4 ms·

Wow, 160 kph! That's why. That extra drag really kills the battery. In the US I have never driven above about 130kph, anything higher is pretty much illegal eve

Wow, 160 kph! That's why. That extra drag really kills the battery. In the US I have never driven above about 130kph, anything higher is pretty much illegal everywhere.

TremendousJudge 5y ago
It's a normal speed in Germany. And yes, driving that fast also drains a gas tank very quickly. Not sure why GP is surprised -- an ICE car will also perform much worse than advertised at those speeds.
- Sharlin 5y ago
  But it's also pretty much only normal in Germany, and only on Autobahns. Almost everywhere in Europe the highway speed limit is 110 to 130 km/h, similar to the US.
  - seer 5y ago
    Eastern Europe limit is usually about 140kph, and everybody frequently speeds a bit. With a waze app to check for cameras/policemen you can easily do 160kph in a dingy corolla. People with expensive german cars usually go 220kph up to 280kph if they are pushing it. Doing 300kph on safe straight sections is not unheard of, but hard to pull off due to traffic.
  - rad_gruchalski 5y ago
    140kph in Poland.
- maxwell86 5y ago
  I drove a similar route as the GP, 1100km round trip for a ski trip to Austria, aiming at 190kph. I didn’t have to tank for the round trip, but I decided to tank on the way back cause in Austria tanking is much cheaper. My car isn’t particularly new, but the lowest I’ve seen it use is 4.5l/100km and at 180-190 it uses 6.5l/100km. In Germany most people don’t drive huge SUVs. Mine is a relatively sleek station wagon. Reducing the aerodynamic surface of cars significantly improved fuel economy.
  - TremendousJudge 5y ago
    So consumption increases about x1.5 from the "best case" to "autobahn speeds"? Sounds about right -- a 500km range would get reduced to ~340km. It's better than the 500km -> 300~250km claimed by GP, but it's still a big reduction in range.
    - maxwell86 5y ago
      > So consumption increases about x1.5 from the "best case" to "autobahn speeds"? Yes, pretty much. I wouldn't say 1.5x is a constant factor. If I drive at 200+kph (e.g. 240kph) then consumption explodes. This stuff must be online somewhere, but for me at least it seems that consumption increases exponentially (e.g. x^2), which makes sense since air resistance increases with v^2.

Wow, 160 kph! That's why. That extra drag really kills the battery. In the US I have never driven above about 130kph, anything higher is pretty much illegal everywhere.

TremendousJudge 5y ago

It's a normal speed in Germany. And yes, driving that fast also drains a gas tank very quickly. Not sure why GP is surprised -- an ICE car will also perform much worse than advertised at those speeds.

Sharlin 5y ago
But it's also pretty much only normal in Germany, and only on Autobahns. Almost everywhere in Europe the highway speed limit is 110 to 130 km/h, similar to the US.
- seer 5y ago
  Eastern Europe limit is usually about 140kph, and everybody frequently speeds a bit. With a waze app to check for cameras/policemen you can easily do 160kph in a dingy corolla. People with expensive german cars usually go 220kph up to 280kph if they are pushing it. Doing 300kph on safe straight sections is not unheard of, but hard to pull off due to traffic.
- rad_gruchalski 5y ago
  140kph in Poland.
maxwell86 5y ago
I drove a similar route as the GP, 1100km round trip for a ski trip to Austria, aiming at 190kph. I didn’t have to tank for the round trip, but I decided to tank on the way back cause in Austria tanking is much cheaper. My car isn’t particularly new, but the lowest I’ve seen it use is 4.5l/100km and at 180-190 it uses 6.5l/100km. In Germany most people don’t drive huge SUVs. Mine is a relatively sleek station wagon. Reducing the aerodynamic surface of cars significantly improved fuel economy.
- TremendousJudge 5y ago
  So consumption increases about x1.5 from the "best case" to "autobahn speeds"? Sounds about right -- a 500km range would get reduced to ~340km. It's better than the 500km -> 300~250km claimed by GP, but it's still a big reduction in range.
  - maxwell86 5y ago
    > So consumption increases about x1.5 from the "best case" to "autobahn speeds"? Yes, pretty much. I wouldn't say 1.5x is a constant factor. If I drive at 200+kph (e.g. 240kph) then consumption explodes. This stuff must be online somewhere, but for me at least it seems that consumption increases exponentially (e.g. x^2), which makes sense since air resistance increases with v^2.