Marussia has ruled out a problem with its car as the cause of Maria de Villota's recent testing accident, after concluding its own investigation into what happened.

De Villota (LEFT) lost her right eye and suffered facial and head injuries in the incident at Britain's Duxford airfield, when she crashed into the back of a truck at slow speed as she returned to the pit area after conducting straightline aerodynamic work.

Alongside an investigation being conducted by the Health and Safety Executive (HSE) and another commissioned by an independent forensic body, Marussia also conducted its own in-depth look at what happened. Although the specifics of what caused the accident have not been confirmed yet, Marussia issued a statement on Monday revealing that the crash was not caused by a failure on the car.

"We are satisfied that the findings of our internal investigation exclude the car as a factor in the accident," team principal John Booth said. "We have shared and discussed our findings with the HSE for their consideration as part of their ongoing investigation.

"This has been a necessarily thorough process in order to understand the cause of the accident. We have now concluded our investigatory work and can again focus on the priority, which continues to be Maria's well being. In that regard, we continue to support Maria and the de Villota family in any way we can."

De Villota is conscious in a hospital and able to talk to her family as she continues her recovery.