Best Range - Real World
#81
Thanks for posting this!
I think the testing methodology is good but I have a theory that the variance from EPA results comes from the route/course. The main factors that will contribute to this are aerodynamics and weight. I think they should post the results when used in pure city driving and pure highway as well as their combined results. Each car will respond differently. Within limits, the light cars will do better in the city and the more aerodynamic cars will perform better on the highway. There's a reason the EPA posts city/highway numbers and not just combined. Also, I don't care too much about city range because the only time range matters for me is long distance highway driving.
I think the testing methodology is good but I have a theory that the variance from EPA results comes from the route/course. The main factors that will contribute to this are aerodynamics and weight. I think they should post the results when used in pure city driving and pure highway as well as their combined results. Each car will respond differently. Within limits, the light cars will do better in the city and the more aerodynamic cars will perform better on the highway. There's a reason the EPA posts city/highway numbers and not just combined. Also, I don't care too much about city range because the only time range matters for me is long distance highway driving.
#82
I tend to average 37 kWH on the way to work which is about 11 miles, mostly freeway with some stop and go traffic traveling 65mph with ACC on and set to efficiency mode. Interesting enough the miles left will only drop 2 - 3 miles as a whole. I could start with 155 miles and end up at work with 153 miles left so i'm pleased with the results.
Different story on the way home though. Same route and similar scenario but the average jumps to about 47 to 50 kWH which is disappointing. I do hope that over time as Audi collects more information about the car they can open the the 95Kw battery more.
Different story on the way home though. Same route and similar scenario but the average jumps to about 47 to 50 kWH which is disappointing. I do hope that over time as Audi collects more information about the car they can open the the 95Kw battery more.
#83
AudiWorld Senior Member
I tend to average 37 kWH on the way to work which is about 11 miles, mostly freeway with some stop and go traffic traveling 65mph with ACC on and set to efficiency mode. Interesting enough the miles left will only drop 2 - 3 miles as a whole. I could start with 155 miles and end up at work with 153 miles left so i'm pleased with the results.
Different story on the way home though. Same route and similar scenario but the average jumps to about 47 to 50 kWH which is disappointing. I do hope that over time as Audi collects more information about the car they can open the the 95Kw battery more.
Different story on the way home though. Same route and similar scenario but the average jumps to about 47 to 50 kWH which is disappointing. I do hope that over time as Audi collects more information about the car they can open the the 95Kw battery more.
#84
#85
AudiWorld Senior Member
The only other variable I can think of is greater motivation to get home than go to work leading to a more aggressive driving style.
#86
AudiWorld Member
The elevation at home is about 300' and sea level at work. Seems minor, but I consistently have a 4 kWh/100 increase in consumption on the return leg. One roundtrip in particular I averaged 34.0 at 50 mph average outbound compared to 38.6 inbound (same 40 mile route, time enroute, temperature, and average speed). The recuperation is greater on the outbound leg with a very gradual descent to sea level. Coming home, the descent is shorter and steeper and recuperation appears to be not as good. One other variable besides elevation is climate control: Leaving my garage outbound, the car is cool and AC demand minimal. Returning home the car is generally heat soaked requiring more AC.
The only other variable I can think of is greater motivation to get home than go to work leading to a more aggressive driving style.
The only other variable I can think of is greater motivation to get home than go to work leading to a more aggressive driving style.
The equation for Potential energy (in Joules) is Mass. ( in kg) times g ( 9.8 meter ^ 2) * height ( in meter)
if you do the math. the Joules required to go up 300 ft is about 2.44 million joules which is equal to 0.679 kWh ( ie the energy requires to lift 6000 lb to 300 ft height)
the descending trip will gain back about 30% ( ie -0.2037 kWh)
the difference is 0.88 kWh when you compare the up and down hill trip. and since each way is 20 miles , that translate to (0.88 x 5) 4.4 kWh / 100 miles difference ! which is very close to your observation of 4 kWh !!! Yup I work in energy industry and am math guy :-)
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perlfather (07-05-2019)
#87
We have 1300 miles on ours, my wife who is not an aggressive driver is getting 2.6 miles per kw. Last trip she charged to plugged in and we charge to 90%. showed 212 miles of range.
#88
AudiWorld Senior Member
Here is the math to explain the 4kWh/100 miles difference:
The equation for Potential energy (in Joules) is Mass. ( in kg) times g ( 9.8 meter ^ 2) * height ( in meter)
if you do the math. the Joules required to go up 300 ft is about 2.44 million joules which is equal to 0.679 kWh ( ie the energy requires to lift 6000 lb to 300 ft height)
the descending trip will gain back about 30% ( ie -0.2037 kWh)
the difference is 0.88 kWh when you compare the up and down hill trip. and since each way is 20 miles , that translate to (0.88 x 5) 4.4 kWh / 100 miles difference ! which is very close to your observation of 4 kWh !!! Yup I work in energy industry and am math guy :-)
The equation for Potential energy (in Joules) is Mass. ( in kg) times g ( 9.8 meter ^ 2) * height ( in meter)
if you do the math. the Joules required to go up 300 ft is about 2.44 million joules which is equal to 0.679 kWh ( ie the energy requires to lift 6000 lb to 300 ft height)
the descending trip will gain back about 30% ( ie -0.2037 kWh)
the difference is 0.88 kWh when you compare the up and down hill trip. and since each way is 20 miles , that translate to (0.88 x 5) 4.4 kWh / 100 miles difference ! which is very close to your observation of 4 kWh !!! Yup I work in energy industry and am math guy :-)
Thanks for this. I considered the hit too great to explain away with elevation alone. I was not properly considering the calculation over 100 miles.
#90
AudiWorld Member
It's a lot of money if you're having doubts. In the meantime, you can monitor the experience of CO and UT based e-tron owners over the coming winter. I decided to go with a 3 year lease on a Model 3. At the end of the lease, there should be many more options available.