EV Energy Consumption (EPA) Compared By Vehicle/Trim

About 250 pounds I believe. IMO if it's tuned to the point where it's all the way off it should only be negligibly less efficient than the RWD on the highway/interstate. I'm definitely no motor expert though. But the current discrepancy seems a little weird.

 

I’m not sure if this is done the same way in the 3, as the S. With the AWD Model S, the rear motor was used at low speeds, the front motor at highway speeds. Both motors used during heavy power use.
If this is the case, you could test it by accelerating gently and driving at slow speeds. You would need to do this long enough to get a good measurement of efficiency.

Of course, some use summer, 19” tires which impacts efficiency. It looks like you have the stock 18” tires with covers which should help.

 

The weight includes extra parts on the AWD that need to be spun up even if the front motor isn't doing anything. Unless there is a clutch in there, one of those moving parts will be the motor's rotor, so the weight of moving parts can be a decent portion. That is going to sap more energy beyond the added weight.

 

presume no clutch - & moving rotor - ok - but in city driving/stop & go, wouldn't that be a nice inertia force to aid w/ regenerative power capturing? iirc - Tesla actually limits regeneration to 60kW's, even though in theory it could easily do in the 100's.
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