The 16 years old daughter of actor Paul Walker filed a wrongful-death suit Monday against German car manufacturer company Porsche AG, alleging defects in the car that caused the death of her father. According to the complaint, Porsche AG knew the Carrera GT had a history of instability but failed to add a control system to address that issue. However, the compensation sum demanded by Meadow Walker is not revealed. The suit also names Porsche Cars North America and Beverly Hills Porsche as defendants. Authorities believe the car was traveling at more than 151 km/h before it slammed into trees. Investigators found unsafe speed and not mechanical problems to be responsible for the crash. Investigators reached those conclusions after consulting with Porsche technicians.Meadow is Walker's only child and the sole heir to his estate, estimated to be worth about million at the time of his death.