Hyundai IONIQ 5 N - am I mad?

[fatjon]

PetrolHeadInRecovery said:

I guess the (near) "fade-free" is/was relative to the competition.

Regarding the power figures on different levels of charge: are there published numbers anywhere?

I think the fade is more related to battery temperature than charge level. At 69% the heaters are disabled, then the performance drops as they lose heat. I suppose on a hot summer day that’s not much of a problem but doing 60mph on a cold day chills them in no time flat. It also takes forever to warm them on a cold day while in motion. We’re talking 30-40 minutes at 10c while in motion. By which time you dip under the 70% threshold!

[PetrolHeadInRecovery]

fatjon said:

PetrolHeadInRecovery said:

I guess the (near) "fade-free" is/was relative to the competition.

Regarding the power figures on different levels of charge: are there published numbers anywhere?

I think the fade is more related to battery temperature than charge level. At 69% the heaters are disabled, then the performance drops as they lose heat. I suppose on a hot summer day that’s not much of a problem but doing 60mph on a cold day chills them in no time flat. It also takes forever to warm them on a cold day while in motion. We’re talking 30-40 minutes at 10c while in motion. By which time you dip under the 70% threshold!

Thank you for the explanation!

On our Ioniq 5, I've seen the battery preconditioning drawing only (or "only") 4.8kW, which is noticeable but not a game-changer (3.2kWh in 40 minutes). This is based on the standard display on the car. The performance optimisation would run the heaters way above that, 15kW? 100% - 70% would be roughly 23kWh. Using that in 40 minutes is almost 35kW average power, I'd imagine a steady 60mph would require only about 20kW, right?

200-odd kW of the standard one is less of a challenge for the battery, so less heating/cooling needed?

Re. acceleration figures (thanks ZesPak!): in some markets you could have an Ioniq 5 with 4WD and a smaller battery, total power 235ps, 0-100km/h 6.1s. The same torque as the large battery 4WD (a second faster), and roughly the same power as the 2WD large battery one (more than a second slower). There might be some weight differences, but IIRC, it was less than 100kg (the ev-database seems to have random numbers for the weight).

Dramatic drop in peak horsepower may or may not have a dramatic impact ton acceleration?

[ZesPak]

PetrolHeadInRecovery said:

Dramatic drop in peak horsepower may or may not have a dramatic impact ton acceleration?

As said, should be barely noticeable below 100km/h as most of these cars are fighting for traction anyway. Could make a huge difference above that though.

[740EVTORQUES]

All I can say is that right down to around 15% charge it's bloody quick, you'd never find it lacking.

[OutInTheShed]

We are talking about 'quick for a car', but should we be a bit concerned that the power available 'varies' and the effect of clogging it at 60mph to overtake might not be the same as last ime you tried to overtake?

6-point something seconds to 100km/h is tidy for a car, but old hat to even a mid-sized, old-tech motorbike.
There's something to be said for a vehicle which responds consistently.

I thought about this today when I witnessed a dodgy B-road overtake, which would have been a whole lot safer done harder/faster.

I was behind in a car, I thought 'I'd have done that on my bike, but not in any any car under 3 litres and it would be a good idea to be in the right gear...'

[ZesPak]

OutInTheShed said:

We are talking about 'quick for a car', but should we be a bit concerned that the power available 'varies' and the effect of clogging it at 60mph to overtake might not be the same as last ime you tried to overtake?

6-point something seconds to 100km/h is tidy for a car, but old hat to even a mid-sized, old-tech motorbike.
There's something to be said for a vehicle which responds consistently.

I thought about this today when I witnessed a dodgy B-road overtake, which would have been a whole lot safer done harder/faster.

I was behind in a car, I thought 'I'd have done that on my bike, but not in any any car under 3 litres and it would be a good idea to be in the right gear...'

Most EV's with that kind of power I've been in have been somewhere between "THIS HURTS" and "HOLY st" above 10% SOC.
At sub 10% some pop up with a message and tell you less power is available, mainly because they go into a battery saving mode.

I don't know how it is with things like the Model 3 SR, which is a fairly quick car but not excessively so. I have access to one so I might try it but I've never had a "oh, battery isn't full, this overtake won't work now" moment.

[740EVTORQUES]

ZesPak said:

Most EV's with that kind of power I've been in have been somewhere between "THIS HURTS" and "HOLY st" above 10% SOC.
At sub 10% some pop up with a message and tell you less power is available, mainly because they go into a battery saving mode.

I don't know how it is with things like the Model 3 SR, which is a fairly quick car but not excessively so. I have access to one so I might try it but I've never had a "oh, battery isn't full, this overtake won't work now" moment.

Very much this.

When I was test driving my car, they kindly just chucked me the keys and said ‘be back by 2pm’

I drove around very impressed with the performance. It was only on the way back to the dealership I realised it had been in ‘normal’ mode the whole time.

I found a quiet bit of road and put it in sport and experienced the Millenium falcon style acceleration for the first time!

And that wasn’t even a GT. I nearly cancelled my GT order that day because the standard car was so good.

You’re not going to be caught short even in reduced power modes believe me.

Edited by 740EVTORQUES on Monday 29th April 19:24

[ZesPak]

OutInTheShed said:

There's something to be said for a vehicle which responds consistently.

Also, you mean if the fuel, temperature, elevation and gear are the same?

I agree it's not ideal that top end is related to SoC, but in my experience overtaking in an ICE, even a very fast one, takes a lot more consideration than the same overtake in an EV. Go skiing in the alps in your ICE and you might lose as much as 30% of your hp.

Same as with taking journeys, it's just other considerations. With an EV you need to plan a bit where you stop, but I've also gotten used to charging wherever I sleep (home, B&B, hotel,...), which I've never had with an ICE. It's all a bit different but far from a simple "it's worse because battery determines horsepower while fuel tank fill rate doesn't".

[ChocolateFrog]

OutInTheShed said:

We are talking about 'quick for a car', but should we be a bit concerned that the power available 'varies' and the effect of clogging it at 60mph to overtake might not be the same as last ime you tried to overtake?

6-point something seconds to 100km/h is tidy for a car, but old hat to even a mid-sized, old-tech motorbike.
There's something to be said for a vehicle which responds consistently.

I thought about this today when I witnessed a dodgy B-road overtake, which would have been a whole lot safer done harder/faster.

I was behind in a car, I thought 'I'd have done that on my bike, but not in any any car under 3 litres and it would be a good idea to be in the right gear...'

What has 6.something got to do with 0-100kmh in one of these?

It'll probably do that with 2% SOC.

[PistonTim]

ChocolateFrog said:

OutInTheShed said:

We are talking about 'quick for a car', but should we be a bit concerned that the power available 'varies' and the effect of clogging it at 60mph to overtake might not be the same as last ime you tried to overtake?

6-point something seconds to 100km/h is tidy for a car, but old hat to even a mid-sized, old-tech motorbike.
There's something to be said for a vehicle which responds consistently.

I thought about this today when I witnessed a dodgy B-road overtake, which would have been a whole lot safer done harder/faster.

I was behind in a car, I thought 'I'd have done that on my bike, but not in any any car under 3 litres and it would be a good idea to be in the right gear...'

What has 6.something got to do with 0-100kmh in one of these?

It'll probably do that with 2% SOC.

Which also begs the question why at 2% SOC is someone planning a big full power overtake??

[Electronicpants]

PistonTim said:

Which also begs the question why at 2% SOC is someone planning a big full power overtake??

Dash in the M6 services carpark on a bank holiday to the last remaining fast charger.