Electric cars - range when thrashed

[spookly]

I was thinking that I have rarely ever seen a Tesla being driven fast, despite them being quite quick. Mostly I see them bimbling along at 60 on the motorway, I guess to conserve range.

If the largest EV batteries are 100KWh, and a fast EV can have a motor capable of well over 300KW..... that gives a flat out run time of <20 minutes.
Of course, you won't be going anywhere near full power all the time.

So, for anyone who does own a fast EV... what is the range like when you give it a good thrash?
With petrol cars you can easily get down to under 1/3 of the normal mpg when driving hard. Is it particularly hard to get a 300 mile range EV to go flat in under 100 miles?

[spookly]

Thanks for the responses :-)
EVs are just about getting to the point where their claimed range would be good enough for my regular use. But, I'm concerned that I'd not get anywhere near the claimed range. I do have a fairly heavy foot, and never get anywhere near the claimed mpg on petrol or diesel cars either.... hence my concern as to whether I'd actually be able to complete a journey. If people are seeing a 40% drop in range in winter then that's even more concerning.

I'd want a all year range of at least 300 miles, or would accept a smaller range if it could be recharged *very* fast.

[spookly]

DJP31 said:

The only car that could get anywhere remotely close to your 300 miles would be a Tesla. My question would be what’s your driving pattern that requires 300 miles before refuelling, and what do you mean by recharged ‘very’ fast?

During the week I mostly work from home, but will also sometimes commute a round trip of over 200 miles when seeing clients.
On weekends I often go away to places in the countryside with little chance of charging a car without significant inconvenience. Ideally, I'd like to be able to go far further than 300 miles. But the most common place I pop to on the weekend is 75 miles each way, and then add on whatever driving around I do when there.

What is the energy usage on the tesla at a motorway cruise at say 95mph? In winter?

Recharged fast? I wouldn't be averse to a 20-30 minute stop every 200 miles. The bigger issue is whether the likes of chargers at motorway services can provide a charge that fast. Do they have specific tesla chargers at motorway services?

[spookly]

gangzoom said:

Range versus Speed for EVs is well documented. Essentially go from 60-80mph and you can kiss 25% range goodbye, add in wind and that figure will be 30%+.



Most of that is due to increase drag as speed picks up.



For 'spirited' driving on a B road the penalty is even higher, as constant deceleration/acceleration really kills efficiency. I did two back to back runs over a 8 mile twisty stretch. One at a 'normal' speed, and one as quickly as I dared given I was on a public road in a 2.5 ton SUV. The 'spirited' run used significant more juice - 70%+!!!

Edited by gangzoom on Tuesday 22 January 21:18

Thanks. Very useful. I suspect with my driving that would see me getting well under 200 miles in ideal conditions from an 85KWh Tesla.
If the motorway is clear then I don't want to drive all the way home at 60mph, 70mph, or even 80mph.

My brother lives in the Netherlands. A journey of around 550 miles, which I normally do overnight to avoid traffic. So if I went to visit in winter in something like a current model Tesla then I'd either have to drive at 60mph and factor in two stops to recharge..... or drive my normal speed and factor in four or five stops to recharge. Or hire a diesel/petrol car for the trip.... which I have done in the past anyway as the cost was cheaper than paying for fuel on a car getting 15mpg.

[spookly]

Anyone know if any of the ferry companies or Eurotunnel have installed charging points for electric cars? Either on the ferry/train or in their car parks?