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post #1 of 17 Old 01-06-2016, 09:20 PM Thread Starter
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Sport mode

Has anyone done an analysis on mpg loss when driving in sport vs normal?

I've been driving in sport mode a bit lately and it's kind of addicting. I haven't noticed the fuel computer reporting much difference in mpg. But my mpg has dropped some with the cold weather, which isn't surprising.
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post #2 of 17 Old 01-10-2016, 10:58 AM
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I have too. Been playing around with the shifting paddles too. Yes fun and addicting. Makes my exhaust system sound better when I drive in sport mode due to higher rpm and down shifting. Don't have any numbers to back it up but I do notice the frequency of pumping at the station went up. But again to me it's common sense, if I press hard on my gas every time I drive Then I will be running on empty sooner.
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post #3 of 17 Old 01-10-2016, 11:08 AM
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I use Sport from time to time as well. Haven't noticed a drop in MPGs really.. If any drop, it's been negligible.
I like to use the paddle shifters too LOL!!

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post #4 of 17 Old 01-10-2016, 12:45 PM Thread Starter
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Thanks for the replies. Maybe I'll do an experiment over the next month or so and see if I can figure it out. Both with the car's reporting and my own math. Weather should be relatively controlled due to January...cold and more cold.

Ultimately, if I lose a few mpg I don't really care, since sport mode is a more enjoyable driving experience. But just interesting to know. Also, if it's not that bad, maybe I won't feel guilty about using it regularly

Regarding sport mode advantages, I really like it around the city, the ability to really move from a stop at a red light is greatly improved with sport mode IMO. Glad the car offers both sport and regular.

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post #5 of 17 Old 01-10-2016, 12:58 PM
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On that note of quick response from a stop, I'm thinking about getting a electronic power petal installed. Anyone has had experience of this in the past?
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post #6 of 17 Old 01-25-2016, 09:36 PM Thread Starter
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The results of my experiment are in...

Some notes before the numbers:
- I drove a combination of surburban/city/highway driving during this experiment, I estimate I did a similar amount of driving with both sport and regular mode...maybe a bit more highway with sport mode.
- Regarding driving style - I would say I drive faster than the average person, but I try not to rev the engine up excessively.
- The weather here got quite cold during the middle of my experiment (like -10ish as a high one day), but I think overall the temperature averages during both my sport and normal tank were pretty comparable.
- I reset MPG/trip meter before leaving the gas station after each fill up
- I never used the paddle shifters in sport, accept accidentally one time
- I never used eco mode

Driving exclusively in regular mode -
Miles driven: 281.3
Gas used (per pump): 14.93 gallons
Car reported avg MPG: 21.5
Calculated MPG: 18.8

Driving exclusively (or > 95% of the time ) in Sport mode -
Miles driven: 272.2
Gas used (per pump): 14.74 gallons
Car reported avg MPG: 21.1
Calculated MPG: 18.5

Verdict? Sport mode doesn't guzzle much extra gas. However, I think it gives you the opportunity to burn through more gas if you use the mode to accelerate aggressively, often.

Other thoughts:
- Like many others have found, the computer is reporting optimistic MPG numbers. Interestingly enough, the difference between the MPG from sport to normal for both my calculated and car reported was very similar. I wonder why the car calculation is off so much? Are my calculations missing something?

- I did get the fuel gauge software update, it seems to let me go through about 15 gallons exactly before it says it's empty. Still a lot of reserve

- The MPG is pretty crummy in cold weather. Oh well, I didn't buy this car to save money on gas

MY 2016 - Loaded HSE - Loire Blue w/ black pack (19s)
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post #7 of 17 Old 01-25-2016, 11:51 PM
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I've noticed very little difference in mileage between D and S mode as well. Driving style seems to matter much more than transmission mode. What did your ECO screens say about your driving styles?

I'm disappointed your fuel gauge update still left you with a 3.5 gal reserve. That is what I was getting before the update! We'll see if my update made any difference after I get the car back from its 20k service (hopefully this week). Was yours even worse before the update?

Finally the car calculates mileage on some rolling average basis (which I haven't been able to determine). Your experiment was obviously just one tank of gas for each test. Were the tests conducted on two consecutive tanks of gas? It could be that it was reporting mileage over some much longer period with a higher percentage of highway driving. I have noticed the opposite on days I drove 600+ miles after nothing but city driving for a few tanks of gas - I was getting better mileage in each tank than the system was reporting. It then flips the other way when I go back to city driving. Admittedly I haven't been recording my details like you did so this is pure recollection on my part.

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post #8 of 17 Old 01-27-2016, 06:01 PM Thread Starter
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I think it might have been a bit worse before the update, but it it didn't change much. I think maybe I got a half gallon less reserve.

I didn't really follow the eco screen much. I have been looking at the trip history and I range between low 70s and mid 80s. Interestingly, my computers best reported trip MPG (29 something) is also one of my low % (71 I think). Not sure what to make of this information. I'm seem to be good at breaking (upper 4s), but get dinged on speed and acceleration (high 3s/low 4s)

I did test this on two consecutive tanks of gas. I think you're right with the rolling averages. Even If I reset the trip meter, which seems to reset the MPG, it still seems to settle on the same numbers. Also odd, my last three trips according to my eco screen average 23ish MPG. My car still reports mid 21s on the gauge screen. Hmm.

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post #9 of 17 Old 01-28-2016, 09:41 AM
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I don't like to keep filling up the tank every 14 gallons - makes me think the car is a subcompact....

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post #10 of 17 Old 08-04-2016, 07:00 PM
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Originally Posted by petcha View Post
The results of my experiment are in...

Some notes before the numbers:
- I drove a combination of surburban/city/highway driving during this experiment, I estimate I did a similar amount of driving with both sport and regular mode...maybe a bit more highway with sport mode.
- Regarding driving style - I would say I drive faster than the average person, but I try not to rev the engine up excessively.
- The weather here got quite cold during the middle of my experiment (like -10ish as a high one day), but I think overall the temperature averages during both my sport and normal tank were pretty comparable.
- I reset MPG/trip meter before leaving the gas station after each fill up
- I never used the paddle shifters in sport, accept accidentally one time
- I never used eco mode

Driving exclusively in regular mode -
Miles driven: 281.3
Gas used (per pump): 14.93 gallons
Car reported avg MPG: 21.5
Calculated MPG: 18.8

Driving exclusively (or > 95% of the time ) in Sport mode -
Miles driven: 272.2
Gas used (per pump): 14.74 gallons
Car reported avg MPG: 21.1
Calculated MPG: 18.5

Verdict? Sport mode doesn't guzzle much extra gas. However, I think it gives you the opportunity to burn through more gas if you use the mode to accelerate aggressively, often.

Other thoughts:
- Like many others have found, the computer is reporting optimistic MPG numbers. Interestingly enough, the difference between the MPG from sport to normal for both my calculated and car reported was very similar. I wonder why the car calculation is off so much? Are my calculations missing something?

- I did get the fuel gauge software update, it seems to let me go through about 15 gallons exactly before it says it's empty. Still a lot of reserve

- The MPG is pretty crummy in cold weather. Oh well, I didn't buy this car to save money on gas
Nice to see someone actually calculate the MPG and show the S mode hardly affects the fuel economy.

Huge error from the car estimates.. Well over 10%
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