At what SOC is one pedal driving available?

[ChrisR]

I recently got the base model MG4 (called Excite 51 in Australia, SE SR in UK) and though initially not expecting it to have one pedal driving (OPD) found that the latest update before delivery indeed made it a feature of even this model. I got used to the subtly different driving style it needs and became a firm fan even though I'd previously said I could live without it.

After my first charge to 100%, upon restart I got a message when selecting OPD 'Unavailable, low charge warning' and there was no appreciable regen braking either, with a similar warning (which flashed off too quickly for me to record). As the SOC reduced to about 96% regen braking kicked in again but OPD is still unavailable now I'm down to 93%. I would have thought it would only require the same battery buffer.

Does anyone know what SOC is required for OPD to be operational, and perhaps is it different for the different battery types (51 kW LFP and 64-77 kW NMC)? Or do I have a different problem?

Edit: turns out it's 89% (at least on my car)

 

[tsedge]

I recently got the base model MG4 (called Excite 51 in Australia, SE SR in UK) and though initially not expecting it to have one pedal driving (OPD) found that the latest update before delivery indeed made it a feature of even this model. I got used to the subtly different driving style it needs and became a firm fan even though I'd previously said I could live without it.

After my first charge to 100%, upon restart I got a message when selecting OPD 'Unavailable, low charge warning' and there was no appreciable regen braking either, with a similar warning (which flashed off too quickly for me to record). As the SOC reduced to about 96% regen braking kicked in again but OPD is still unavailable now I'm down to 93%. I would have thought it would only require the same battery buffer.

Does anyone know what SOC is required for OPD to be operational, and perhaps is it different for the different battery types (51 kW LFP and 64-77 kW NMC)? Or do I have a different problem?

I don't know the percentage charge for OPD to kick in but it is definitely normal for it not to be available at 100% state of charge. For any regen to work, the battery needs space to charge up.

 

[ChrisR]

So it seems no one knows or has come up against this issue. After further searching I've found two mentions on other forums, one saying OPD is only available below 80% SOC and another saying 90%. Can anyone confirm either?

 

[ChilledMatt]

So it seems no one knows or has come up against this issue. After further searching I've found two mentions on other forums, one saying OPD is only available below 80% SOC and another saying 90%. Can anyone confirm either?

I don't have a definitive answer but when I test drove the Trophy
the dealer said regen does not work above 90% soc.

 

[fnegroni]

So it seems no one knows or has come up against this issue. After further searching I've found two mentions on other forums, one saying OPD is only available below 80% SOC and another saying 90%. Can anyone confirm either?

I’ll check on my next outing at 100%.
From memory regen per se on my SR kicks in at 97% but whether it’s level 1,2 or 3 I can’t remember.
I take OPD requires a good amount of headroom to ensure proper operation.

 

[SimonS]

SR LR here. I had the same issues above when I collected the car and it was at 100%. I tried it again around the low 90's and it worked and it was working today at 95% after a test charge on Ionity..

 

[ChrisR]

Thanks @ChilledMatt @fnegroni MG4 SE SR gen1 and @SimonS, it looks like I might have to wait for 90%. I'll check again today (currently at 93%). Also it looks like maybe the NMC battery in the LR is different due to the different buffer required for 'full' charge.

I'll probably charge to only 90% from here on, unless I really need it for a long trip, as I want to have OPD always available around town.

 

[pollenface]

I've had it work around 96% ... not very strong though

 

[ChrisR]

I've had it work around 96% ... not very strong though

Do you mean regen braking or one pedal driving? I've had regen kick in again at 96% and not very strong but one pedal driving is either on or off.

Aha! Problem solved. OPD is only available above 89% SOC. Or at least that's the case on the Excite 51 (SE SR in UK) with the latest update. It finally allowed me to set it today after getting below 90%. I guess I'll only be charging to 89% for regular driving from now on.

 

[Mikalosh]

So it seems no one knows or has come up against this issue. After further searching I've found two mentions on other forums, one saying OPD is only available below 80% SOC and another saying 90%. Can anyone confirm either?

It's definitely not below 80% it's come on at 94% on my Trophy LR 2nd Gen

 

[DamianR]

So it seems no one knows or has come up against this issue. After further searching I've found two mentions on other forums, one saying OPD is only available below 80% SOC and another saying 90%. Can anyone confirm either?

