Hello, thanks for your question.
My name isXXXXX can assist you with this.
You say the throttle is erratic, to me, that sounds dangerous - would you agree?
Okay, it sounds to me like this is likely to be considered "unsatisfactory quality" and "not fit for purpose". I would imagine it would cause the MOT to fail, and thus her vehicle is likely to not be considered roadworthy. As such, if it is, then she would be entitled to reject the vehicle and demand her money back. Equally, she could demand a repair if the preferred.
I assume, obviously, that she was not told about these issues and my comments are on that basis.
I am a qualified solicitor, yes.
If the vehicle cost less than £10,000, then yes, I would say so.
Not really - just try and settle it before issuing proceedings as the court will expect you to do that.
Thank you! Have a good day.