Jenson Button says McLaren are still being hindered by a lack of battery deployment from their Honda power unit.
Carlos Sainz took satisfaction from winning his 2015 qualifying battle with Max Verstappen after making the top 10 in Abu Dhabi.
Lewis Hamilton still not happy with the balance of his Mercedes after being out-qualified by nearly four tenths by Nico Rosberg.
McLaren have admitted Fernando Alonso may take a sabbatical in 2016 - with the Spaniard failing to convincingly rule out the idea.
Nico Rosberg takes his sixth straight pole position at the Abu Dhabi GP ahead of Lewis Hamilton and Kimi Raikkonen.
Mercedes have asked FIA stewards in Abu Dhabi to clarify what they believe are a "number of ambiguities" regarding F1's rules.
Nico Rosberg continued his fine run of form as he topped final practice from Mercedes team-mate Lewis Hamilton in Abu Dhabi.
Christian Horner has warned Red Bull face 'a transitional year' in 2016 with their new power supply deal.
Will Stevens feels he has done enough this year to justify a seat on the grid in 2016 and says things are "moving in the right direction".
Ferrari are looking over their shoulders at the Abu Dhabi GP after rivals Red Bull and Force India outpaced them in practice.
Nico Rosberg feels his chances of victory in Abu Dhabi will be hampered by using an older engine than Lewis Hamilton.
1pm is the essential time of day this weekend for F1 fans as the 2015 season reaches its conclusion in Abu Dhabi.
Watch - well, listen - as Sebastian Vettel sings to his race engineer during practice for the Abu Dhabi GP.
Renault have confirmed that their takeover of Lotus still hasn't been completed - but expect to make an announcement next week.
Nico Rosberg was fastest in second practice for the Abu Dhabi GP from Lewis Hamilton but predicts a difficult weekend ahead.
Lewis Hamilton has said that boosting aerodynamic downforce to lower lap times in 2017 is the "worst idea" F1 can have.
Lewis Hamilton began the season-ending Abu Dhabi GP in perfect style by setting the pace from Nico Rosberg in Practice One.
Christian Horner says Red Bull have signed an engine deal for 2016 and will be on the grid "unless something untoward happens".
Nico Rosberg claims sixth consecutive pole position with stunning effort to beat Lewis Hamilton by almost four tenths
Williams have signed Canadian teenager Lance Stroll to their Young Driver Development Programme.