sparkling debate about who is responsible for the accident
The Audi/VW group has waaaaay more money than the robot manufacturer. I bet I know who the deceased's family sues for compensation.
Erm... In countries with sane industrial relations laws the employer is directly responsible for ensuring that all the equipment provided for use is safe and the worker is trained on how to operate it. So yes, they will be the ones getting sued, however in this case, the family will only be entitled to sue if they can demonstrate the employer failed this "duty of care". If the employee forgot to set the safeties or ignored procedure, they dont have the right to sue. If VAG failed it's duty of care, the fines from the regulatory authority would dwarf the compensation claims anyway.
VAG will likely offer compensation to the employees family out of an obligation in either case (in Germany this is likely negotiated by their evil unions that dare to look after employees).