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LONDON, Jan 18 - Williams will run its 2012 car at Formula 1's first pre-season test at the Jerez circuit on February 5 2013 with the new FW35 to be unveiled in Barcelona on February 19.
The former champions are the first team to state publicly that they will not have their 2013 car on track for the opening test.
Champions Red Bull, Ferrari, Mercedes and McLaren have all announced car launches before Jerez as have Sauber, Force India and Toro Rosso.
OLD CAR, NEW LIVERY
Lotus are also expected to test with the new car.
There are, however, minimal regulation changes from 2012 to 2013, with a radical overhaul scheduled for 2014 when a new power unit comes in. Williams will be testing 2013 development parts on its FW34 in Jerez.
The old car will run in the 2013 livery.
Williams finished last season eighth overall and have a changed driver line-up in 2013 with Valtteri Bottas replacing Bruno Senna alongside Pastor Maldonado.
They have also lost chief operations engineer Mark Gillan, an important figure in the team's marked improvement on the track last year, since the end of the 2012 season.
Williams took their first victory in eight years in 2012 with Maldonado winning at the same Barcelona track where the new car will be launched.
The former champions are the first team to state publicly that they will not have their 2013 car on track for the opening test.
Champions Red Bull, Ferrari, Mercedes and McLaren have all announced car launches before Jerez as have Sauber, Force India and Toro Rosso.
OLD CAR, NEW LIVERY
Lotus are also expected to test with the new car.
There are, however, minimal regulation changes from 2012 to 2013, with a radical overhaul scheduled for 2014 when a new power unit comes in. Williams will be testing 2013 development parts on its FW34 in Jerez.
The old car will run in the 2013 livery.
Williams finished last season eighth overall and have a changed driver line-up in 2013 with Valtteri Bottas replacing Bruno Senna alongside Pastor Maldonado.
They have also lost chief operations engineer Mark Gillan, an important figure in the team's marked improvement on the track last year, since the end of the 2012 season.
Williams took their first victory in eight years in 2012 with Maldonado winning at the same Barcelona track where the new car will be launched.