Gas Mileage

[Alex Barsanti]

I might have a heavy foot. Over the course of 5200+ miles I'm averaging just over 18 mpg...

 

[MerlintheMad]

I might have a heavy foot. Over the course of 5200+ miles I'm averaging just over 18 mpg...

You have a heavy foot. But there others on here with worse average miles per gallon.

 

[Alex Barsanti]

You have a heavy foot. But there others on here with worse average miles per gallon.

Fortunately, my girlfriend helps me maintain that average mpg. If it was me alone, I’d be a bit less. I don’t commute with it though. I’m sure if that were the case I’d have better numbers.

 

[Ph03N1X]

So, I'm reviving this thread cause I have a question. I have a 2.0T Premium. My normal commute is about 12 miles in heavy stop and go traffic near DC. Avg speed is usually about 28 mph. I can usually barely get 20 mpg on that ride in the morning. In the afternoon/evening sometimes the traffic is lighter and then my mileage is more like 24. I know i can get good mileage cause on long interstate cruising i get high 20s, even low 30s without much difficulty. Just trying to understand why my mileage is so low in heavy traffic. I know it will be worse but I didn't really think it would be that much worse. I drive in Smart mode (eco) or I use Eco when on cruise control. Anyone else having performance like this in heavy traffic?

 

[eflyguy]

Yes. That's normal for any hydrocarbon-fueled vehicle.

 

[TwiceStung]

So, I'm reviving this thread cause I have a question. I have a 2.0T Premium. My normal commute is about 12 miles in heavy stop and go traffic near DC. Avg speed is usually about 28 mph. I can usually barely get 20 mpg on that ride in the morning. In the afternoon/evening sometimes the traffic is lighter and then my mileage is more like 24. I know i can get good mileage cause on long interstate cruising i get high 20s, even low 30s without much difficulty. Just trying to understand why my mileage is so low in heavy traffic. I know it will be worse but I didn't really think it would be that much worse. I drive in Smart mode (eco) or I use Eco when on cruise control. Anyone else having performance like this in heavy traffic?

I have the same car. Everyday combination driving is mid-20's. Freeway cruising at 75-80 is 30+ (highest calculated summer mileage was 34). Fortunately I do not deal with stop and go traffic since I work from home but I imagine very low 20's would be normal, maybe even optimistic.

 

[Ph03N1X]

Ok. Good to know I'm not alone. But definitely a little disappointing. I love the car and how it performs when I push it but I was hoping for more consistent 20s for daily driving. Granted I have an absolute trash drive. And it is winter. And I am only using regular (87) gas at the moment.

 

[TwiceStung]

Ok. Good to know I'm not alone. But definitely a little disappointing. I love the car and how it performs when I push it but I was hoping for more consistent 20s for daily driving. Granted I have an absolute trash drive. And it is winter. And I am only using regular (87) gas at the moment.

Get a pedal tuner from BMS. It will make you think you have the 3.3. lol

I use 93 octane, have sticky Nokian tires, RWD, and yes it is winter. My numbers were for summer when I do more driving.

 

[eflyguy]

I am only using regular (87) gas

Higher octane will not give higher mileage.

 

[Rob M]

Note that the stops are relatively short (none greater than 38s). Therefore, EPA estimates for city driving are not applicable to what many of us consider urban driving. According to the National Association of City Transportation Officials, the perfect amount of time for a light to remain red is between 60 and 90s. That means that, ideally, an urban driver would spend an average of 75 seconds waiting at each red light. Therefore, the US EPA estimate for city mpg is not at all representative of a city like Washington. It's more relevant to driving through a small town with a handful of red lights and stop signs to navigate. You live in/near any major city and 2.2L Stinger 22 mpg becomes a fantasy as you wait 2 cycles to get through one major intersection.

 

[CKeeler]

Higher octane will not give higher mileage.

I’ve always seen the opposite. It’s not much, but it’s more miles at least in my experience

 

[MisterMac]

I’ve always seen the opposite. It’s not much, but it’s more miles at least in my experience

Numerous studies show otherwise. Higher octane doesn't increase fuel economy.

 

[CKeeler]

Numerous studies show otherwise. Higher octane doesn't increase fuel economy.

Ain’t nothing like good ole fashioned real world results then huh?

 

[MisterMac]

Ain’t nothing like good ole fashioned real world results then huh?

Lol, waste your money.

 

[MerlintheMad]

Numerous studies show otherwise. Higher octane doesn't increase fuel economy.

But lower octane can reduce fuel economy.

 

[CKeeler]

The one time Merlin doesn’t try to counter point me. lol

 

[MisterMac]

But lower octane can reduce fuel economy.

Not in a vehicle tuned for regular, which the Stinger is. However, if you use premium in the Stinger, you might gain 7-8 up, but no change in MPG.

 

[eflyguy]

Higher octane simply allows the engine to operate at peak levels. It doesn't increase efficiency, and actually has less energy density.

 

[MerlintheMad]

Not in a vehicle tuned for regular, which the Stinger is. However, if you use premium in the Stinger, you might gain 7-8 up, but no change in MPG.

7-8 what up? I don't understand.

The Stinger is "tuned" for premium (91 octane and higher); that is why premium is recommended. The engine will not be hurt by running regular; it adjusts to lower octane (so it won't knock). That's why the manual says that reduced power and fuel economy may result from using regular gasoline.

 

[TwiceStung]

Not in a vehicle tuned for regular, which the Stinger is. However, if you use premium in the Stinger, you might gain 7-8 up, but no change in MPG.

Based on my annual mileage it costs me about $180 per year extra for 93 octane. Since I don’t drink coffee from Starbucks, or anywhere else for that matter, I’m even ahead of the game.

I have a heavy foot and when those pistons and turbos need to do their thing I’m always happy to have a kitty that purrs smoothly. It ain’t about the mpg’s.