Williams chairman Adam Parr says he is both surprised and frustrated by a difficult start to the 2011 F1 season for the Grove-based outfit.

The team has yet to complete a race distance after both Rubens Barrichello and Pastor Maldonado retired for the second successive race in Malaysia - with Maldonado having been the first man out for the second successive event.

The disappointing start to the years comes after the FW33 was being tipped as a dark horse during pre-season testing and Parr admitted he was shocked at the troubles the team has faced in Australia and Malaysia.

"Like everyone at Williams, I am both surprised and frustrated with our start," he said. "In spite of having an ambitious concept for the FW33, the benefit of continuity with our engine, and moving into our second season with Rubens, we have come up short. It is particularly bad in view of our relative strength in pre-season testing and the exceptional amount of work that everyone across Williams has put into this car."

Parr added that the team would be reviewing every aspect of its programme in order to get back on track and he insisted that the team was looking towards 2012 and not just the short term.

"First, we have to understand where we are strong and where we are weak. We have had some notable areas of success with the FW33 and we can build on these. We also have some promising improvements coming through for Shanghai and Istanbul and we need to see how these perform. We also need to get on top of the reliability issues because these not only affect immediate performance, they also absorb resources that should be focused on improvement.

"We will move forward, but that does not alter the fact that we have started too far behind.Therefore, we will be looking not only at how to address the short-term issues - we will be working together to strengthen the team for 2012 and beyond. Every aspect will be reviewed, nothing is sacred, but we will do this methodically and not in a reactive way."