Repair / Rejecting car options - with finance on car.

[Setmefree3]

https://www.which.co.uk/consumer-rig...-are-my-rights

[des8]

Probably best solution is to contact Finance Company and tell them you are minded to reject the vehicle.
However also tell them you are prepared to allow them one attempt to bring the vehicle to a satisfactory condition, but as per CRA2015 this has to be done expeditiously, and at no cost to yourself.
The vehicle is available for collection from XYZ, or you would be prepared to deliver and collect if they agree to reimburse your losses.
Then confirm in writing (email acceptable) whatever you agree with them .