Subframe floor cracked NO goodwill warranty

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Boot floor has cracked in two places, BMW dealer has put in the warranty request and it has been denied. Car over the 10 year goodwill period. Registered Sept 03.

Spoke to customer services and escalated the claim and explained my case 'not fit for purpose' 'US civil case' 'Problem since new that they knew about since 2003' etc etc but got no where.

I have the contact for BMW UKs legal team and the managing director.

What to do next? Any ideas?

1. Suck it up, pay to have it fixed and move on
2. Get solicitor to write a letter to the legal team stating my case 'not fit for purpose case' and take the UK MD to small claims court?

I know two dealers well, one of which has done over 30 subframe floor repairs, another 10. Has there been or can we put together a private list of all cars that have had a repair done, the chassis number and mileage.

I presume there is a legal reason why BMW chose 10 years and I'm sure their legal team have got this covered.

It's rather frustrating having to pay the bill for BMWs design flaw that should have been rectified when they first discovered the problem in 2003.

Sadly many other people are now going to find themselves in this position in the future.