F1 2014 driver line-up: What's known...?

It is still far from clear how the F1 grid will look next season, but here's a look at what is known, with Sebastian Vettel already confirmed at Red Bull, while McLaren and Mercedes look set to field an unchanged line-up going on what has been previously announced by both teams.

Currently the burning question is who will take Mark Webber's place at Red Bull?

Kimi Raikkonen and Daniel Ricciardo are the favourites, although Fernando Alonso has also been mentioned.

Kimi has been linked to a return to the Scuderia too, while Paul di Resta and Nico Hulkenberg have both been muted as possible replacements for Raikkonen at Lotus, should the Finn opt to move on...

Meanwhile, Pastor Maldonado is expected to stay with Williams and Felipe Massa's future at Ferrari is as uncertain as ever...

The F1 silly season is in full swing!

Confirmed 2014 F1 drivers:

Sebastian VettelGermanyRed Bull-Renault
(Confirmed until the end of 2015)

Fernando AlonsoSpainFerrari-Ferrari
(Confirmed for 2013, with options for 2014 and beyond?)

Jenson ButtonBritainMcLaren-Mercedes
(Signed 'multi-year deal' in October 2011)Sergio PerezMexicoMcLaren-Mercedes
(Signed 'multi-year deal' in October 2012)

Lewis HamiltonBritainMercedes-Mercedes
(Deal expires at end of 2015)Nico RosbergGermanyMercedes-Mercedes
(Signed 'multi-year deal' in November 2011)

Still to be confirmed:

Felipe MassaBrazilFerrari-Ferrari
(Deal expires at end of 2013)

Kimi RaikkonenFinlandLotus-Renault
(Signed two year deal in November 2011, second year was an option)Romain GrosjeanFrenchLotus-Renault
(Signed deal for 2013, contract length not announced)

Nico HulkenbergGermanySauber-Ferrari
(Signed deal for 2013, contract length not announced)Esteban GutierrezMexicoSauber-Ferrari
(Signed deal for 2013, contract length not announced)

Paul di RestaBritainForce India-Mercedes
(Signed deal for 2013, believed to be a one-year contract)Adrian SutilGermany Force India-Mercedes
(Signed deal for 2013, believed to be a one-year contract)

Pastor MaldonadoVenezuelaWilliams-Renault
(Signed deal for 2013, contract length not announced)Valtteri Bottas FinlandWilliams-Renault
(Signed deal for 2013, contract length not announced)

Daniel RicciardoAustraliaToro Rosso-Ferrari
(Signed deal for 2013, contract length not announced)Jean-Eric VergneFranceToro Rosso-Ferrari
(Signed deal for 2013, contract length not announced)

Charles PicFranceCaterham-Renault
(Signed 'multi-year deal' in November 2012)Giedo van der Garde Netherlands Caterham-Renault
(Signed deal for 2013, contract length not announced)

Max ChiltonBritainMarussia-Cosworth
(Signed deal for 2013, contract length not announced)Jules BianchiFranceMarussia-Cosworth
(Signed deal for 2013, contract length not announced)

Retirement

Mark WebberAustraliaRed Bull-Renault
(Heading to sportscars with Porsche).