Welcome to the 2020-2024 MG HS Plug-in Hybrid forum - MG HS PHEV Information

[stevealg]

Hi everyone, new to the forum and new to MG, I bought a 2021 MG HS exclusive PHEV in November, with 25000 miles on the clock, so far it's been great, nice to drive and seems to be economical for the sort of driving I do (140mile round trip to work daily). The only problem I now have is the dreaded "Radio Module Initialising" message that seems to be be quite prevalent! Not overly bothered the radio still works but can't change channels and it's stuck on Heart Xmas which is driving me nuts! Is there an easy fix or does it mean a trip to a dealer to get it sorted under warranty

 

[elmanyo]

Hello,

My name is Andres

I am Spanish user with a MG EHS luxury before the modification of late 2023.

In Spain we call them EHS before the "restyling".

Many Spanish users, including myself, have not had any software update for the car, and we cannot connect via iSmart either.

I'll try to contribute my experiences and knowledge, as much as I know and can.

 

[Rak]

Hi Stuart & All
I'm new to the forum and have recently acquired a 2021 MG HS Hybrid Excite.
It's all good so far, but I have some issues with bluetooth connectivity when playing spotify. Unsure if it's a common problem across this range.

 

[tolz]

Title: MG PHEV 2023 – Battery Draining Quickly Despite Regenerative Braking?

Hi everyone,
I drive a 2023 MG PHEV, which I got back in August 2024. I make it a point to charge the battery regularly, and I typically keep the drive mode set to "Auto."
Here’s what I’ve noticed: after fully charging the battery and going on a round trip of 40 miles or so (mainly at low speeds), the battery ends up nearly depleted by the time I get back. I assumed that since the vehicle uses electric power at low speeds and I also have petrol in the tank, the regenerative braking would help recharge the battery during the drive. But that doesn't seem to be happening, or at least not enough to make a difference.
Is this normal? Has anyone else with the same model experienced this? Just trying to understand if this is expected behavior or if there’s something I should look into.
Thanks in advance!

 

[ronmaz]

Regenerative braking does put a very small amount of charge back into the battery when you are braking, i.e. coasting without touching the accelerator, but you're only braking for a few seconds when going down a hill or slowing down to come to a corner for example. so the amount that goes back in is extremely small.

 

[tolz]

Thanks. Helpful

 

[Willsy]

Hi everyone,

I'm new here, and currently do not own an MG HS PHEV, but am seriously considering buying a second hand 2023 model.

I'm attracted to this vehicle due to its advertised and highly regarded fuel economy and overall value for money. My main concern is that I see a lot of "advertised" economy figures like 1.7L/100km's thrown about the web, but while that sounds amazing, I know that the real-world figures will definitely be higher than this. I imagine those figures above are possibly very achievable if the vehicle is only driven around town day by day in full EV mode (and fully charged overnight of course).

What I'm most curious about is what is the typical fuel economy of this vehicle like during the following long distance trip scenario (knowing of course that everyone's driving experience is unique, landscapes are different, and climates are different. I'm simply curious about personal experiences and averages here).

Scenario:

• You're completing a long distance trip (lets say 500km)
• You have the battery FULLY charged
• You do not have any interior heating or cooling on.
• You're ONLY driving in the default auto hybrid mode the whole journey (Not EV-only mode)

Q.1 - Roughly how long will the fully charged battery provide its "full potential" electric assistance to the petrol engine during the 500km trip, and what is the average/typical fuel consumption during a trip with full electric assist active (e.g 5.5L/100km's)?

Q.2 - Will the battery die within the first 1 or 2 hours of the 500km trip starting?

Q.3 - If the battery were to die mid-trip, for the remainder of that journey, how will the vehicle operate. Will it force the car to run in ICE-only mode, drastically increasing fuel consumption? Again, if this were to occur, what is the average/typical fuel consumption during a trip after full electric assist is no longer available (e.g 7.8L/100km's)?

Q.4 - OR, will the ICE battery regen still provide the EV motor with enough trickle charge to provide "full" or "degraded" electric assistance despite the battery showing empty? And if so, what is the average/typical fuel consumption during a trip after full electric assist is no longer available (e.g 6.5L/100km's)?

Sorry for the complicated matrix of scenarios, I'm trying to better understand how this vehicles hybrid mode operates in the real-world during long trips and the only way to get a moderately accurate answer is to ask those who actually drive an MG HS PHEV.

Thanks if you made it this far in my post

Cheers
Mark

 

[ronmaz]

Q1. Electric assistance is only provided to the ICE when there's any strain on the petrol engine, i.e. when accelerating or going up a hill. If you're driving on a flat road at speed, then the car won't use the electric motor at all, it will rely on the ICE only. If your speed drops below 40kmh-ish then the ICE will switch itself off and use electric power only, and will switch back to the ICE when your speed goes back above 40kmh. If your trip is on a freeway or highway with no stop start driving you'll likely get between 6 and 7 litres per 100km on a 500km trip using the ICE. Those figures of 1.7l per 100km are not achievable using ICE. That would be mostly in electric mode with a small percentage in ICE mode.

