Sergio Perez has been on a crash diet after Force India asked him to shed some kilos to compensate for an overweight car.
Fernando Alonso, a double world champion with Renault, joined McLaren from Ferrari at the end of 2014 and has been disappointed by their lack of success.
Daniel Ricciardo will again carry his nation's hopes of a first home winner at the season-opening Grand Prix at Albert Park.
Lewis Hamilton was asked for his wish-lists for the championship and he had little hesitation championing a more inclusive track-side environment.
Daniel Ricciardo is confident his Red Bull is faster than the car he drove to third place in the Formula One drivers' championship last season.
Formula One teams have until the end of April to agree 2017 rule changes by majority vote
This year, Lewis Hamilton will be face renewed competition from Ferrari and Red Bull, who are expected to close the gap on dominant Mercedes.
The wider new machines with broader tyres make much greater physical demands on the drivers.
With Nico Rosberg gone, a key factor this season will be how three-time champion Lewis Hamilton gets on with his new teammate.
Max Verstappen has already made Formula One history as the youngest to win a race and the youngest to qualify on the front row of the grid.
Everybody knew Ashwin Sundar was a talented driver, even before his first national championship win.
It was the public who alerted the police and the fire control room about the accident.
Ashwin Sundar and his wife Nivedhitha were charred to death after their car lost control and burst into flames.
John Surtees, who won the 1964 Formula One championship to become the only man to win world titles on two and four wheels, died.
John Surtees, the only man to win world titles on both two and four wheels, won one F1 title in 1964 and four 500cc motorcycle titles.
McLaren, a former Formula One heavyweight fallen on hard times, has been plagued by repeated problems with its Honda engine during the tests.
Sebastian Vettel, however, said he has learned from Mercedes' three-year dominance that the defending champions are likely holding something back.
Sebastian Vettel pushed his Ferrari to a lap of 1 minute, 19.024 seconds which was faster than that clocked by Mercedes driver, Valtteri Bottas.
Valtteri Bottas set the fastest time so far in Formula One's preseason testing, with Williams rival Felipe Massa close behind.
FIA's Auto magazine, Todt said the aim was to complete a pyramid structure leading from karting through Formula Four, Three and Two to F1.
Felipe Massa's eye-catching tally was matched only by Sebastian Vettel and Daniel Ricciardo.
Felipe Massa drove 67 laps in Tuesday's morning session, second-most to Ferrari driver Sebastian Vettel, who had 82 laps
Because if some extra soreness is the price for increased speed, then Hamilton and other drivers said they are more than happy to pay it.
Powerboat Grand Prix makes no provision for individual winners, rather rewards the team with the highest aggregate points.
Indian Express dissects the changes being made to put it back in the fastlane.
Ferrari and Mercedes showed better pace and reliability from the start, indicating that they will likely be a step ahead at Australian Grand Prix.
While rally cars frequently touch the 200 kmph mark, Powerboats average a rough speed of just under 100 kmph, due to the course.
Valtteri Bottas set the fastest time since layout changes were made at the Circuit Barcelona-Catalunya a decade ago.
The first Russian Grand Prix was held in Sochi in 2014 and the previous deal was set to run out in 2021.
Ferrari performance in the second preseason test event shows that the competitive edge is returning to F1.
Opponents Red Bull and McLaren, who had a troubled debut day, were still not firing on all cylinders.
While Lewis Hamliton aimed for speed, new teammate Valtteri Bottas went for distance as they shared time behind the wheel of the revamped Silver Arrow
Valtteri Bottas' teammate and three-time former champion Lewis Hamilton will take over driving for the Silver Arrows during Monday's afternoon session
The bigger and quicker cars are also likely to be harder to drive, putting more emphasis on the drivers' skills and physical conditioning.
The new car has a lengthened nose and an arrow-shaped wing as a consequence of the radical overhaul of the sport's technical rulebook.
Valtteri Bottas said that the car was the best car he had ever driven.