Motor trader has sold me a mapped car - what are my rights?

I part-exchanged my car two months ago for a 2019 BMW M140i from a trader. Within weeks of owning the car, I discovered it had been engine mapped. The trader acknowledged my complaint but said he needed...

Is it worth having my Volvo Polestar optimised?

I have a Volvo V60 T4 and I am considering having it Polestar optimised. It’s quite expensive for what appears simply to be a remapping of the ECU i.e. half an hour with a laptop. I don’t know anyone who...

Do I have to tell my insurer if I remap my car's engine?

If I have my engine remapped, do I have to inform my insurance company? Will it affect my insurance?