Q2. No the battery will not die when you drive using the ICE as the battery is hardly ever used in this mode. In fact if not already at 100% then the battery will slowly recharge during the trip, even in default auto mode.

Q3. The car will never let the battery go totally flat, this could actually damage the battery. It may show 0% percent charge but that just means you can't go into electric only mode. The car will keep a hidden percentage in reserve so it will always have electric power to assist if needed.

Q4. As above, if the electric battery shows 0%, you can't use electric only mode but electric assistance will always be available to help with hill climbs and acceleration.

The PHEV user manual is online. It may be worth a read, it's quite long. Before I bought my PHEV I read it twice, only because there was a 6 month wait between ordering it and receiving it. It's a great car to drive, I've had it nearly 3 years and I love it.

https://cdn.shopify.com/s/files/1/0580/0476/6795/files/HS_Plus_EV.pdf?v=1743469377

 

[New to MG]

Hi everyone,

I'm new here, and currently do not own an MG HS PHEV, but am seriously considering buying a second hand 2023 model.

I'm attracted to this vehicle due to its advertised and highly regarded fuel economy and overall value for money. My main concern is that I see a lot of "advertised" economy figures like 1.7L/100km's thrown about the web, but while that sounds amazing, I know that the real-world figures will definitely be higher than this. I imagine those figures above are possibly very achievable if the vehicle is only driven around town day by day in full EV mode (and fully charged overnight of course).

What I'm most curious about is what is the typical fuel economy of this vehicle like during the following long distance trip scenario (knowing of course that everyone's driving experience is unique, landscapes are different, and climates are different. I'm simply curious about personal experiences and averages here).

Scenario:

• You're completing a long distance trip (lets say 500km)
• You have the battery FULLY charged
• You do not have any interior heating or cooling on.
• You're ONLY driving in the default auto hybrid mode the whole journey (Not EV-only mode)

Q.1 - Roughly how long will the fully charged battery provide its "full potential" electric assistance to the petrol engine during the 500km trip, and what is the average/typical fuel consumption during a trip with full electric assist active (e.g 5.5L/100km's)?

Q.2 - Will the battery die within the first 1 or 2 hours of the 500km trip starting?

Q.3 - If the battery were to die mid-trip, for the remainder of that journey, how will the vehicle operate. Will it force the car to run in ICE-only mode, drastically increasing fuel consumption? Again, if this were to occur, what is the average/typical fuel consumption during a trip after full electric assist is no longer available (e.g 7.8L/100km's)?

Q.4 - OR, will the ICE battery regen still provide the EV motor with enough trickle charge to provide "full" or "degraded" electric assistance despite the battery showing empty? And if so, what is the average/typical fuel consumption during a trip after full electric assist is no longer available (e.g 6.5L/100km's)?

Sorry for the complicated matrix of scenarios, I'm trying to better understand how this vehicles hybrid mode operates in the real-world during long trips and the only way to get a moderately accurate answer is to ask those who actually drive an MG HS PHEV.

Thanks if you made it this far in my post

Cheers
Mark

Hello Mark,
I have the MY23 MG HS + EV (PHEV) in Sydney. With regard to your 2 questions for your 500km journey on open roads / freeways : ONLY driving in the default auto hybrid mode the whole journey (Not EV-only mode), my experience suggests these.

Q.1 - Roughly how long will the fully charged battery provide its "full potential" electric assistance to the petrol engine during the 500km trip, and what is the average/typical fuel consumption during a trip with full electric assist active (e.g 5.5L/100km's)?
BATTERY : The fully charged battery will begin the journey showing 62 km of 'availability'. As you travel at say 100 km per hour, that reading on the 'availability' will drop about 1 for every 12-13 km of travel. So, after your 500km journey you should have a reading on the battery 'availability' of say 62-40 = 22 km. Plenty of battery charge left. The reading on the car should say 2.1 or 2.2 kWh per 100 km of travel. The 500 km run should have used up about 61-64% of the charge, leaving more than one third unused.
FUEL : After this 500 km journey the car could show the petrol consumption reading of around 5.7 to 6 L per 100 km.

Q.2 - Will the battery die within the first 1 or 2 hours of the 500km trip starting?
No. Because in the first 3 hours you will have only done 300 km [@100km per hour] and so the car should still show 36-38 km of 'availability' on the battery.
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The only way to know all this is to do a journey of say half the distance (250km) and take down all the readings of battery _ kWh / 100km and of petrol _ L / 100km.
A lot will depend on terrain?
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I have never driven in the default auto hybrid mode when the battery is incredibly low, but I expect the car does what it has to (battery is never dropped zero to avoid damage), and the petrol consumption could then be running at around 8L / 100km as it is a heavy car. May be higher 8.5L? Only way to know is to try. Remember to 'reset' for a new journey when the battery is incredibly low so as to get the correct readings when you are almost completely running on petrol.
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I have not found any issues with this 2023 car apart from :
a) on short runs in EV, the ICE kicks in on cold winter mornings, as the cabin heating depends on ICE. I believe this is changed for the 2025 car. The seat heating is not dependent on ICE : nor is the AC - Cooling in summer.
b) the chunky A-pillar blocks visibility on tight turns. I believe this is unchanged in the new 2025 car.