Used cars and CRA

[Shoegal]

Hello everyone,
Please help! I purchased a car on 26/3/22 from 2nd hand car dealership. On 9/9/22 it came spluttering to a halt. I took it to a VW garage and paid for a report that said excessive engine damage. I immediately emailed the dealership I purchased from (for 8K) and they didn't want to know. They said there was no proof that the fault existed at point of sale. I went back and forth several times, asking to work with them to find a resolution, or I would have to rely on CRA 2015 and possibly pursue legal action. Their response was to say "we will cooperative with your legal team" I have since sent an LBA which has been completely ignored. I called a lawyer who said that the CRA is open to interpretation when it comes to cars and I would need to prove fault at time of sale in court.
has anyone had an experience of taking a

[des8]

A few questions first
1) what car? what age & mileage when purchased ? what mileage now?
2) did the report say what caused the damage?
3)how did you pay for the vehicle? i.e. cash/bank transfer or credit card or finance?

as the car proved unsatisfactory within 6 months of purchase it is for the dealer to prove the car was satisfactory when sold as CRA 2015 deems the fault was present at time of delivery (sec19 (14)