DB ST

Basically what I said, just said differently. Lol.

EPA estimated highway mileage isn’t tested anywhere near 75mph. More like 55mph. Having a vehicle with the aerodynamics of a brick is not conducive to getting good gas mileage at high speeds.

Thanks for the details. If I remember correctly, MT ran a 14.7 and C&D ran a 14.3. It’s nice to know what sport mode, traction control off, and 93 octane do. I wouldn’t be surprised if Ford programmed a torque reduction by means of reducing boost and/or timing to prevent hard launches being the reason your different launch techniques didn’t show better results.

Going from 26mpg (87) to 28mpg (93) I calculated $0.098 per mile with 87 vs $0.112 per mile with 93. The power difference is not huge, but noticeable. On another note, I noticed that I started getting full boost at 850 miles on the odometer. Prior to that, it wouldn’t go above 5psi.

The lifetime mpg of my Edge so far has been 24mpg when including the 50-something miles on it before I bought it and remote starting/warm up during cold weather.

For my third fill up I decided to try 93 octane. The temps have been between 60F and 70F. This is the result after driving to and from work (34 total miles). Driving to work this morning, an additional 17 miles, I’m at 28.2mpg. I’m amazed at what I am getting with warmer temps and 93.

Apparently quoting is not working for me right now ... Jamie, When you get an opportunity, see if you can find some long flat roads at 35, 45, and 55mph. Set the cruise control to those speeds and (with a warm engine) see what the instant fuel mileage reading says. Mine pegs 40mpg at 35 and 45. 55mph I am usually around 35mpg. 65 is usually right around 26-28mpg. After 65, this 4500lb brick’s gas mileage proceeds to fall off a cliff. If your readings aren’t somewhat close to mine, all I can think of is that the O2 sensors in your car are somehow not calibrated correctly, but I find that extremely unlikely. I don’t know for sure, but I don’t believe the trip mpg readings takes remote start/warmup into account. So it may say you are getting better gas mileage when you let your car warm up than you are actually getting. It wouldn’t be putting the 5 minutes of burning gas at 0mpg into the equation. As far as turbo engines and gas mileage go, the mpg benefit is only there when you are not in boost. Once you hit boost, you are guzzling gas just like a larger engine.

i think we can all agree that those temps are outliers when speaking generally. But yes, I do live in a climate that gets that cold on occasion. The coldest i’ve ever seen my garage was 0C, and that was once when it was with the temps in the -25 range (-15F).

Black is the fastest color, but when it is sunny out. The heat absorbed by black paint heats up a thin layer of the surrounding air making it ever-so-slightly less dense. ?

First thing i’d do is stop letting the car idle for so long. There is no benefit to letting the car sit and idle for more than 10-15 seconds. All you really need is for oil to get moving. Try using cruise control whenever possible. As as far as the Focus ST, that engine was pushing a more aerodynamic car with 1,300lbs, 2 cylinders and .7l less than the Edge. Frequent short trips sound like the main killer though. I don’t believe EPA estimates take into account engine warm up. At 10 minutes long, it takes 1/2 your trip for the car to hit operating temps.

How would you describe your average trip? For instance, my drive to work is 16.5 miles and about 22 minutes. The engine is usually up to temp in about 5 minutes. The speed varies from 25 to 65mph, but mostly 45-55mph (good mpg speeds).

The notion of a break in period is mostly a remnant from the past. Engines are made to tighter tolerances, better bore surface finish, and better materials than in the past. The only engine i’ve ever “broke in” properly was when I got a forged short block for my Mustang years ago and that was only because it wasn’t a production engine. I’ve always driven my cars as I normally would with the only exception being not beating the hell out of it for a 1,000 miles. I’ve always gotten near the epa highway mileage and never once had an engine consume oil. As an engineer, if I felt that the engine break in was so important, I wouldn’t make a small note buried in the middle of the owners manual about it that few people read. I’d be writing it into the ecu and putting notices on the gage cluster or something similar.

Hello everyone. I just got my ST on 3/2. It’s got 401a, 21” rims, and cold weather package. I picked it up with 54 miles on it. I got 24.2mpg with the first tank of whatever octane gas the dealership filled it with. About 30% into the 2nd tank of gas (89 octane) I’m getting 26.7mpg. This is is my 5th EcoBoost engine. 2013 Fusion Titanium fwd 2.0 2016 Escape SE fwd 1.6 2017 Fusion Titanium fwd 2.0 2018 Escape Titanium 4wd 2.0 now the ST For reference, I’d get 27-30mpg in the Fusions depending on weather, so I’m pretty happy with 26.7mpg in the ST with the recent warmer weather. From my experience, using cruise control greatly benefits gas mileage no matter how steady your foot is with EcoBoost engines. Much more so than any n/a engine I’ve had.