MG4 Xpower times vs battery

[Chrisdriving]

Would be interesting to know, the RWD cars are what 170kW max?
So we are looking at double the power draw.

 

[bedsev]

35% charge (it's a coincidence that my phone was also 35%), could only get 6s with ecs on, turned it off and got 3.78.

Does feel slower than higher battery though, my stomach didn't go over.

 

[Chrisdriving]

Certainly sounds like BMS managing cell voltage drop, my Model 3 will pretty much do the same 0 to 60 regardless of SOC, there is no power limit even under 10%.
I want an X Power but no interest in keep pushing the 0 to 60 so this would be of no concern to me, i spend 95% of my time in chill mode on the Tesla and would be in normal with a light foot on the X Power equally.
But will follow with interest.

 

[tsedge]

Mmm have we had a pack tear down yet? I am convinced the battery is different, i suspect its using bigger interconnects and relays etc. also on mass the batteries would have been matched to their operation , to then ask the battery to pull double the amps and then slap a warranty on it ? I suspect the may at the very least have picked a slightly diff chem , or cooling. Im yet to have cooling issues slow the car down. im talking some hard driving too. Im leaning on some differences without doubt. Capacity, same yes, uprated interconnects yes, different chem , or cream of crop cells.

That presumes the pack wasn't originally designed for the XPower. I think it was and cooling sized accordingly as it came out within a year of the original launch.

 

[salty]

On the way back from my service today, I managed to find a bit of clear road and saw 4.6 to 60mph at both 60% and 50%

Edit: Forgot to turn off ESC

4.6! ? Get rid! ?

 

[Matt x power]

View attachment 28377

35% charge (it's a coincidence that my phone was also 35%), could only get 6s with ecs on, turned it off and got 3.78.

Does feel slower than higher battery though, my stomach didn't go over.

Strange how turning off traction control made a huge difference at low battery percentage??

 

[bedsev]

Strange how turning off traction control made a huge difference at low battery percentage??

It may have made a big difference at high percentage too, I've not timed any other launches

 

[Blindin]

Was just having a look at the certificate of conformity and it has 2 power values for the electric motors
Maximum net power Front:150kW at 7000rpm Rear:170kW at 6000rpm
Maximum 30 minutes power Front:68kW at 8000rpm Rear:84kW at 8000rpm

No idea what this means in the real World, but interesting that the front and rear motors are giving max output at different rpm

The power curve / how its delivered would be more interesting to see. I'd personally like to have more from the rear as I don't think they've quite nailed the bias between them. Remember that they are not linked, so the front is only really assisting.

On the way back from my service today, I managed to find a bit of clear road and saw 4.6 to 60mph at both 60% and 50%

Edit: Forgot to turn off ESC

How did you time it? That in its own is still 1 second quicker than mine.

Strange how turning off traction control made a huge difference at low battery percentage??

I haven't tested between on or off. I've always had it on. I've tried playing around a little with it off, but I haven't really felt the need. Granted I'm mid 40's now and luckily got to my stupid stuff in fun rear wheel drive and hot hatches from the late 70's and through the 90's when there weren't all the cameras around. I miss cars which allowed you to make your own decisions. I find this like driving the old Daytona arcade game when the steering wheel used to try and add weight.

Mmm have we had a pack tear down yet? I am convinced the battery is different, i suspect its using bigger interconnects and relays etc. also on mass the batteries would have been matched to their operation , to then ask the battery to pull double the amps and then slap a warranty on it ? I suspect the may at the very least have picked a slightly diff chem , or cooling. Im yet to have cooling issues slow the car down. im talking some hard driving too. Im leaning on some differences without doubt. Capacity, same yes, uprated interconnects yes, different chem , or cream of crop cells.

Not sure if you get the 7 year warranty there like we do. I don't expect the car to last past that anyway and see all these more modern cars as a through away item at 10 years. I'd say the motors and controls will be going into custom builds once the car falls apart. Hopefully batteries will be a lot cheaper by then too.

 

[Blindin]

Certainly sounds like BMS managing cell voltage drop, my Model 3 will pretty much do the same 0 to 60 regardless of SOC, there is no power limit even under 10%.
I want an X Power but no interest in keep pushing the 0 to 60 so this would be of no concern to me, i spend 95% of my time in chill mode on the Tesla and would be in normal with a light foot on the X Power equally.
But will follow with interest.

I generally don't launch this and normally just drive sensible. But........ I've paid a premium for the sports model; it should perform as it was intended regardless of how I chose drive it. I believe I have an issue with the car, so trying to get it sorted. MG dealer say there is no issue, but if it can't get any where near the performance it should, then I would've gone for a different, cheaper model. I only bought this one as it was supposed to be quick.

