How much less is a 2023 MG4 worth without valid MG warranty?

[LOZ]

Hi all,

I’m after a rough opinion on used values for a 2023 MG4.

I bought one in July 2025 for £14,495 from an Arnold Clark MG branch (with 18k miles), and it was sold to me as having full service history with a manufacturer warranty to 2030, all the sales paperwork also states the manufacturer warranty runs to 2030. On that basis, I had no reason to think otherwise. I’ve since found out the required service wasn’t done in the correct window (No March service in 2024 or 2025 recorded with MG only a July 2025 service with Arnold Clark), so MG say the manufacturer warranty may not actually have been valid when I bought it.

I’m currently taking this up with Arnold Clark to try to get them to put things right, ideally with some form of like for like warranty cover plus compensation for any loss in value/depreciation from the car not actually having valid warranty / proper service history at the time of sale.

What I’m trying to work out is what the car would realistically have been worth back then if it had been known that:

• it didn’t have the proper service history for warranty purposes
• the manufacturer warranty was invalid

As it was only about 2 years old, I’d expect that to have had a noticeable effect on value.

Does anyone have a view on:

• how much less it might have been worth?
• and the best way to evidence that properly?

Thanks

 

[Everest]

Oh no.. not another one

Worth taking a read of this thread - similar issue (though he rejected the MG (not MG4)) - IIRC the OP got estimates for the price of a 3rd party warranty, which is detailed somewhere in the thread. ETA: found it - see postings #33 & #34

T

Thread 'Warranty still valid? - Bought 2022 ZS EV with no proof of first service'

Jan 23, 2025

Hi everyone!

Coming here hoping to get some opinions from others based on their experience with using MG's warranty.

Earlier this week I bought a second-hand 2022 ZS EV from a mains MG dealer. When I first saw and test drove the car, the salesman guaranteed that the vehicle had full service history. I trusted this at face value and (perhaps foolishly) didn't ask to see proof...

The handover day comes and they didn't send any proof of servicing at all with the vehicle. I chase them up on this and suddenly they can only find proof of the latest service (done in Dec. 2024) but not from the...

• tiagoespinha
• 2022 zs ev first service mg zs ev valid warranty zs
• Replies: 83
• Forum: MG ZS EV Forum

 

[Tight Git]

I guess the simple answer is it is impossible to say but possibly not a lot.

When you read all of the exclusions the so called 7 year warranty doesn't actually cover very much. The only real way of knowing is at the point you make a claim and find out, which hopefully never happens.

What would you think is a reasonable outcome?

 

[Alb]

the so called 7 year warranty doesn't actually cover very much

On the contrary, it covers everything not listed as an exclusion and that certainly includes the most expensive parts of the car.