Best Winter Advice

All CUPRA Born related discussions
monkeyhanger
Posts: 577
Joined: Tue May 31, 2022 8:12 pm

Post by monkeyhanger »

dickyp wrote: Sat Jan 27, 2024 6:47 pm It’s an interesting one and as ever I feel biggest influence on range is driving style. Anticipation and keeping it flowing.

That said clearly cold weather and short journeys reduce the efficiency. In the recent cold snaps on 5mile journeys with heat to 19degC 2.0miles kWh. Extend that and just gets better.

Two 100mile days 50 out and 50 back and 3.1 and 4.1 respectively . Heat on 19 AC on, motorway for 40 each way. Really surprised at the efficiency and at 100% charge at motorway speed at 70, 200miles out of 58kw is where I’m confident.

Off to Sheffield Wednesday next week which is 210 total so will see how it performs.
Never found driving style to be much of a differentiator with the ID3 or Born. In our S3, with my anticipatory driving style to come off the accelerator early rather than brake late, I get about 20% more mpg than the wife who has no anticipation. In the Born though, that regen does a lot to recover wasted energy that would otherwise be heating the brake pads - the difference between us is more like 5%.

The biggest gains in range can be had by slowing down. With a fixed ratio, BEVs aren't very efficient at 70+ mph, whereas my S3 is more efficient at 75mph than it is at 60mph, thanks to its 7th gear.

It's horrible driving on the motorway at 60mph though, jostling with the trucks overtaking each other in 1mph speed differences.

210 miles in the height of Summer doing 70mph on the motorway is doable, if you don't bottle it and charge when you're down to 10%, in the Winter, I don't fancy your chances unless you slow down or it is unseasonably warm e.g. 14C.
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2023 Audi S3 - to avoid rapid charging on long journeys.

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Pugboy
Posts: 46
Joined: Fri May 05, 2023 10:55 am

Post by Pugboy »

Range drops massively when it's cold in my car. Based on local runs and not motorway work I'm 230 in warm weather and as low as 170 when it's really cold (like sub zero).

I drive with the motor in range mode and take it steady. Only press the Cupra button for quick overtakes.

Currently with it being about 6-8c when I charged up yesterday it said 195 range.

The best I have had range wise is when it was 20c so no need for AC or heating, range mode and a 70mph motorway journey and I had a 250 mile range.

The range in warmer weather gets me in to my office (167) or to my grandparents (155). However in the middle of winter that makes it very tight.
Born V2 58 E-Boost
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dickyp
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Joined: Tue Jul 11, 2023 6:42 pm

Post by dickyp »

How old and which software are you on?
Since we are 5 degrees plus range is a consistent 210miles. Speed is indeed a big factor and as you say above 70 it drops off.
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JBorn
Posts: 72
Joined: Fri Nov 24, 2023 9:50 am

Post by JBorn »

Charged up to 100% this morning. I have a 2022 V3 77kWh eboost with 27000 miles on the clock

Temp was 7-9 degrees C

Car preconditioned to 21 deg C

A/C on 18 deg C. Heated seat lvl 1, steering wheel lvl 1. Just me, the driver. 1 small suitcase.

I rarely rapid charge. Have AC charger both ends

25 miles on rural roads driving very economically compared to usual
81 miles of 80mph indicated
81 miles of 73mph indicated

Only 3% remaining at 2.8mi/kWh over 187 miles

187miles / 2.8mi/kWh = 66.785kWh
Add the remaining 3%... 66.785kWh / 0.97 = 68.85kWh total actual capacity 100% - 0%

If I'm right that's 68.85kWh actual/77kWh design capacity = 89.5% of design capacity so 10.5% degradation. Yay!

That's 8kWh disappeared of the "usable" capacity... so I am going to have a lot of fun next winter I'm sure!

Not sure if my usable capacity will increase when the weather warms a bit :shock:

20240130_065859.jpg

phope
Posts: 48
Joined: Fri Sep 22, 2023 4:36 pm

Post by phope »

Surely your sustained distance at 80mph is a range killer here?
Cupra Born | V2 | 77kWh E-Boost | Geyser Silver | North East Scotland
monkeyhanger
Posts: 577
Joined: Tue May 31, 2022 8:12 pm

Post by monkeyhanger »

Jakester wrote: Tue Jan 30, 2024 3:34 pm Charged up to 100% this morning. I have a 2022 V3 77kWh eboost with 27000 miles on the clock

Temp was 7-9 degrees C

Car preconditioned to 21 deg C

A/C on 18 deg C. Heated seat lvl 1, steering wheel lvl 1. Just me, the driver. 1 small suitcase.

