Engine emissions fault

[Scotty Doggy]

Hey all

Had an emissions engine fault since July 2025 , it’s been back to dealers on 2 times , First visit it had a software update and fixed the fault up to November . November they had the car for 1 month , they lent me a car for this period. During this visit they replaced the EGR valve and camshaft sensor , I picked it up last Monday as they had cleared the fault . 5 days later it came back .

I brought the car November 2024 and fault first appeared 7 months later . I’m unsure as to what to do . They had the car for a month which I think is crazy time period and the fault is back so quick

I actually like the car but I can’t keep going back and forth for an issue . Has anyone had this issue actually fixed and stay fixed , also should I start the right to replace or refund .

Thanks

Scott

 

[MG Clive]

To be honest, on this forum, I think more MG3 Owners have had the problem and got rid of the car, than have had the problem resolved. It's a shame, because apart from the emissions issue, and the over-revving, it's a great little car.

 

[Scotty Doggy]

To be honest, on this forum, I think more MG3 Owners have had the problem and got rid of the car, than have had the problem resolved. It's a shame, because apart from the emissions issue, and the over-revving, it's a great little car.

Hi Clive , when you say got rid off the car , do you mean like private sale or they got a refund /replacement from the dealer

I mean how many times will a dealer attempt to fix this problem until they suggest an alternative . It’s my first new car so I don’t really know if I have to say something or wait for them to .

I have a gut feeling that they don’t have full idea of how to fix it

 

[MG Clive]

@KeithS traded his for a BYD.
@Hybrid Ann traded for a ZS Hybrid.
@Radar traded for a Toyota Hybrid.

 

[Scotty Doggy]

@KeithS traded his for a BYD.
@Hybrid Ann traded for a ZS Hybrid.
@Radar traded for a Toyota Hybrid.

Hi again , that’s the confusing part , why would I trade a car that’s got an underlining fault under warranty .

Under consumer law this is text book refund or replace ? Or are the dealer going to go back and forth on this until I give up?

Was no one offered a refund or replacement vehicle ?

 

[MG Clive]

@Koz rejected his, but sometimes I think some people have just had enough of being fobbed off and constantly having to deal with the MG system, so they just want out.

 

[KeithS]

Hi again , that’s the confusing part , why would I trade a car that’s got an underlining fault under warranty .

Under consumer law this is text book refund or replace ? Or are the dealer going to go back and forth on this until I give up?

Was no one offered a refund or replacement vehicle ?

My issue began in Sept 24 (took delivery in May, as one of the first customers), and i was going back and forth for a couple of months. Then in December, after the faulthad vanished for a bit, the dealer contacted me to explain they wanted to fit a new EGR valve. Ironically before the car was booked in the faukt came back.
I have to say i thought it was sorted as the car went more than a year without this fault reappearing, then in October i got a new variation of the fault. This time the battery overheat warning light came on for a few seconds as well. Once again the merry-go-round began again, with the warning coming and going intermittently, and repeated dealer visits. Eventually the dealercwas able to collect the fault codes, and itwas clear they didnt have a clue what was wrong!
This was when I decided I had to get rid of it. Whilst its not unusual to have issues like this, from my forty years of owning new cars, I had never come across a combination of dealer/manufacturer that really didnt give a damn about the customer.
The dealer wanted the car the following week - they had concerns about using the car with the fault, but could not provide a loan car until January!!! So, and having had bad experiences before with MG UK Customer services over this and other issues, i called them without much confidence in them helping. And so it was!!! Being even more unhelpful, disinterested, cant be bothered than previously, they couldnt tell me if they would supply a loan car regarding this problem.
I can honestly say MG UK stand head and shoulders above every other manufacturer i have spoken to, in being utterly hopeless, useless, and to repeat above, completley disinterested in one of their customers being left without transport. To say they took Zero interest in my potential dilemma, would be to compliment them!!!! Terrible, terrible, terrible in every sense, and i would go as far to say, i wouldnt trust them to sell me a tyre valve cap. I can only liken them to buying a 'dodgy motor' from one of the 'dodgiest' 'under the arches' used car dealers!
ONce they got your money, you are on your own. Yes they have to adhere to their warranty, and attempt to fix the car, but i just got the impression that if they could find a way to wriggle out they would!!!
Harsh critisism i know, but never before have i had to suffer the depreciation on selling an eighteen month old car, because of such fundemental and major concerns!!!
BTW the MG dealer that i was using wouldnt even give me a lift to a bus stop or local station if i had dropped the car with them. As ive said before, this dealer is also a Genesis dealer, and when i go there with that car, they are only to happy to offer me collection/delivery and/or a courtesy car.
I suppose the difference is, one is a luxury brand trying to cultivate good customer service, whilst the other simply doesnt give a ----!!!!!
If your interested, i switched to a BYD DOLPHIN SURF EV, essentialy an all EV supermini. So far no issues....

