New bug, .38 CD why?

[bandit86]

Originally Posted by aerohead

* At a Tesla Supercharger station, the grid-to-car charging efficiency is 91%.
* The 'in-car' efficiency of late model Tesla cars is 95%.
* Electric power leaving the pack would be 34.736-mpg-e
* Electric power leaving the Diesel generator would be 38.172-mpg-e.
* The CdA, weight, rolling-resistance, and powertrain of the Jetta TDI would have to be compared to that of the 'Tesla' that was examined, at the same road speed conditions, in order to sort out the rest of the differences.
( A Toyota Prius is 'supersonic' on the Moon ).
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* The 2nd-generation Tesla Roadster is the ONLY Tesla with an aerodynamically-correct roofline.
* The original Tesla Model X had an active, 3-position rear spoiler, that helped mitigate aero issues at speed.
* Any 'elongation' of the Models S, 3, and Y is beneficial.

I would love to see a proper apple to Apple calculation. Use a diesel generator to charge a Tesla, and measure exactly how much fuel was used. Same car, same charger, round trips. Then compare it to a similar vehicle. But what is similar? The Tesla is very heavy because of its batteries. So would a diesel Passat be comparable?

https://thedriven.io/2018/12/14/dies...han-you-think/

[Piotrsko]

2000 passat TDI used to get maybe 60 mpg (diesel), no dpf, just a cat, much better than a Golf. Fuel is crap nowadays, same car gets 45 mpg.

[aerohead]

Originally Posted by bandit86

I would love to see a proper apple to Apple calculation. Use a diesel generator to charge a Tesla, and measure exactly how much fuel was used. Same car, same charger, round trips. Then compare it to a similar vehicle. But what is similar? The Tesla is very heavy because of its batteries. So would a diesel Passat be comparable?

https://thedriven.io/2018/12/14/dies...han-you-think/

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* Automotive Diesels are in the neighborhood of 42% Brake Thermal Efficiency ( BTE ), wasting 58% of the fuels energy right off the bat.
* A gallon of Diesel has been assigned an equivalence of 40.108-kWh electrical energy, so that would have fallen to 28.877-kWh leaving the shaft of the engine, and entering the alternator
* Alternators are very efficient. Allowing a 98% efficiency, a Tesla would 'see' 28.3-kWh coming at it, for each 40.108 kWh-e gallon of fuel burned.

[skyking]

The same era Golf is much more better-er at aero than the new Beetle, but I can get into and out of the Beetle and sit it far more superior-usly.
I'll keep paying the tall guy tax and drive on.