I rarely rapid charge. Have AC charger both ends

25 miles on rural roads driving very economically compared to usual
81 miles of 80mph indicated
81 miles of 73mph indicated

Only 3% remaining at 2.8mi/kWh over 187 miles

187miles / 2.8mi/kWh = 66.785kWh
Add the remaining 3%... 66.785kWh / 0.97 = 68.85kWh total actual capacity 100% - 0%

If I'm right that's 68.85kWh actual/77kWh design capacity = 89.5% of design capacity so 10.5% degradation. Yay!

That's 8kWh disappeared of the "usable" capacity... so I am going to have a lot of fun next winter I'm sure!

Not sure if my usable capacity will increase when the weather warms a bit :shock:
Can't fault your maths, but there maybe a few other things at play:-

1. Rounding errors, that "2.8 miles per kWh" could be 2.75 in reality, that would get you up to 70kWh capacity with your 3% (which could actually be as high as 3.49%)

2. Perhaps the car is keeping 3kWh or similar in reserve to give you a realistic emergency 10 miles in a low output/economical mode, so you'd only be 4kWh shy of proper with 1 taken into account also?

I really don't know about point 2, I'd expect a "reserve" to be in place, but don't know how much as I haven't driven it to a standstill. I once drove my old 2009 Scirocco TDI170 dry to see how far it would go (I had a full Jerry can on board) - it did 28 miles past zero, probably 3l from what was a 50l tank (6%).
2022 V2 E-Boost L-Tech Pack - Aurora Blue
2023 Audi S3 - to avoid rapid charging on long journeys.

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JBorn
Posts: 72
Joined: Fri Nov 24, 2023 9:50 am

Post by JBorn »

phope wrote: Tue Jan 30, 2024 4:22 pm Surely your sustained distance at 80mph is a range killer here?
Yup. Although, when I first got the car i used to do the same trip doing around 120 miles of sustained 85mph... 25 miles of rural (50-75mph varied) and about 42 miles of 74mph indicated. On that same trip I would get there with 11 - 19%, although that was at 13 - 16 deg C

My second trip back home I stuck to about 74mph and got home with 27% remaining from 100% (187 miles)

I've never seen anything like that since even with the same speed, optimum temps and careful driving. Nowadays I get back home with about 6-11% remaining. We'll see what it gets back up to in summer...

All you can do when doing motorway miles really is see what your current mi/kWh is and multiply by your current kWh remaining to get the real range and slow down accordingly... hence I slowed to 74mph to get there with a small buffer.

I've never got there with as low as 3% before and I've done it in much colder weather at higher speeds. Hopefully there was strong winds in play.

I got it as a "ex demo" at 6mo old and 3500 miles so I imagine it got ragged and probably charged to 100%... it was used as a Cupra franchise employees' car.
monkeyhanger
Posts: 577
Joined: Tue May 31, 2022 8:12 pm

Post by monkeyhanger »

I think it's a fair bet that your ex-demo would've spent most of its time sat at 100% charge between test drives. Every time I have put the Born or the ID3 before it into the garage for warranty work, it came back with 100% charge.

I don't think there's such a thing as a ragged BEV though. ICEVs need to be run in properly, the difference between one well run in and a bad run in is huge in terms of power, mpg and oil consumption. BEVs are just so consistent in output/efficiency. We had 2 ID3s, then 2 Borns (got rid of 1 of them), and they all did the same efficiency when driven the same way in the same temperatures/conditions.
2022 V2 E-Boost L-Tech Pack - Aurora Blue
2023 Audi S3 - to avoid rapid charging on long journeys.

Octopus referral: https://share.octopus.energy/lush-fawn-565
dickyp
Posts: 37
Joined: Tue Jul 11, 2023 6:42 pm

Post by dickyp »

58kw V2 with just shy of 800miles.
99% charge, left at 07.30 at 1 degree C and there had been a. Light frost over night.
Telford to Sheffield 120miles one way, issue one got stuck on M6 toll for 2hours of slow shunting with heat etc. arrived at 49%. Motorway run, M54, Toll, A38, M1. Silly as it sounds it’s largely uphill most the way!
Coming back decided to see what going across country, A roads but across the top of the peak district. Very windy for sure and some big climbs but equally big drops.
Hone after completing 190miles and have 8% remaining 16miles.
Green bar didn’t get to full until 3hrs in so battery was definitely cold.
Motorway / A38 was 70 and A roads coming back followed speed limits.
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JBorn
Posts: 72
Joined: Fri Nov 24, 2023 9:50 am

Post by JBorn »

I always floor it now for the last 5 miles before I get to my rapid charger to get the battery nice and warm... probably a good idea to do for a bit longer as well if it's colder than 0C

I didn't know if was just my imagination or whether it really did make a difference... I always usually get 125kW+ now though... whereas even back in warmer months i was topping out at 95kW, sometimes as low as 30-40kW

I guess it depends who's paying for the charge too... here's a really extreme example of what I mean with the same hardware on the ID4:

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