boost 3.5 ltr
Who here has real world experience with this engine ?


I had 2 of them and loved both of them until I got the 1500 GMC AT4 3.0 Duramax Diesel

I'll never drive another Ecoboost ever again and I really like both of them
Posted by goofball
Member since Mar 2015
16855 posts
Posted on 12/13/23 at 2:52 pm to
quote:

Get the New 1/2 ton Chevy/GMC with the 3.0 Duramax.


This is a legitimately good suggestion. But the OP will NOT find a good deal or discount on anything with the 3.0L Duramax.

A family member has an "old fart" spec Silverado (2 wheel drive, extended cab) with that motor. He uses it to tow their camper all the time now that he and his wife are retired. When it's not towing, he says he can get 30mpg+ on flat highway. It's not slow, but it's not really fast either.

That MPG benefit is enough of a difference over the gas motor to justify the added costs of DEF fluid and the oil pump belt that eventually has to be serviced.

The OP will probably find a good deal on a Ford or Chevy with their 2.7L turbo motors. In both cases they are solid engines if maintained. He will find an even better deal with a Titan or Ram with their V8 engines.
Posted by mwlewis
JeffCo
Member since Nov 2010
21210 posts
Posted on 12/13/23 at 2:52 pm to
The Ecoboost is a piece of shite motor. Avoid it no matter what. Even if the vehicle is free.
Posted by TulaneUVA
Member since Jun 2005
25884 posts
Posted on 12/13/23 at 2:52 pm to
I have 2012 model and it’s ok. Over time it’s lost fuel efficiency (15.5mpg on avg) and is laggier in response than I remember. But has otherwise been reliable. Have nearly 150k on vehicle
Posted by LSUSports247
Member since Apr 2007
643 posts
Posted on 12/13/23 at 2:53 pm to
I had 2013 and put 147k on it with no problems from the engine.

It’s been around for over 10 years now so I wouldn’t have any worries about it.
Posted by JohnnyT
Central Texas
Member since Feb 2005
1806 posts
Posted on 12/13/23 at 2:56 pm to
I can’t speak for the reliability of new 3.5s or the 10 speed transmission, but one of our vehicles is a 2013 with 240+ thousand miles. Outside of normal stuff the only issue we’ve had are three coils go out over the years. We don’t use it for towing often but it hasn’t disappointed when we do.
Posted by tgrbaitn08
Member since Dec 2007
146214 posts
Posted on 12/13/23 at 2:56 pm to
quote:

But the OP will NOT find a good deal or discount on anything with the 3.0L Duramax.


Nope...expect to pay sticker or even over sticker

I get 25-26mpg ....I've never gotten that kind of fuel milage on a truck and this is the probably my 9th or 8th truck in the past 20 years (3 Ecoboost, the rest V8's and this is my first diesel) and none of them even compare to this one
This post was edited on 12/13/23 at 3:00 pm
Posted by Dragula
Laguna Seca
Member since Jun 2020
4871 posts
Posted on 12/13/23 at 2:57 pm to
quote:

Ford Eco-boost 3.5 ltr


Ticking Time bomb ...
This post was edited on 12/13/23 at 2:59 pm
Posted by goofball
Member since Mar 2015
16855 posts
Posted on 12/13/23 at 2:57 pm to
quote:

The Ecoboost is a piece of shite motor. Avoid it no matter what. Even if the vehicle is free.


I freely admit that Ford is making a lot of hot garbage right now and I would absolutely buy almost any other brand of vehicle over Ford.

But the 2.7L Ecoboost is mostly a solid engine, especially since they added port fuel injection to circumvent the shitty PVC system it has. It doesn't really have the carbon build up issues anymore. And it never really had the shitty cam phaser problems that other Ford engines had (including the 3.5).

When it comes to the 2.7L turbo Ford - it's the rest of the truck that I'd worry about. Not the engine.
Posted by Roy Curado
Member since Jul 2021
968 posts
Posted on 12/13/23 at 2:58 pm to
Last 3 F-150s ive had were 3.5 EcoBoost. I have the "high output" one now and none have given me any major problems. I find them pretty quick and reliable. I have a 2.5" level and a lead foot. I average 14-16 mpg in the city. 17-19mpg on highway (I've hit 20 before). I also have 35" tires.
Posted by ccard257
Fort Worth, TX
Member since Oct 2012
1308 posts
Posted on 12/13/23 at 2:59 pm to
I have a 2013 with about 240k miles. I have really liked the engine. Pulls great, fun to drive, etc. Mileage sucks arse. I get 14.5-15 unless I have a tailwind and the only modifications I have done that affect mileage are removing the air dam and putting on LT tires.

I just got a 2021 with the V8. Not sure which one I like more yet and I haven't put a trailer on it to compare. Averaging 18 mpg so far and 20ish on longer trips.
Posted by goofball
Member since Mar 2015
16855 posts
Posted on 12/13/23 at 2:59 pm to
quote:

I get 25-26mpg ....I've never gotten that kind of fuel milage on a truck and this is the probably my 9th or 8th truck in the past 20 years and none of them even compare to this one


And yours is an AT4?

That's incredible since the AT4s are lifted, have knobby tires, 4x4, and crew cab. The 2 wheel drive ones without all that weight get even better MPG - closer to 30.
Posted by bgoodwin
Cullman, Al
Member since Sep 2011
589 posts
Posted on 12/13/23 at 3:01 pm to
Good friend of mine from Mobile has a 2012 F150 Ecoboost with just over 300k miles on it. ZERO issues other than 1 alternator and the transmission gave up a few months ago.
Posted by tgrbaitn08
Member since Dec 2007
146214 posts
Posted on 12/13/23 at 3:02 pm to
quote:

And yours is an AT4?

That's incredible since the AT4s are lifted, have knobby tires, 4x4, and crew cab. The 2 wheel drive ones without all that weight get even better MPG - closer to 30.

I leveled mine and I drive mostly hwy miles, so Im driving at 75-80 mph

plus I also have to drive around nola so I'm just give you an average
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