To be honest, this should be straightforward.
They've taken the car back, and you've asked to reject it right? so they shouldn't be touching it at all, (it remains your property until you get your money back) presumably you told them not to fix it. (This is important, because if you've asked them to fix it and they do, you've lost your right to reject, unless it breaks again.)
Ergo: If they've taken the car away, and you want to reject - don't engage in any negotiations over whether to fix it or not. If they're not giving you your money back, and have said their legal team is going to contact you, then as per @dLockers suggestion - you should immediatley notify the credit card company, and ask to do a section 75 chargeback on whatever you paid.
Also, don't be a pushover! You might feel like resolving it amicably, but to the dealer that most likely means he's still making profit and not having to deal with it's issues, and you're potentially stuck with a broken pile of expensive nuts and bolts!
If he sold you that car for £5k, he probably got it for like £2-3k via a part-ex or something, the dealer is only going to do whatever's best for him - don't cave in for the sake of being polite, or "not wanting to cause trouble"
Remember if the boot was on the other foot here, and you'd sold that car to the dealer with all the issues - I bet he'd have been livid and be demading his money back asap.
I think he's trying to screw you here, if I'm honest.
I don't think changing the battery is a big deal, it's a consumable item.
They’ve messaged me this morning asking for a convenient time where they can collect their loan car, and drop “my” BMW off, as they “need the loan car back”.
Hopefully a last-ditch effort on their part to sway me to keep it. I’ve replied saying “no need, as per our ongoing conversations, I’m rejecting the vehicle”.
They’ve not even told me what the issues are, or if they’ve fixed them (even then, I’ve asked that they don’t fix them as I don’t want it back).
Translation: they've played about with the X5 and realised it's going to cost to fix everything and want to bully you into keeping it.
What a shambles stand your ground with these cowboys
Translation: they've played about with the X5 and realised it's going to cost to fix everything and want to bully you into keeping it.
Don't give them the hire car back. Wait for their "legal proceedings" to get it back, then they will realize it's going to be easier to refund you and get their 15k hire car back. (that amount was what I recall you saying it was worth).
Also block the hire car in as they will just turn up with a spare key.

100%, they've likely scanned it and also found the throttle valve fault the OP referred too earlier.
@wingman I really really recommend you get some professional advice here, the garage are clearly 1: In breach of contract, and 2: are not going to allow you to just reject the vehicle without a fight.
And again - get on the phone to the credit card company and section 75 it, they're not going to be so keen to give you the car back, if the CC company have clawed back any funds.
If I were you, that vehicle wouldn't be coming anywhere near my driveway, I'd give their hire car back if they asked for it (you technically have to, as it's their property) - but I wouldn't be accepting it back, not under any circumstances whatsoever.
@jaybee is probably correct, they'll have worked out just how much the repairs are gonna be and they want shot
In my eyes the "owner not being in" has nothing to do with it tbh, its a legal right not a management discretion
As above, get something parked in front of the loaner they've given you and ensure that you have in writing to them that you are rejecting the vehicle and there is no reason to drop it back off with you.
I'd simply state that once the rejection has been completed and the refund issued then they can collect the loaner
If they're still messing about then S75 via CC, MCOL shouldnt even come into it.
You've got your consumer rights and the additional protection from S75, no need at all to incur any costs.
The CC co will likely ask for proof of attempts and getting it sorted via the Seller give them that and let them deal with it.
Not sure a successful section 75 claim necessarily means the credit card company recovered the money from the seller.we had a guy install some rather expensive shutters to one window, proper mangled them, refused to repair then disappeared.
he knows where I live, he has my number, he has my email, id like to think he's a good few k outta pocket for acting like a ****
s75 to the rescue!
I'm sorry but them coming round randomly with a spare key and nicking the loaner isn't really amicable, so I really don't see the harm in having a friend or family member block it. in.
the mcol thing shouldn't even be a consideration, you legally have s75 protections, this is precisely what it's for.
stop trying to play friends with everyone tell them exactly what you want and give them a 72 hour time frame.
explain they if theyve not confirmed within this time frame that you will be contacting your card issuer.
we had a guy install some rather expensive shutters to one window, proper mangled them, refused to repair then disappeared.
he knows where I live, he has my number, he has my email, id like to think he's a good few k outta pocket for acting like a ****
s75 to the rescue!
and please before buying any more cars, get a 2nd opinion aye
What's the update @wingman they must have been round by now.
He's still fighting them off with a pointy stick
It sounds dodgier and dodgier. I hope at some point when this is through you name them. At no point would I be taking the car back and certainly not in exchange for the loan car with no explanation and no fix. I’d already have been in contact with the CC company. It’s actually really easy and they’ll talk you through the process, I’ve set one up before just in case I didn’t get sense from the company, which I eventually did and just cancelled the claim.
So after rushing home to make sure we were in, we received a text around 4:30pm to say "sorry wingman, can't make it today, will text tomorrow" - I replied asking where we were at with the refund, he responded "that's with the other guy"
Not sure a successful section 75 claim necessarily means the credit card company recovered the money from the seller.

It's likely - it depends on the merchant but how it typically works is the chargeback amount is initially debited from the merchant's payout balance and then recovered by the same DD mandate used to payout funds from the MID, or left to be paid off by future sales. The merchant can then challenge it but has to provide evidence to the contrary such as a signed document showing the customer agreed to purchase and whatever T&Cs applied, or that goods were successfully delivered or whatever.Not sure a successful section 75 claim necessarily means the credit card company recovered the money from the seller.
Interesting, so section 75 claims do usually result in a charge back to the merchant?It's likely - it depends on the merchant but how it typically works is the chargeback amount is initially debited from the merchant's payout balance and then recovered by the same DD mandate used to payout funds from the MID, or left to be paid off by future sales. The merchant can then challenge it but has to provide evidence to the contrary such as a signed document showing the customer agreed to purchase and whatever T&Cs applied, or that goods were successfully delivered or whatever.
It's rare for a section 75 claimant to receive the funds back and then for a merchant claim to be successful later. Some providers offer additional insurance on top of this for merchants to help defend against chargebacks.
I suspect they'd attempt to recover it all from the merchant to start with regardless, but may end up coming from the card issuer in the cases where that isn't successful (e.g. if the merchant decides to close the MID with a large negative payout balance pending, cancels their DDs, etc).Interesting, so section 75 claims do usually result in a charge back to the merchant?
What about claims where only part of the payment was made by credit card?