MG ZS Hybrid+ high engine revs

[Alb]

Have a read of this thread:

B

Thread 'MG ZS Hybrid+ high engine revs'

Dec 23, 2024

My new MG ZS trophy hybrid is revving very high on some inclines, is this correct. Thanks.

• Bill Mitchinson
• acceleration accelerator average driving engine fault feature freeway hello highway hybrid inclines journey long journey mg zs mg zs hybrid+ normal overheating regulator rev revs rpm speed test drive trophy vibrates zs
• Replies: 155
• Forum: MG ZS Hybrid+ Forum

 

[Hybrid Ann]

What is a regulator? Never heard of that.

 

[Bruno]

May mean the cruise control?

 

[steveny]

Just got my car back, it wasn’t even in 24 hours. They said my car had a recall for an update that would sort all the issues I stated, revving, pedal vibration, hardly switching to EV, and so far so good, it drove perfect on the way home. Fingers crossed it stays that way. They didn’t state which update it was but it definitely is driving smooth now. I took mine to Glyn Hopkin Buckhurst Hill in case your garage is being unhelpful you could call them for advice.

Hi Kirsty, I see that you had your car updated a week ago. Had the pedal vibration returned since then or has it completely gone? Thanks!

 

[kirsty87]

Hi Kirsty, I see that you had your car updated a week ago. Had the pedal vibration returned since then or has it completely gone? Thanks!

Well, last night it did, was doing about 38mph, Revs went up to over 4000rpm and vibration came back. Update didn’t last for long . Will test again today on the same roads.

 

[kirsty87]

Well, last night it did, was doing about 38mph, Revs went up to over 4000rpm and vibration came back. Update didn’t last for long . Will test again today on the same roads.

Still the same

 

[annoyed]

had my new ZS trophy hybrid for 3 weeks and have the same over revving issue.
I Contacted Arnold Clark service department and was told it was known issue and mg would contact me about a recall and that it was ok to drive .after speaking to salesman and assistant manager and finding it hard to get my head round having to manage how I went up hills and the fluctuating revs and wanted to return the car for a full refund I was told it was a characteristic of this model and refund would be forthcoming. There was no mention of this characteristic when I bought the car . Still waiting for a recall

 

[Jockster]

At the risk of repetition.
Keep in mind that the ‘engine’ is also providing electrical power for other uses. For example air conditioning, fans, heated seats/steering wheel, lights, etc.
If you look at the dash power distribution display, you will see how the ‘power’ system continually monitors and controls power distribution.
This is the worst time of year, in warmer times the engine will not be needed as much and the revs will be lower.

I believe fully that electrics bar the heater,fans and AC are from the 12v battery. I keep AC off and revs only affected by it. Steering wheel unit. Steering wheel and heated seats not affected.

 

[steveny]

Still the same

Sorry to hear that your issue is not resolved. If you do get a resolution to this from your dealer then I'd be interested to hear what they did.

 

[nicho12]

At the risk of repetition.
Keep in mind that the ‘engine’ is also providing electrical power for other uses. For example air conditioning, fans, heated seats/steering wheel, lights, etc.
If you look at the dash power distribution display, you will see how the ‘power’ system continually monitors and controls power distribution.
This is the worst time of year, in warmer times the engine will not be needed as much and the revs will be lower.

Hi Noel what am i looking for on the dash power display.

 

[Ken K]

I took my car into the dealer today so they can look at this issue and update the software as required. They gave me a new ZS petrol courtesy car, it has the same 1.5 litre engine as the hybrid. There is a fairly steep hill on my route home which always causes my vehicle to perform the overrevving nuisance. This car has a five speed manual gearbox and it was not happy climbing the hill in fourth gear even though I was only traveling at the 40 mph speed limit. Pressing the accelerator didn't make any difference so I had to change down to third gear, much higher revs but it did seem to be better. The hybrid must be a heavier car than this version so if I need to be in a lower gear in this vehicle it does not surprise me that the hybrid needs to drop down a gear or possibly two.
Another odd problem I noticed last week, I took my car for its first long drive about four hours in total, after about two hours I noticed an noise coming from the loudspeaker on my righthand side. It sounded like a bong repeated every second not very loud but annoying. I stopped the car about an hour later and when I restarted it the sound had stopped. I drove home a week later and the same sound started again after a couple of hours and continued all the way home. Something else the garage is looking into.

