WXman

The EPA revised the test format a few years ago and window stickers are extremely accurate now in my experience with multiple vehicles.

When is running an engine while stopped a bad thing? When you don't want 5 miles per gallon less fuel economy. Duh.

Truckin

iTrader: (4)

depends how you drive and conditions. Race it around, uphill, towing or windy day..its bad. Drive like me? My average with 34x12 tires is 23...was 25 stock tires. I drive conservative, I'm old

rrp0968

We will just have to wait and see I guess, unless some of the 3.5 Eco guys want to chime in.

When the 5.0 gets S/S, we will see real world difference with and without.

And there is no way idling at a stop is going to knock 5 mpg off of the real world mpg, unless it is idled for hours.

SteveLord

Sure, but that can apply to any vehicle. But it has nothing to do with my post about the original 2.7 hype (circlejerk) and the numbers originally released by the EPA. Still a great engine by Ford don't get me wrong.

Masi1926

Now that I'm properly informed, I wish I could forget I asked that question...

Now that I am armed with said knowledge.. and also now that they finally took the wraps off of the 5.0's HP & Torque #s for 2018. Exactly the numbers I was hoping for.
400 HP even, would've been nice bragging rights, but I'm very okay with 395!

I'm back to my original plan. I just wish, i didn't love my 14 so damn much.

byoungblood

Actually, the last vehicle I owned that had it, the auto stop made one of the biggest differences in the mileage you'd get, particularly if you do a lot of urban/suburban driving. It wouldn't work if the A/C was running, so you could observe the effect of it fairly easily. It probably dropped mileage by at least 5% or so if it didn't shut the engine off.

WXman

It does on my truck. I took a long trip last week and got 20 MPG constantly moving. On the flip side, my weekly commute is 50/50 city/highway and I average 15 to 15.5 every tank. ANY stopping and idling around town destroys the MPGs on these trucks, or any truck for that matter.

I wonder if those Coyote numbers are on 87 octane? If so, the E85 will put it at 410 HP or so. The Mustang version is going to 455 HP to match the Camaro SS. Great time to be alive. Never thought we'd see this again after the mid-2000s fuel crisis.

Yep, it just makes sense. If you watch the "instant MPG" meter on our trucks, it's obviously zero while stopped. So every second you're stopped with the engine running, you'll pulling your average MPG down at a rapid pace.

rrp0968

That makes no sense at all. You said you get 20 MPG constantly moving, where the start stop has no effect at all and 15 - 15.5 in stop and go traffic. Show me a 5 MPG difference in stop and go traffic only, with and without start stop.

I can easily obtain the numbers above in my 2013 F150 with a 5.0 and no start stop.

Koolponycar

They can keep their s/s feature and I hope they don't go to the 4 cylinder deactivation like the chevys. I rented a jeep that had the s/s and I hated it, even though I could turn it off. What if you go to make a turn and that thing malfunctions and shuts you down in traffic? Is that possible. I love my 2012 5.0 and don't want that. My wife just got a new Raf4 and it doesn't have that crap as far as I can tell. I guess its for heavier gas users like v-8's.

Masi1926

What he said.↑ Just give me strong uninterrupted V8 power and I'm happy!
I'm still happy as hell with my 14, 5.0 and a 6 speed.
Never mind 395 and a 10 speed.

You're so right. I never in a million years thought we see these kinds of horse power numbers.