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Alessandro Giuseppe Antonio Anastasio Volta
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Among other things this video (with english subtitles) shows how the ID.3 uses a large amount of juice to heat the battery and how the software is not optimised for the heat pump yet. Interesting but a long watch so make a cuppa.

 

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Conclusion: ID.3 heatpump + Winter tyres has less range/efficiency then the ID.3 wiyjout heatmump on All Seasons tyres.
The tester thinks the effect of WInters is to lose about 1% of range, as compared to the All Seasons.

This needs to be compared to this video: EV News rides again!
where the ID.3s, presumably on similar tyres, hopefully the same pressures, did the identical run.
ID.3 without h-pump took 33.5 kWh to refill back up to the original 80% it started at.
ID.3 with h-pump took 30.735 kWh to refill back up to 80%.
That's a 9% improvement by having the heatpump.

The original test in first post in this thread really needs to be re-done, using the same tyres. I can't believe that Winters are only 1% worse range-wise that all seasons. One was rated B for efficiency (Continental something), the other (Continental WinterContact) a C.

No idea what was going on with the heatpump overnight aircon test, temperatures seemed to be all over the place! And maybe the heatpump is meant to source most of its heat from the electric motor the motor driver electronics during a drive, as these will tend to get warm obvs, and on the overnight test these are doing nothing. It's quite possible that test may have really frozen the motor & electronics to well below zero, in its attempt to suck out the nonexistent heat, in which case I'm not at all surprised it failed to work! It may have acted as a brilliant fridge instead!
 

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2015 Golf Match Bluemotion 1.0 TSI
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ID.3 without h-pump took 30.735 kWh to refill back up to the original 80% it started at.
ID.3 with h-pump took 30.735 kWh to refill back up to 80%.
That's a 9% improvement by having the heatpump.
I think figures are incorrect??
 
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VW ID.3 Tour
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Doing this on different tyres... especially winter tyres which are notoriously less efficient is probably not the best comparison. It probably more proves that you can use the "right" tyres and gain more efficiency than potentially a heat pump will give you.

The value of a heat pump is in high consumption conditions, where the heat (aka inefficiency) is the greatest, and that heat is recovered... what would an overnight test prove?
 
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