From the 2009 season, the FIA is making public the weights of the cars, with their fuel load included, following Saturday's qualifying session.

Below is the weight of each car following qualifying for the British Grand Prix, sorted by qualifying position.
Pos  Driver                Weight (kg)
 1.  Sebastian Vettel       666.5
 2.  Rubens Barrichello     657.5
 3.  Mark Webber            659.5
 4.  Jarno Trulli           658.0
 5.  Kazuki Nakajima        652.5
 6.  Jenson Button          657.5
 7.  Nico Rosberg           661.5
 8.  Timo Glock             660.0
 9.  Kimi Raikkonen         654.0
10.  Fernando Alonso        654.0
11.  Felipe Massa           675.0 *
12.  Robert Kubica          689.5 *
13.  Heikki Kovalainen      695.5 *
14.  Nelson Piquet          682.5 *
15.  Nick Heidfeld          665.5 *
16.  Giancarlo Fisichella   668.0 *
17.  Sebastien Bourdais     687.5 *
18.  Adrian Sutil           692.0 *
19.  Lewis Hamilton         666.0 *
20.  Sebastien Buemi        672.5 *

* declared weight