 

[Scotty Doggy]

My issue began in Sept 24 (took delivery in May, as one of the first customers), and i was going back and forth for a couple of months. Then in December, after the faulthad vanished for a bit, the dealer contacted me to explain they wanted to fit a new EGR valve. Ironically before the car was booked in the faukt came back.
I have to say i thought it was sorted as the car went more than a year without this fault reappearing, then in October i got a new variation of the fault. This time the battery overheat warning light came on for a few seconds as well. Once again the merry-go-round began again, with the warning coming and going intermittently, and repeated dealer visits. Eventually the dealercwas able to collect the fault codes, and itwas clear they didnt have a clue what was wrong!
This was when I decided I had to get rid of it. Whilst its not unusual to have issues like this, from my forty years of owning new cars, I had never come across a combination of dealer/manufacturer that really didnt give a damn about the customer.
The dealer wanted the car the following week - they had concerns about using the car with the fault, but could not provide a loan car until January!!! So, and having had bad experiences before with MG UK Customer services over this and other issues, i called them without much confidence in them helping. And so it was!!! Being even more unhelpful, disinterested, cant be bothered than previously, they couldnt tell me if they would supply a loan car regarding this problem.
I can honestly say MG UK stand head and shoulders above every other manufacturer i have spoken to, in being utterly hopeless, useless, and to repeat above, completley disinterested in one of their customers being left without transport. To say they took Zero interest in my potential dilemma, would be to compliment them!!!! Terrible, terrible, terrible in every sense, and i would go as far to say, i wouldnt trust them to sell me a tyre valve cap. I can only liken them to buying a 'dodgy motor' from one of the 'dodgiest' 'under the arches' used car dealers!
ONce they got your money, you are on your own. Yes they have to adhere to their warranty, and attempt to fix the car, but i just got the impression that if they could find a way to wriggle out they would!!!
Harsh critisism i know, but never before have i had to suffer the depreciation on selling an eighteen month old car, because of such fundemental and major concerns!!!
BTW the MG dealer that i was using wouldnt even give me a lift to a bus stop or local station if i had dropped the car with them. As ive said before, this dealer is also a Genesis dealer, and when i go there with that car, they are only to happy to offer me collection/delivery and/or a courtesy car.
I suppose the difference is, one is a luxury brand trying to cultivate good customer service, whilst the other simply doesnt give a ----!!!!!
If your interested, i switched to a BYD DOLPHIN SURF EV, essentialy an all EV supermini. So far no issues....

Well my confidence it’s getting fixed is even lower now , I don’t really have any faith in them fixing it , they gave me a loan car and there not being nasty or anything I just feel they don’t fully know about the car

 

[KeithS]

Well my confidence it’s getting fixed is even lower now , I don’t really have any faith in them fixing it , they gave me a loan car and there not being nasty or anything I just feel they don’t fully know about the car

Well to answer your concerns directly - all the service department does is open a case with MG UK Technical. They then have to wait for instructions as to what to do.
At least the dealer is doing the decent thing in terms of alternate transport, and whilst i dont mean to be impolite about the MG3, i was always left with the impression, thatcwhilst its fantastic value for money, corners have been cut elsewhere.
If you can persevere, because MG have to eventually rectify the fault or come up with an alternative, as they have to honour the warranty. If after a further period of time, i would enquire whether you have legal cover,maybe through a credit card, or household insurance. If so, see if they will take the case up on your behalf. There must be some 'reasonable' time frame legally speaking, in which something solution has to be found.
Good luck, and i for one would be interested in the outcome.
BTW I paid £18,900 for my MG3 TROPHY (Batterseablue metalic), and in essence got £14,000 eighteen months later.

 

[Scotty Doggy]

Well to answer your concerns directly - all the service department does is open a case with MG UK Technical. They then have to wait for instructions as to what to do.
At least the dealer is doing the decent thing in terms of alternate transport, and whilst i dont mean to be impolite about the MG3, i was always left with the impression, thatcwhilst its fantastic value for money, corners have been cut elsewhere.
If you can persevere, because MG have to eventually rectify the fault or come up with an alternative, as they have to honour the warranty. If after a further period of time, i would enquire whether you have legal cover,maybe through a credit card, or household insurance. If so, see if they will take the case up on your behalf. There must be some 'reasonable' time frame legally speaking, in which something solution has to be found.
Good luck, and i for one would be interested in the outcome.
BTW I paid £18,900 for my MG3 TROPHY (Batterseablue metalic), and in essence got £14,000 eighteen months later.

Has anyone here ever been offered a replacement , seems like most took trade for it . I suppose if you’d had this much trouble having another mg3 wouldn’t help in the long run

 

[bakerdave]

Does anyone have a clue as to how many MG3+ cars have been affected by this issue ( percentage wise) ? And how soon does this fault appear ?
My car was bought second hand @ 9 months and ~ 9000 miles ,having been used initially as a demonstrator and latterly by a salesman at the dealership. I had assumed that the niggles would have already been ironed out.