2 year ownership kWh Consumption Analysis

[Nyck80]

Hi,

I have my 2022 base Taycan now for almost 2 years and wanted to look into the consumption a little bit closer since the data raised some questions. In short, the average overall since I own the car is 26.3 kWh/100mi (or 3.8 mi/kWh). But I always look at the consumption while driving and it's ALWAYS higher. So I downloaded the all the data to analyze it. The below is just an initial chart but it already shows that the blue dots which represent the average consumption since charge are always higher than the overall average (orange line). Also the trendline is trending upwards which might be normal but still concerns me.

Additional info: I live in NYC area and mostly drive shorter distances. It's also very cold during winter and the car is parked outside.

Am I missing something here?

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[WuffvonTrips]

You aren't alone in seeing such a discrepancy- see thread from this post onwards:
https://www.taycanforum.com/forum/threads/what-is-your-true-mileage.17579/post-271415

 

[azraeil]

I am seeing the total km driven from the odometer and the km since charging totals that are different with one another. I keep a spreadsheet whenever I charge and there's discrepancy there as well (usually in terms of km travels and usually off by 1-2 km) but there have been cases where it is off by 7-8 km. And now, there is a data input on 31st January where I DID NOT CHARGE the car with 132km since charging .... it is as if the system saw the totals discrepancy and decided to put a data entry to balance the deficit.

Weird

 

[KLHubb]

My energy usage varies enormously with distance traveled, temperature, topography, accessory use, etc. See the images attached for my best range and mileage/KW. I have a 3.5 year old 2020 Taycan 4S with 20k miles on the odometer, bought new. Coasting is a great way to extend mileage...make gravity be your friend. Also avoid burning off kinetic energy by braking. One does not recover 100% of the energy using regen due to associated parasitic losses. Of course in stop/go city driving one has no alternative. On interstate trips, however, you can really extend range using this technique. The updated batteries+tech will no doubt be great, but for me, this vehicle is perfectly wonderfully adequate. No complaints....3.5 years of trouble free driving.

 

[Nyck80]

I totally understand the variance of range depending on weather, driving, load, etc. I also have no issue with the "guesstimator" being off because of the circumstances mentioned above can always change.

But my issue is that the car miscalculates the overall average consumption. It clearly has the capability to accurately calculate and show trip data, but the total average is totally off. How is that possible? It's not an estimate, it's calculation of previous trips.

 

[KLHubb]

No doubt better software could improve tings, perhaps in the offing in '24 OTA....Hope springs eternal

 

[Scandinavian]

I totally understand the variance of range depending on weather, driving, load, etc. I also have no issue with the "guesstimator" being off because of the circumstances mentioned above can always change.

But my issue is that the car miscalculates the overall average consumption. It clearly has the capability to accurately calculate and show trip data, but the total average is totally off. How is that possible? It's not an estimate, it's calculation of previous trips.

I have noted exactly the same and actually show a summary in a separate thread. Did not see yours before.

My cars odometer is different from the total from the website statistic as is the summary of Since Charging and Since start driven km’s.
And the consumption figures are completely wrong. The reported figures are fantasy. No idea how Porsche come to these results.

I have made a summary and pointed out the discrepancy. I have sent this to Porsche Smartmobility and wait to see if they will answer at all. So far radio silence.

I think you should do the same. Send to the dealer technician, smartmobility and Porsche.

 

[W1NGE]

3.

Hi,

I have my 2022 base Taycan now for almost 2 years and wanted to look into the consumption a little bit closer since the data raised some questions. In short, the average overall since I own the car is 26.3 kWh/100mi (or 3.8 mi/kWh). But I always look at the consumption while driving and it's ALWAYS higher. So I downloaded the all the data to analyze it. The below is just an initial chart but it already shows that the blue dots which represent the average consumption since charge are always higher than the overall average (orange line). Also the trendline is trending upwards which might be normal but still concerns me.

Additional info: I live in NYC area and mostly drive shorter distances. It's also very cold during winter and the car is parked outside.

Am I missing something here?

3.8 is a tremendous figure for consumption. My consumption for a 4S over the same period was 3.1. My current GTS is around 2.6 9 months in.

318 miles is arguably more than I would expect to get with new facelifted Taycan if the figures are to be believed.

You should be happy.

 

[Nyck80]

3.8 is a tremendous figure for consumption. My consumption for a 4S over the same period was 3.1. My current GTS is around 2.6 9 months in.

I'm not getting 3.8, that's just what the app and the car says for total consumption. Looking at the individual trips and calculating the total from there, I only get 2.81 mi/kWh or 35.5 kWh/100 mi which I think it terrible, especially for a base Taycan.

 

[KLHubb]

Yes, I wonder whether Porsche knows of this discrepency...commons sense suggests that they must know. Could this amount to misrepresentation? I wonder how Porsche would explain it?

 

[Nyck80]

I'm going down the rabbit hole now... While it doesn't explain the discrepancy mentioned earlier, my driving pattern is certainly not conducive for good consumption numbers. Almost half of my trips are under 10 miles where the consumption is terrible.

 

[KLHubb]

I have not examined things as closely as you have, but yes, I observe the same thing: I will drive up the street and the kw/100 miles will horrendous, since one is dividing .5 miles by all the energy required to acccelerate from 0 mph to 20 mph.
On the other hand, if I drive downtown(big change in elevation) the consumption is absolutely minimal since i am accumulating miles consuming minimal energy.
It seems to be a matter of simple division: if you drive up the street .5 miles all that energy is divided by .5 miles. On the other hand, if I drive 65 miles to Syracuse, those miles are divided by kw's consumed by a combination of accelerating, coasting, cruising, etc. So in the end, it seems a simple matter of continuously dividing total energy consumption by distance, thus longer distances generally yield better mileage figures. What am I missing?

 

[W1NGE]

I'm not getting 3.8, that's just what the app and the car says for total consumption. Looking at the individual trips and calculating the total from there, I only get 2.81 mi/kWh or 35.5 kWh/100 mi which I think it terrible, especially for a base Taycan.

Which wheels do you have?

 

[rs38]

the "overall" trip averages from Porsche Connect are pure bullshit and more or less decreasing overtime however you drive... It's neither a fixed, absolute or relative deviation. 20 years back some deviation could be explained by capping consumptions at 39,9 l/100km, but currently it only seems that the longer your "overall" trip is the worse the deviation. I reset "overall" every 5-10.000km btw.

I've seen some guesses that try to explain it an integer overflow etc. but that never fits 100%.

 

[Nyck80]

Which wheels do you have?

I have the 21" RS Spyder Design Wheels

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