 

[Robert1957]

I took my car into the dealer today so they can look at this issue and update the software as required. They gave me a new ZS petrol courtesy car, it has the same 1.5 litre engine as the hybrid. There is a fairly steep hill on my route home which always causes my vehicle to perform the overrevving nuisance. This car has a five speed manual gearbox and it was not happy climbing the hill in fourth gear even though I was only traveling at the 40 mph speed limit. Pressing the accelerator didn't make any difference so I had to change down to third gear, much higher revs but it did seem to be better. The hybrid must be a heavier car than this version so if I need to be in a lower gear in this vehicle it does not surprise me that the hybrid needs to drop down a gear or possibly two.
Another odd problem I noticed last week, I took my car for its first long drive about four hours in total, after about two hours I noticed an noise coming from the loudspeaker on my righthand side. It sounded like a bong repeated every second not very loud but annoying. I stopped the car about an hour later and when I restarted it the sound had stopped. I drove home a week later and the same sound started again after a couple of hours and continued all the way home. Something else the garage is looking into.

It could have been the 'take a break' warning. I've had that and a small coffee cup flashes up as well

 

[Ken K]

Thanks that makes sense.

The dealer claims they tested my car yesterday and were unable to reproduce the overrevving problem. My car has had all the available updates including the 052 one before I took delivery. Needless to say on the way home from the dealer the car went into overrev mode as I started climbing the first hill.

 

[Noel]

Not doubting what you say, but could you be more specific when you say “overrev mode” please. 3000, 3500, 5000. I only ask as it appears to me, that in order to prevent “power loss” when trying to accelerate, PD052 prevents complete depletion, by ensuring the battery always has at least two bars of battery capacity.
This results in higher revs after, for example climbing hills, when the revs will be 3/3500 until the battery is sufficiently replenished.

 

[Tendirt]

Hello everyone
I'm new here
Just got registered
Awaiting my zs max hybrid in the days coming
I am pretty amazed by the price and the features it adds in a reasonable price in comparison with its competitors

I wonder, does everyone come up with the high Rev thing or it's random? Nothing came up in 4 test drives I've done before I lock in to it... When I've asked a sales representative about it, he said that it's Okey, and this is happening in order to fill up the battery etc and also it's a common hybrid feature and so...

Thing is I've never had one before and idk how safe this sounds about the engine in matter of years coming... Sounds pretty unsafe for the engine and the transmission system that car is working at 5k+ rpm...

 

[steveny]

Had the ZS hybrid+ since December and it started sticking at 2000rpm and accelerator vibrates.
I have to stop for to go into EV mode for it to reset but even crawling at 10 mph still 2000 rpm & vibrating pedal until I stop. This is the 3rd time it’s happened now. Anyone having same problem, going to phone MG dealer tomorrow.

Hi there, was the MG dealer able to help with this?

 

[David38]

Highest revs I've had is 3.1

At 1050 miles I've just run it in, 900 miles.
Never been on motor yet but tomorrow will.

Enjoy the car as we do.

 

[salty]

 

[Tendirt]

Highest revs I've had is 3.1

At 1050 miles I've just run it in, 900 miles.
Never been on motor yet but tomorrow will.

Enjoy the car as we do.

Oh great! Let us know your consumption as well I see people hitting easy high mpg or low l/100km
I hope I can be getting around 5lt-5.5lt/100km honestly...
My daily route consists of a 45km distance 65% highway and 35% city

 

[Ken K]

The revs vary and are not dependant on the steepness of the hill. Generally the longer the hill the higher the revs. I regularly visit a friend the journey involves climbing three long but not very steep hills all of which have a 40 mph limit. At the bottom of the hill at approximately 40 mph the revs will be around 1400 as the car climbs the hill normally about two thirds of the way up the revs increase instantly to around 5000, speed does not increase. Even when I reach the top of the hill and am going down the only way to reduce the revs is to release the throttle, either the revs reduce to around 1400 or the car switches into EV mode. This is my first hybrid so I am still learning, pity the manual is absolute rubbish. I am finding the forum helpful so keep up the good work folks.