 

[Blindin]

So a few timed runs I've done. Granted, its only from the phone app, so they won't be 100% accurate.
I'm going to try and log a few more details, such as the mode, temp, esc and power availability.
The temp has been between 9 at the lowest and about 20 Celsius; 15 being around the normal for 80% of these runs.
Ignore the regen, I'm also noticing that my regen varies widely. Sometimes it works, others I need to get on the brakes.

Battery %	available power	0-100	Launch available	regen		Temp
10​		7​
19​	64​	7​		not effective
24​	89​	5.9​	66​	seemed ok
27​		6​
29​		6​
29​		6​
34​		5.7​
47​		5.4​
56​		5.1​	66​		sport esc off
56​		5.3​	66​		sport esc off
57​		5.4​	66​		sport esc on
60​		5​
68​		4.8​
70​		5.3​
79​		5.6​	66​		custom sport	9​
84​		5​
98​		3.9​

 

[KGoogle]

managed a 4.1 50% soc and esc off

 

[topperharley]

It's better to film the speedo and time the video with a crono. Just play the video at 0.25x of speed so you can be more precise.

The speedo is on par with GPS. Take the time from 1 to 100 (=62 mph).

I managed 4.0 sec at 65% charge. Sport ESC ON.

 

[Blindin]

It's better to film the speedo and time the video with a crono. Just play the video at 0.25x of speed so you can be more precise.

The speedo is on par with GPS. Take the time from 1 to 100.

I managed 4.0 sec at 65% charge. Sport ESC ON.

How do you film it? Its a bit hard on your own and trying to use the phone. I also don't want to get caught by police. Does track mode have any timing? From what I have seen there really isn't much use to it.

 

[Matt x power]

So looking at the whole picture you pretty much have to keep it fully charged if you need full power

 

[ilukey77]

I think you also need to look at tyres , road surfaces , condition's etc etc
So many factors that make up your 0-100km/ 62mph times ..

I’ve noticed trying to push 320kw /600nm through stock tires has varied results ..

I’m always rocketing off at the lights ( some say it gets old but nope when you leave that high end Audi or 340 kw R8 Holden club sport wondering what just happened)

While I’ve not timed my 0-62mph times I would say 8 times out of 10 I’ve lost traction to some degree be it terrible and esc traction control is struggling to keep traction to small chirps in the dry..

Any loss of traction is going to negatively affect times either through slippage or esc fighting to keep traction

Better tyres will help traction in all situations ( pilot sport 5s will be a massive upgrade) be it straight line performance and handling.

but be aware there’s a limit unless you’re going to put super wide boots on it say 265 or 275 (which is obviously not possible without flared guards ) there are limitations..

Most cars pushing anywhere near the power the X power is are on wider tires.

 

[Bricktop X PWR]

We shall soon see!

I've got a Dragy coming in the post and PS5's.

I will spend a day getting times through the whole battery percentages and will post up the videos when done.

 

[topperharley]

Sticky tires negatively affect range and high-speed acceleration.
Here in Italy, only 235 45 R18 are allowed on the vehicle registration document. I wouldn't go for wider tyres, the acceleration and handling are enough for my usage. Next set will be higher end but with an eye at the rolling resistance.

 

[Blindin]

I think you also need to look at tyres , road surfaces , condition's etc etc
So many factors that make up your 0-100km/ 62mph times ..

I’ve noticed trying to push 320kw /600nm through stock tires has varied results ..

I’m always rocketing off at the lights ( some say it gets old but nope when you leave that high end Audi or 340 kw R8 Holden club sport wondering what just happened)

While I’ve not timed my 0-62mph times I would say 8 times out of 10 I’ve lost traction to some degree be it terrible and esc traction control is struggling to keep traction to small chirps in the dry..

Any loss of traction is going to negatively affect times either through slippage or esc fighting to keep traction

Better tyres will help traction in all situations ( pilot sport 5s will be a massive upgrade) be it straight line performance and handling.

but be aware there’s a limit unless you’re going to put super wide boots on it say 265 or 275 (which is obviously not possible without flared guards ) there are limitations..

Most cars pushing anywhere near the power the X power is are on wider tires.

Absolutely, I'd like to think that we would all be aware that the traction is essential at laying it down on the road, however, MG have given the performance of 3.8 seconds, it should be able to achieve this is in standard form on a good road surface. Obviously, you're not going to hit it on a wet / gravel surface. This is more about getting benchmarks across a wider range of vehicles and situations. I'd imagine Bricktop will be getting some nice results on a sticky track. To be honest, I think I have an issue with mine, so trying to get a benchmark so I can go back to the dealer with proof.

 

[topperharley]

This test was made at -15/-20°C for the MG4 (row 9)
so with +20°C results will be better.

 

[Bricktop X PWR]

Minus 15!!!

My car would be really, really slow on account of me not leaving the house!!!?