My commute consists of 80% highway and 20% light traffic city roads. This is a 6spd by the way. After a 4,250 mile road trip this summer with a healthy mix of highway and smaller city driving, I'm sure the car's just fine. When I'm on the highway I drive 5 over and use my cruise control. Did I mention that I love this car? What's killing me is I'm just using it for a commute, rarely get above 60 mph. However, I can't say no to the new body style. Spark plugs are easy to pull minus rear ones , air filter is easy as well.
Mine didn't throw a code -- just warped the front rotors and created a lot of obvious drag. Let off the gas the moment you see a red light in the distance, just generally take it easy and try to avoid hard brakes. Be helpful about spotting abuse and reporting it. However, i consider myself an ethusiast and have modified it and plan to do more modifications. I was so excited, I took a picture: Just another reason I love this car. It's a 2002 automatic convertible. Sure shallower gears may net you a bit of fuel efficiency on the highway but it would make the car a dog to drive around town and could hurt fuel efficiency around town as well.
The worst fuel economy I've gotten so far since the blower was about 16 mpg, all city. When uploading a photo, always give context. The gas you burn doesn't really matter; the V6 doesn't run enough compression stock, if you've chipped it that's another matter entirely for a higher octane rating to improve ignition timing. Only has 56k miles on it. So im sure the EcoNoost is capable of having fun. I usually get 21-22mpg in my mixed commute, and I always have the gas on the floor at some point during the drive. A fair average number of red light stops for me is maybe 2-3.
You need a tuneup of some sort for sure but to what extent that is the question. This was a long time ago. That's what uses your gas up the worst. You'll see much better mileage at 55mph than at 80mph, simply because higher speeds bring more wind resistance. Tell us where you spotted it.
If your car is bone stock it might have the paper filter still but typically they have been changed to a reuseable one. I would say at least check the plugs but it probably wouldn't hurt for peace of mind. You could do a tune up like new plugs, air filter, fuel filter, oil change, and hell even sea foam the car to get rid of the carbon deposits. I'll be due for an oil change in about a month, and a state emissions check. Not sure where the older cars' sweet spot is though.
For improvements though: Driving style: first of all as others have said, drive with a light foot and accelerate slowly. Oh and btw this was done with premium grade and just city driving!!! And that isn't good for gas mileage. I'd drive both and see what fits for you. The best things you can do are either accept it, or get something else. I drove to California and averaged about 20 mpg for the week including city driving in San Francisco and Bay Area freeway driving. While we truly believe that the Mustang is and will always be the greatest pony car, this is no excuse to ignore Rule 1 and bash someone else's choice. If you need more, time to start shopping.
This was with a new cold air intake, new wiring and spark plugs, and a new coil pack on my 2007 v6 mustang. How are you measuring your fuel economy? Nobody buys a Mustang for fuel economy, but they actually do pretty well if you drive like a reasonable person. This is all keeping in mind that I do mostly highway driving. Do you know anything about the previous owner's maintence? No, it is just unique to my commute if I only drive to and from work. If you're on the highway drive at 65mph.
All are welcome, regardless of year or engine size! I've upgraded the air filter, my tires are at the right pressure, etc. New rear axle gears I have 3. I've owned the car since March. Then I got a block made of aluminum that replaces the main unit -- which last I checked was a 800 dollar dealer item. Whipping around turns is silly, it's a waste of tire and too many people around to do it safely. Edit: I apparently can't read and didn't see that you weren't the original commenter.