Even MG don't know! They initially said it was 85% or less, but I get the error message intermittently all the time at battery levels less than this. Besides, the error message itself is incorrect. It should say "unavailable, HIGH charge power" whoever set that up is absolutely thick

 

[DamianR]

Even MG don't know! They initially said it was 85% or less, but I get the error message intermittently all the time at battery levels less than this. Besides, the error message itself is incorrect. It should say "unavailable, HIGH charge power" whoever set that up is absolutely thick

I've had the car back in 4 times now and it's still giving the error message intermittently. They've now said it depends on all kinds of things such as battery level, temperature etc. It's a very badly designed system if you ask me

 

[DamianR]

I've had the car back in 4 times now and it's still giving the error message intermittently. They've now said it depends on all kinds of things such as battery level, temperature etc. It's a very badly designed system if you ask me

I NEVER had that problem with the Nissan leaf. OPD worked all the time, even at 100%. The leaf is a far superior car. The MG feels like like a prototype

 

[pecker]

I NEVER had that problem with the Nissan leaf. OPD worked all the time, even at 100%. The leaf is a far superior car. The MG feels like like a prototype

Agreed, my 40kw Leaf was a much better car, doesn’t have all the bells and whistles of the MG but works as it should.

Will never purchase another MG and possibly not another EV.

The MG is the second terrible EV I’ve owned in a row now.

Leaf was great, ID3 & MG4 both terrible

 

[JonnyG]

Its always been available (OPD) at a consistent 89% or below for me (using high regen).

 

[tsedge]

Even MG don't know! They initially said it was 85% or less, but I get the error message intermittently all the time at battery levels less than this. Besides, the error message itself is incorrect. It should say "unavailable, HIGH charge power" whoever set that up is absolutely thick

I think that's an unfortunate mistranslation that just needs correcting in the error message.

I've had the car back in 4 times now and it's still giving the error message intermittently. They've now said it depends on all kinds of things such as battery level, temperature etc. It's a very badly designed system if you ask me

It is new to MG and also a retrofit (originally the MG4 came without it), so it will probably take them a while to get it working well.

I NEVER had that problem with the Nissan leaf. OPD worked all the time, even at 100%. The leaf is a far superior car. The MG feels like like a prototype

The Leaf has had 13 years of development so is very polished. MG will get there in time.

I agree that OPD doesn't feel like a mature feature but there's plenty else about the MG4 that is great.

 

[tsedge]

Agreed, my 40kw Leaf was a much better car, doesn’t have all the bells and whistles of the MG but works as it should.

Will never purchase another MG and possibly not another EV.

The MG is the second terrible EV I’ve owned in a row now.

Leaf was great, ID3 & MG4 both terrible

Why did you move on from the Leaf then? Just curious.

Both the ID3 and MG4 are new platform first vehicle departures for the makers. They are going to have issues until the platforms mature.

Nissan has the benefit of more than a decade of refinement. If you are looking for cars that are that well developed then probably a Tesla would be the obvious step up.

 

[pecker]

Why did you move on from the Leaf then? Just curious.

Both the ID3 and MG4 are new platform first vehicle departures for the makers. They are going to have issues until the platforms mature.

Nissan has the benefit of more than a decade of refinement. If you are looking for cars that are that well developed then probably a Tesla would be the obvious step up.

I’m moved from the Leaf because the battery size was starting to become a pain when my commute increased, they had a 62kw battery available but without battery cooling you often ran into “rapidgate” issue after 2 DC charges so wasn’t the car for me.

I hoped a large manufacturer like VW would produce a better car than the ID turned out to be but I was left disappointed.

Car wise the MG is exactly what I expected, however I’m very disappointed with support from MG, simple things like updates appear to be like mission impossible, I would even be happy to pay for the infotainment update, but that’s not possible.

I may end up with a Tesla, my wife has one for her company car and the software is amazing, however they still haven’t cracked how to build a good quality well made car & tbh they haven’t been doing car making for long so all in all I think they are doing well, just not for me at the moment.

 

[tsedge]

Yes, MG need a better tech/update system, better communication and better support. It is these things that currently have me questioning whether I will have another MG.

 

[pecker]

Yes, MG need a better tech/update system, better communication and better support. It is these things that currently have me questioning whether I will have another MG.

Agreed, their current approach is going to impact them in the future.

Very short sighted, if things don’t change rapidly I won’t even consider another MG