McLaren will unveil their latest F1 car on Sunday when the new Honda-powered MP4-31 is launched online.
Ahead of what is always one of the most eagerly-awaited unveilings of pre-season, take a look back at the last 10 cars to have rolled off the production line at Woking...
2006: MP4-21
Drivers: Kimi Raikkonen and Juan-Pablo Montoya/Pedro de la Rosa
Engine: Mercedes
Constructors' Championship: 3rd (110 points)
Best result: 2nd (x4)
2007: MP4-22
Drivers: Fernando Alonso and Lewis Hamilton
Engine: Mercedes
Constructors' Championship: DSQ (0 points)
Best result: 1st (x8)
2008: MP4-23
Drivers: Lewis Hamilton and Heikki Kovalainen
Engine: Mercedes
Constructors' Championship: 2nd (151 points)
Best result: 1st (x6)
2009: MP4-24
Drivers: Lewis Hamilton and Heikki Kovalainen
Engine: Mercedes
Constructors' Championship: 3rd (71 points)
Best result: 1st (x2)
2010: MP4-25
Drivers: Jenson Button and Lewis Hamilton
Engine: Mercedes
Constructors' Championship: 2nd (454 points)
Best result: 1st (x5)
2011: MP4-26
Drivers: Lewis Hamilton and Jenson Button
Engine: Mercedes
Constructors' Championship: 2nd (497 points)
Best result: 1st (x6)
2012: MP4-27
Drivers: Jenson Button and Lewis Hamilton
Engine: Mercedes
Constructors' Championship: 3rd (378 points)
Best result: 1st (x7)
2013: MP4-28
Drivers: Jenson Button and Sergio Perez
Engine: Mercedes
Constructors' Championship: 5th (122 points)
Best result: 4th
2014: MP4-29
Drivers: Jenson Button and Kevin Magnussen
Engine: Mercedes
Constructors' Championship: 5th (181 points)
Best result: 2nd
2015: MP4-30
Drivers: Fernando Alonso and Jenson Button
Engine: Honda
Constructors' Championship: 9th (27 points)
Best result: 5th
The first Barcelona test starts on Monday February 22 and the Sky Sports F1 Digital team will be providing live commentary from dawn until dusk on all four days while Sky Sports News HQ will also deliver live updates from trackside.