Hi Guys, I Purchased 2014 GT last month and I am very worried about the gas consumption my GT is doing 12 mpg in city . I had 2010 before that and it was doing 15 to 16 mpg.

I talked to the service and they told me to drive more for some months and come back.

Is this normal for new car and would it get better with time?

 

Try doing a real test. Go to just about e. calculate your real miles and write down how much you put in. Computers mess up

 

I saw steady increases with time in my '08 Fusion (v6), '10 Mustang v6 and '10 Taurus... all purchased new. I bought the '12 GT with 7,500 miles and now have a bit over 20,000. Computer says the combined avg mpg is 23.5 (over several thousand miles now), and every now and then I'll see 23.6. Don't get excited yet.

 

Probably all in your driving habits.

For best economy you need to upshift early, by or before 2000 rpm and get it into 6th gear as soon as possible. And you can "skip-shift", skipping some mid range gears and go more directly into 6th, this can help too.

I just bought my '14 the other day and the mpg readout is on about 17 right now even with me playing with the new toy. Mine will lug itself around at 800 rpm in 6th just cruising with the 3.73's, cars with the 3.31's should still be able to lug around at 1000 rpm in 6th and that will get you better economy.

A heavy right foot and quick starts and stops are what kills fuel economy, drive it super easy and it will do much better.

This may not be the "FUN" way to go, but it is the fuel economy way to go.
_

 

All depends on how you drive it. I have done between 6-24 mpg in my last car. With the GT, you're moving 3600+ lbs (without you), with a good sized V8 engine (without direct injection). Easily could be down around 12mpg if you're sitting in traffic and in constant stop & go.

Typically mileage does get a bit better as the car is broken in as well

 

Agreed - I know I will never post on here complaining about mileage when I get the new car (unless I'm doing like 15 on the highway cruising at 70, where something would clearly be screwy). Bought the car to do one thing - go fast I'll drive my wife's Smart car to work sometimes for mileage...

 

Well I am driving very carefully from 15 days and trying my best to shift as early as possible but still its consuming like hell.

@Ltngdrvr your new one is doing great. My first week average was 10 mpg

With 12 mpg with city and lots of stop and start should i worried about it or should i take it to dealer?

 

2600 miles. 15.4mpg with 3.73s, all city.

 

I would double your efforts to drive it easier and see what happens. Lots of stops and starts are going to bring it down, is 12 too low for what you're doing? Hard to tell, best to just try some of the things I suggested and see if they help.

 

These 5.0 mills are pretty famous by now for sucking through gas pretty fast for the first 10,000 miles. I would average 12-14 in the city and 17-20 on the highway for the first 7,000 or so. Now, at 24,000 miles, it's about 18-20 in the city and 25-29 on the highway. It'll also go up as you get more used to driving the car.

 

I'm getting only 12 mpg, just like you, after around 300 miles. So as others have said, it must be a new car thing.

 

In 20,000 miles of testing the computer vs my own calculations, they were within 2% of each other so the computer is pretty darn good.

 

Of course the computer is good. When working correctly. Sometimes they simply don't

 

may I ask what state you are in and what has the temp been, cold, HOT?

93 or 87 octane gas?

 

Mine is 4 days since delivery and about 240 miles on it and the readout is sitting on 17.2 mpg right now so it must not be just a new car thing...




Your results are outside what most report, most report the dash readout as being short by 1 to 1.5 mpg.
_

 

Yeah, if you live in the great white north you may still be getting winter blend gas and mileage always is less on those blends.

 

15.4 city however 24.5 been avarage trough all the AZ commute in PHX area.

 

3200 miles so far, and my total average to date is 17.7
For about the last 1500 is 20.8... About 1200 of that highway miles
My first tank average was 8.6, and 10.3 with the first 2 tanks

 

well i am using regular fuel. My major problem is slow city driving and lots of start and stop.

Yesterday i did 20 kms and burned 5 litres .

Its in Toronto and temperature here is 20 c now a days.

 

Yeah; welcome to city driving the 5.0. As I've posted around here before, I get 13-16 mpg in city/suburb driving here in DC with mine (3.31 gears).

It jumps up to 25-26 on the highway, as rated, so there's nothing wrong with the car. Lots of short trips, with constant stop & go just isn't a good recipe for mpg.