EV Discussion thread

Grumpy_chap

I was out in the car today, on a short trip and I noticed a whirring sound (similar to that when the battery is pre-conditioning for charging).  I assume that is the heat pump operating to provide cabin heating.  Observed energy consumption (as per the on board display) was greater than I have been used to.  One short trip does not make a valid data set, but gives an indication that there will be an impact - possibly there would not be the same level of impact from an ICE because the ICE simply uses heat energy that is wasted at all other times regardless.

Another observation I have had recently is a message that parking distance sensors are inaccurate and the images of obstacles have been just blurred blobs.  I assumed that was dirty cameras because of the wet weather and salt spray we have had so much of recently so I cleaned the cameras (that I am aware of - front, rear, door pillars, wing mirrors) today but I still get a blurry display.  Previously the depictions were crystal clear.  Does anyone know why this would be?

Netexporter

possibly there would not be the same level of impact from an ICE because the ICE simply uses heat energy that is wasted at all other times regardless

ICE vehicles waste over 60% of their fuel all the time the engine is running.

MikeJXE

Netexporter said:

possibly there would not be the same level of impact from an ICE because the ICE simply uses heat energy that is wasted at all other times regardless

ICE vehicles waste over 60% of their fuel all the time the engine is running.

How much would that be over the last 100 or so years ? 

noitsnotme

Grumpy_chap said:

I was out in the car today, on a short trip and I noticed a whirring sound (similar to that when the battery is pre-conditioning for charging).  I assume that is the heat pump operating to provide cabin heating.  Observed energy consumption (as per the on board display) was greater than I have been used to.  One short trip does not make a valid data set, but gives an indication that there will be an impact - possibly there would not be the same level of impact from an ICE because the ICE simply uses heat energy that is wasted at all other times regardless.

Another observation I have had recently is a message that parking distance sensors are inaccurate and the images of obstacles have been just blurred blobs.  I assumed that was dirty cameras because of the wet weather and salt spray we have had so much of recently so I cleaned the cameras (that I am aware of - front, rear, door pillars, wing mirrors) today but I still get a blurry display.  Previously the depictions were crystal clear.  Does anyone know why this would be?

That’s the new Tesla Vision 3D rendering for Park Assist that came with the latest updates.  Or are you saying you’ve seen the new 3D rendering clearer than that?

if you don’t already know, put your finger on the screen when in that mode and move it around.  You can see the car and obstacles around it from any angle.

I know it’s not been popular with some but I really like it and find it far more accurate than the old squiggly lines.  It also shows parking bay lines when in a car park.

https://electrek.co/2023/12/17/tesla-unveils-bird-eye-view-3d-reconstruction-park-assist/

JKenH

This is the level of camera tech on a 2013 Nissan Leaf. How many years ahead of the opposition is Tesla?

https://twitter.com/MouldS/status/348162415864733696

noitsnotme

Tesla could definitely do much better.  The Birds Eye view on my fathers Nissan Juke is far better.  But at least this new 3D rendering is an improvement on the useless squiggly lines we had before.

JKenH

Netexporter said:

possibly there would not be the same level of impact from an ICE because the ICE simply uses heat energy that is wasted at all other times regardless

ICE vehicles waste over 60% of their fuel all the time the engine is running.

Not wishing to start an ICE vs debate but, perhaps, in pointing out the inefficiency of an ICE vehicle we should also acknowledge that typically only around 75% of the energy an EV draws from the plug is used to propel it, the rest might be considered “wasted”. 

JKenH

Interesting statistics from the German EV market for 2023.

Volkswagen sold the highest number of all-electric cars in Germany, while Mercedes-Benz is the king of plug-in hybrids. Tesla was the second best in terms of BEV sales with 63,685 registrations, but its result was 9% lower than a year ago. That's a surprise—or maybe not if we take into account 17,501 registrations in December 2022 (incentives).

Plug-in car registrations by brands (at least 15,000) in 2023:

• Volkswagen: 78,427 - 70,628 BEVs and 7,799 PHEVs
• Mercedes-Benz: 78,138 - 36,703 BEVs and 41,435 PHEVs
• Tesla: 63,685 BEVs

Plug-In Car Sales In Germany Decreased By 58% In December 2023

Last year Tesla sold 68,787 MYs and M3s while VW sold 43,456 iD3s and iD4s. VWs sales are up 46% compared to Tesla's falling 9% despite the ramp up of the Berlin Tesla factory. While MY sales in Germany were up substantially M3 sales fell to 15.865 in 2023 compared to 33,341 in 2022. As in the UK it seems the MY is primarily stealing sales from the M3.

EricMears

JKenH said:

Netexporter said:

possibly there would not be the same level of impact from an ICE because the ICE simply uses heat energy that is wasted at all other times regardless

ICE vehicles waste over 60% of their fuel all the time the engine is running.

Not wishing to start an ICE vs debate but, perhaps, in pointing out the inefficiency of an ICE vehicle we should also acknowledge that typically only around 75% of the energy an EV draws from the plug is used to propel it, the rest might be considered “wasted”. 

IMO,  75% 'efficiency' is a lot better than 40%.

And of course for most of us the cost/unit energy of electrical fuel is a lot less than for liquid fuel.

noitsnotme

JKenH said:

Netexporter said:

possibly there would not be the same level of impact from an ICE because the ICE simply uses heat energy that is wasted at all other times regardless

ICE vehicles waste over 60% of their fuel all the time the engine is running.

Not wishing to start an ICE vs debate but, perhaps, in pointing out the inefficiency of an ICE vehicle we should also acknowledge that typically only around 75% of the energy an EV draws from the plug is used to propel it, the rest might be considered “wasted”. 

The charging loss on my Model Y seems to be around 10% or less.

I charged last night, the Myenergi app says it delivered 32.02 kWh through the Zappi charger.  The Tesla app says the car received 29.75 kWh.  I don’t know how accurate those are but that’s only a 7% loss.