EV comparisons (UK)

Tesla EVs Interest Group
Post Reply
Nagaman
Groupie
Posts: 208
Joined: Wed, 20 Nov 2019, 05:17
Real Name: David

EV comparisons (UK)

Post by Nagaman »

So this official looking website, which professes to know all about all, has the Tesla M3SR+ as being no more efficient than it’s dual motor version which has a 50% larger battery capacity and conveniently goes exactly 50% further.

https://ev-database.org/imp/
Nagaman
Groupie
Posts: 208
Joined: Wed, 20 Nov 2019, 05:17
Real Name: David

Re: EV comparisons (UK)

Post by Nagaman »

.....Er EV comparison

[ Edited Coulomb: Topic subject changed. You can change it yourself by editing the first post of the topic. ]
User avatar
EVdownUnder
Groupie
Posts: 119
Joined: Wed, 14 Aug 2019, 16:08
Real Name: Patrick Ulrich
Location: Upwey
Contact:

Re: EV comparisons (UK)

Post by EVdownUnder »

I'm confused by your comment.
With equal efficiency, both 250Wh/mile, an EV with a 50% bigger battery SHOULD go exactly 50% further.
Did they get the battery size wrong?
Interestingly, if you choose metric instead of imperial, their efficiency are slightly different?
I love this website. A great place to see all EVs (only the ones available in EU but that is close to all of them).
Ceramic blue Kona Highlander - Current stats:
As of 26 October 2020 (13.5 months of ownership)
40'000km at an average speed of 57km/h
126Wh/km from new
Nagaman
Groupie
Posts: 208
Joined: Wed, 20 Nov 2019, 05:17
Real Name: David

Re: EV comparisons (UK)

Post by Nagaman »

EVdownUnder wrote: Sat, 30 May 2020, 18:06 I'm confused by your comment.
With equal efficiency, both 250Wh/mile, an EV with a 50% bigger battery SHOULD go exactly 50% further.
Did they get the battery size wrong?
Interestingly, if you choose metric instead of imperial, their efficiency are slightly different?
I love this website. A great place to see all EVs (only the ones available in EU but that is close to all of them).
The American EPA figures are more realistic to start with.
Two motors increases your power losses which are generally considered to be around 20% (in this case x2 for the dual motor) and confirmed by the EPA’s figures......it’s basic physics.
The linked site is just rubbish AFAIC.
Nagaman
Groupie
Posts: 208
Joined: Wed, 20 Nov 2019, 05:17
Real Name: David

Re: EV comparisons (UK)

Post by Nagaman »

You took my charging spot the other day......if it’s the blue Kona)))))
User avatar
EVdownUnder
Groupie
Posts: 119
Joined: Wed, 14 Aug 2019, 16:08
Real Name: Patrick Ulrich
Location: Upwey
Contact:

Re: EV comparisons (UK)

Post by EVdownUnder »

Nagaman wrote: Sun, 31 May 2020, 09:42 You took my charging spot the other day......if it’s the blue Kona)))))
Sorry! Well that won't happen again as they fixed both cables and took the opportunity to set both of them to Tesla only. Disappointing.
And yes my parking technique was getting more and more inventive as the cable deteriorated more and more. Another month and I would have had to park my car upside-down to activate...
You are the blue M3?
Ceramic blue Kona Highlander - Current stats:
As of 26 October 2020 (13.5 months of ownership)
40'000km at an average speed of 57km/h
126Wh/km from new
Nagaman
Groupie
Posts: 208
Joined: Wed, 20 Nov 2019, 05:17
Real Name: David

Re: EV comparisons (UK)

Post by Nagaman »

You are the blue M3?
[/quote]

No it’s the white SR+
HAL9K

Either way the centre needs to understand that just 2 outlets is just so unpredictable as to be useless for emergency planning purposes or to attract EV regulars.
antiscab
Senior Member
Posts: 2700
Joined: Mon, 26 Nov 2007, 05:39
Real Name: Matthew Lacey
Location: Perth, WA

Re: EV comparisons (UK)

Post by antiscab »

Nagaman wrote: Sun, 31 May 2020, 09:40 Two motors increases your power losses which are generally considered to be around 20% (in this case x2 for the dual motor) and confirmed by the EPA’s figures......it’s basic physics.
That depends upon whether core (magnetic) or copper (resistance) losses dominate
going to two motors doubles the (usually minimal) core losses but halves (ususally the more substantial) copper losses

going to a larger motor, or two motors tends to have higher efficiency across the operating envelope except at very low load (in which case in the two motor case one can be powered down)
Matt
2017 Renault zoe - 25'000km
2007 vectrix - 156'000km
1998 prius - needs Batt
1999 Prius - needs batt
2000 prius - has 200 x headway 38120 cells
User avatar
g4qber
Senior Member
Posts: 1877
Joined: Sat, 31 Jul 2010, 06:27
Real Name: Joseph
Location: Perth
Contact:

Re: EV comparisons (UK)

Post by g4qber »

https://www.fueleconomy.gov/feg/topten.jsp

EPA Top 10 efficient EVs
One of the reasons I got the SR+

https://ev-database.org/compare/efficie ... -efficient
This sorts by efficiency
2020 Model 3 SR+ - Delivered Fri 17 Jan ‘20 - k kms 60
2009 Tango - http://www.evalbum.com/211
Nagaman
Groupie
Posts: 208
Joined: Wed, 20 Nov 2019, 05:17
Real Name: David

Re: EV comparisons (UK)

Post by Nagaman »

g4qber wrote: Wed, 03 Jun 2020, 18:10 https://www.fueleconomy.gov/feg/topten.jsp

EPA Top 10 efficient EVs
One of the reasons I got the SR+
Me too
The energy graph can be addictive
Post Reply