Fuel economy comparison of Porsche 911 Sports Exhaust & Sports Mode etc. 3 (Conclusion)

Fuel economy comparison in various modes with Porsche911 Carrera

Normally, I only care about the fuel efficiency of a car by saying "I see it because the numbers come into my eyes", and I rarely "drive with the fuel efficiency in mind".

On the other hand, when you run a short distance in the city and say, "The fuel consumption was 4km / L from the beginning to the end!", The tension rises. Oh, I played a little too much today (laughs).

By the way, when I look at the numbers that come into my eyes, I'm curious, so I tried various things. The fuel economy comparisons I have tried in the past are the following four patterns.

The results at that time are as follows.

In the measurement, "Driving in the city with many traffic lights "so"Time required: Approximately 28 minutes""Mileage: Approximately 10.9km""Average speed: Approximately 24 kmWith "" as an index, "Same way "Is running. "No use of air conditioner"is.

I should have been satisfied with this, but my husband pointed out that there are still two patterns left, and when I measured these two, I wondered if "fuel efficiency is getting worse because of sports mode" or "idling" I thought that it might be clearer that the fuel economy is getting worse because it doesn't stop (* When the sports mode is turned on, the idling stop is automatically turned off) ", so I ran to the measurement again. Saw.

I doubt that the idling stop OFF is deteriorating fuel efficiency.

The remaining two measurements are as follows.

First of all, in this state ↓ All modes are off, idling stop is also off, everything is in the "off" state.

I will run at once. As you drive around the city normally, the number that represents fuel efficiency gradually increases, but this is the case. Do you understand?

The running time is 9 minutes (that is, within 1 minute) and it is the change of the meter when the signal is stopped, but the value that was 7.9km / l at the beginning when stopped at the signal is now 7.8km / l. This is probably when I've only stopped for less than 30 seconds.

Furthermore, even more. Also, while driving, the fuel consumption value slowly increases, but if you stop for a long time at the traffic light, the value will decrease.

The running time has changed from 10 minutes to 11 minutes (that is, the signal has stopped for less than 1 minute), and the fuel consumption value has dropped from 8.1km / l to 7.9km / l.

Next, it was a signal with a slightly long waiting time, which seems to have stopped properly for almost 1 minute, but the fuel consumption value dropped from 8.4km / l to 8.1km / l while it was stopped. I did.

With this kind of feeling, when "idling stop is off", the value of fuel consumption that has risen after running will drop every time it stops at a traffic light. The result of running the time and distance of the index is as follows.

"SpoekiOFF OFF + Sport modeOFF OFF + Idling stopOFF OFFThe fuel consumption of Porsche 911 Carrera (991.2) in "" is "8.5km / l".

Then, I would like to continue running with only "Spoeki ON + Idling stop OFF". The switch is in this state ↓

Hmm, the sound has improved! happy! No, no matter how much it is for measurement, running without sports exhaust is really unsatisfactory ... I'm so lonely, so I'm happy just to be able to turn on Spoeki.

So. measurement. Well, I'm running on the same road, but at first I wasn't stopped by the traffic lights at all, and I happened to be able to run beautifully, so the average speed was a little faster, so at first The fuel consumption value has reached "10.2km / l" in 9 minutes. The main reason for this is that the road conditions were better than usual.

However, for the time being, the situation when I stopped at the traffic light was still "idling stop off", so I experienced the same "when I stopped, the fuel consumption value decreased steadily".

The stop time was less than 1 minute, and the fuel consumption value dropped from 10.2km / l to 9.8km / l.

The road conditions have returned to normal levels, and the average speed is getting closer to what is used as an index. At that point, the fuel consumption value is 8.9km / l → 8.7km / l within about 1 minute when the traffic light is stopped, and if you clean it every time you stop, the value will drop.

result. Finally "SpoekiON + Sport modeOFF OFF + Idling stopOFF OFFThe fuel consumption of Porsche 911 Carrera (991.2) in "" is "8.5km / l"have become. Oh. Same as before.

The only difference between sports mode OFF and idling stop OFF was "Sports exhaust ON / OFF", but the result was the same in my run.

Until now, there was a difference in other measurements at the time of "sports exhaust ON / OFF", so I think that this result is a bit suspicious, but after all it is quite lucky at the beginning, Is it a big factor that I was able to run more beautifully (= improved fuel efficiency) without stopping at the signal than usual? ??

Porsche 911 Carrera fuel economy comparison result

The table shows the final measurement results.List in order of poor fuel economydoing. "Sports mode ON", "Sports exhaust ON", and "Idling stop OFF", which were supposed to "worse fuel efficiency", are red (that is, the state where the button is pressed is red).

* When the sports mode is turned on, the idling stop is forcibly turned off, so it is not possible to measure everything that is "ON".

anyway,Turn off both sports mode and sports exhaust, and stop idling.It turned out that the fuel economy is the best in the first place.

The exact opposite,Turn on sports mode and sports exhaust, and do not stop idlingThe result is that the case is the worst fuel economy.

I feel that this result is as expected or convincing.

Porsche 911 Sports Exhaust may not actually affect fuel economy so much

What I don't really like is the comparison of ⑤ and ⑥, "Sports mode and idling stop are both OFF, the only difference is whether the sports exhaust is ON or OFF". I was a little unconvinced of this comparison, so I'm actually trying to run under the same conditions several times after this, I.

I had hypothesized that the conditions would be worse and the fuel consumption would be worse when "Spoeki ON", but no matter how many times I ran, there was still an error between ⑤ and ⑥. It was. This is really mysterious. It depends on my driving problems and the road conditions at that time ...

There is a slight difference between (2) and (3), but considering that the difference between the numbers is not so large, in fact, "Even if you turn on the sports exhaust, there is not much difference in fuel efficiency.(When idling stop is OFF. When idling stop is ON, there is a difference of 2.2km / l, but considering the results of several measurements after that, in fact, it is Spoeki. To the conclusion that there is not much difference in fuel efficiency).

Idling stop OFF has the greatest effect on fuel efficiency

I haven't measured and considered it in earnest, but as a result of my enjoyed measurement,

It became something like that. If there is a person who says, "I don't turn on Spoeki so much because it makes fuel consumption worse" (I don't think that people who can use Spoeki will be able to run with fuel efficiency in mind ^^), in fact, Spoeki. Regarding, I think it's OK to "always on" without worrying about fuel efficiency! !!

It was a lot of fun to measure the fuel consumption of the Porsche 911 Carrera, which I tried several times over a long period of time.

I usually do not think about anything and just run with the thought of "fun!", But sometimes when I think about various things or dare to measure something and run, that is it, and it is new again. I feel like I can get to know the new side of Porsche 911. I'm very happy about that.

I love this much, and even though I ride every day, Porsche is full of things I do not know and understand ^ ^

Rika (911supercars.com)

I'm Rika, the author of this article. Ever since Porsche 911 became my favorite car, I've become totally addicted to Porsche, and I can't stop loving Porsche, so I started this blog. My favorite cars are 911 Carrera (991.2), 911 Carrera Cabriolet (992.1), and 911 Carrera T (992.1).