I just thought I would give a quick report on my '11 STX. I purchased it on the evening of 12/30/10 and it had 69 miles on the ODO when I took it for a test drive. I run 87 octane Shell (E10) gas and I have averaged 18.42 mpg in combined driving. My best tank was 20.03 mpg in combined driving and the worst tank was 16.76 mpg in combined driving, using old school math and not the avg. computer.

I am enjoying the hp and torque the 5.0 has to offer. It is very responsve and I haven't had any issues concerning low end power, that numerous EB owner's say they experienced when test driving a 5.0 powered truck. I test drove an EB during the tour and enjoyed the SCrew FX4 that I drove. Although, I felt a truck that large was lacking in off the line power. This is the reason I decided to purchase a 5.0 and not an EB or 3.7L.

The Good:
1. Sharp looks, paint, 18" wheels.
2. Plenty of power in town and on the highway.
3. Good mileage vs. HP/Torque.
4. Factory exhaust sounds good.
5. Comfortable interior.
6. SYNC and Communications Package.

The Bad:
1. The dash is a little to plain jane.
2. Ford should have designed an oil dipstick extension for the F150. The dipstick is a little difficult to get to and I am 6'2" tall. I found that it is easier for me to ensure a scratch free fender by accessing the dipstick from over the radiator core.
3. The stereo sounds terrible.
4. An unknown, intermittent plastic sounding rattle coming from the front passenger seat area.
5. The drivers front door window has a squeek (on bumpy surfaces) that comes from the window track, after it rains. Wipe the rain off the glass and the squeek goes away.
6. The passenger front seat shakes horribly above 35 mph on a smooth surface. It increases with speed and/or bumpy surfaces. I can actually hear it shaking with the stereo turned off.
7. No overhead console. Not sure if it is due to the SYNC speaker on the headliner or not.
8. The center console is missing. My '07.5 STX SCab had an overhead and a center seat console/armrest.

Current Mods:
1. Extang Black Max soft tonneau.
2. AVS Aeroskin Hood Protector.
3. 12" SS Gibson Exhaust Tip.
4. (4) Kenwood KFC-6879ie speakers.

Future Mods:
1. Window Tint.
2. Carpet Kit and Floor Mats.
3. PTM (SS or Pewter) front door window switch panels.
4. PTM (SS or Pewter) rear door speaker grills.
5. PTM (Aluminum) AC vent surround.
6. 3M Clear Bra for front bumper.
7. Lower bumper grill insert.
8. Install a 2009/2010 Center console.

I think that cover's the first 3,000 miles on my 2011 STX.

 

I believe that this is a drive by wire issue not a low end torque issue. Some 5.4 owners who have test driven the 5.0 report the same thing. Just checking dyno charts for the the 5.0 shows it has the goods down low.
Mike @ five star tuning notes and addresses this issue in his tune. http://www.5startuning.com/page80/page80.html
"Drive By Wire
The F150 5.0L suffers from slow throttle response down low. By correcting this issue and a few others; improvements will be much better throttle response, step on go pedal, vehicle will respond quicker...this DBW system is a torque driven system, it works by taking a certain amount of torque via engine and wheel and applies it to what the driver foot say it needs; a better way to explain it is its a torque limiter. It only allows so much torque at a given pedal position. Stock tables are conservative and numb at best and that's why one would feel some times a lag or a goofy pedal with DBW systems. For a 5.0L V8 this is one of the most critical areas that must be addressed and modified to generate more torque /hp and throttle response. By reworking the OEM strategies makes your 5.0L V8 come alive."

 

My last F150 had the above DBW issue and it took a SuperChips Programmer to correct it. No problems with my 5.0L.

 

Great to hear youre gettin that good of MPGs. Really hopin I can get into a 5.0 soon.

 

eco boost has turbo lag hahahahaha go figure

 

oh i dont want to scare you either but i have a nasty clicking/grid noise at full left lock and hit a small bumb

 

Your MPG's are making me sad. They are good for you but I'm getting a consistant 19mpg with the 3.7. I have a regular cab to boot. Carrying the additional 4X4 weight and the 3.73 are hurting my highway MPG's.

Glad to hear that you are generally happy with your truck. I'm happy with my V6 too, but if I'm going to get the same MPG as the 5.0, it defeates the purpose of having a V6.

 

What brand gas are you using? I run Shell and have the 18" wheel package with the tires set at 37 psic.

 

I generally run Sunoco, though with about 1600mi so far, I cannot say that every fill up was Sunoco.

I have the same wheels as you, but tires for the 4X4. I'll try to up the pressure a bit, but I'll bet that the tread adds more rolling resistence.

I just checked out your gallery to check out the wheels more closely, that is one nice truck.

If I had been buying a 4X2, which is what I'd prefer but isn't as practical for me at this time, I may have opted for a truck like yours, with the 5.0. I'm more into the "sport truck" but this time around what I needed is a little more ground clearance, the ability to drive all four wheels on occasion, and fuel economy similar to what the Edge was delivering.

 

Thanks, I do like the wheels. Someday I'll get energetic and post a few pic's of my Gen. 1 Lightning.

 

All Sunoco is 10% ethanol everywhere.

 

I have been getting mixed reviews between the mpg of the 5.0 and the 3.5 turbo.
Some claim to get only 18-20 mpg hwy with the 3.5s and I have driven the 5.0 often and have been getting better then that! I average on the computer 12.5L/100km (22.5mpg) on the hwy (70mph) and in the city with stop lights I have gotten no worse than 14.0L/100km (19mpg). I checked in at fueleconomy.gov and they are way out to lunch on the 5.0 (14city-19hwy). I don't have that heavy of foot but I don't drive like my grandma either so I am not sure where these numbers are coming from. How is everyone else making out with their 5.0's?

*note, fuel mpg has hardly changed from 20 miles - 5000 miles on the odometer

 

Check it by hand, the computer really isn't that accurate.....

 

That's Imperial gallons - miles per US gallon is 18.8. There's 3.785 liters per US gallon and 62 miles per 100 km. You are getting right at the EPA numbers.

 

I am doing really well with my mpg, but I drive it pretty easy most of the time. I am getting around 18mpg give or take .5 depending on my foot.