

The car was shaken down at Silverstone on 28 January 2011, and made its full on-track debut at the Circuit Ricardo Tormo in Valencia, Spain, on 1 February 2011 in an interim testing livery. It was driven by Brazilian veteran Rubens Barrichello and 2010 GP2 Series champion and rookie driver Pastor Maldonado. The Williams FW33 was a Formula One racing car developed by Williams F1 for the 2011 Formula One season. Seven-speed sequential semi-automatic gearbox with reverse gear electro-hydraulically actuated seamless-shift Same as front, except pullrod activated rear dampersĬosworth CA2011k 2.4 L (146 cu in) 90° V8, limited to 18,000 RPM with KERS naturally aspirated mid-mounted Carbon-fibre and honeycomb composite monocoqueĬarbon-fibre double wishbone arrangement, with composite toelink and pushrod-activated springs and anti-roll bar

Monaco saw an improvement in the team's fortunes as Barrichello finished 9th. This made it the worst start to a season in the history of the Williams team. In the next three races, both drivers finished, but failed to score any points. Both drivers retired from the first two races of the season.

During the course of the season, it became clear that the car was much less competitive than the Williams FW32 as the car tended to lack pace and struggled in races.
