Mercedes . Engine: Mercedes . 44 Lewis Hamilton (GBR) Age: 30 . Grand Prix: 148 . Wins: 33 . 7 Nico Rosberg (Ger) Age: 29 . Grand Prix: 166 . Wins: 8 . Hamilton has got the confidence, but we do know that he can be fragile — his gaffe during qualifying for the British Grand Prix last year is a good example. Rosberg has a lot to prove, but he will undoubtedly learn from his mistakes. He will come back stronger. Nico Rosberg drives the new Mercedes car during testing at the Circuit de Catalunya in Spain on March 1 . Red Bull . Engine: Renault . 3 Daniel Ricciardo (Aus) Age: 25 . Grand Prix: 69 . Wins: 3 . 26 Daniil Kvyat (Rus) Age: 20 . Grand Prix: 19 . Wins: 0 . New Red Bull driver Daniil Kvyat takes the 2015 car round the track in Barcelona during a filming day . Williams . Engine: Mercedes . 19 Felipe Massa (Bra) Age: 33 . Grand Prix: 212 . Wins: 11 . 77 Valtteri Bottas . Age: 25 . Grand Prix: 38 . Wins: 0 . The flair and experience of Massa is balanced by the steely determination of Bottas, who I expect to lead the charge to Mercedes on a consistent basis. Massa is a great character and I hope he gets some good results, such as his pole position in Austria last year. Felipe Massa takes the WIlliams for a spin during testing in Barcelona at the end of February . Ferrari . Engine: Ferrari . 5 Sebastian Vettel (Ger) Age: 27 . Grand Prix: 139 . Wins: 39 . 7 Kimi Raikkonen (Fin) Age: 35 . Grand Prix: 213 . Wins: 20 . There is less pressure on Vettel because it is a fresh challenge. It is the first time he has flown the nest and I expect to see him develop. Kimi was fantastic at races in 2013 but at the same events last year he was nowhere. The car will be better and I hope it gives him what he needs. Sebastian Vettel has moved from Red Bull to Ferrari for the 2015 season . McLaren . Engine: Honda . 14 Fernando Alonso (Spa) Age: 33 . Grand Prix's 236 . Wins: 32 . 22 Jenson Button (GBR) Age: 35 . Grand Prix's 268 . Wins: 15 . All team bosses nominated Alonso as the driver they would want, but he clearly has problems. Keeping Jenson was right, too, but the car is not where it needs to be. They finished fifth in 2014 with the best engine but have changed to Honda, so my gut says they will not improve. Great Britain's Jenson Button drives the new Honda powered McLaren at testing this month . Force India . Engine: Mercedes . 27 Nico Hulkenberg (Ger) Age: 27 . Grand Prix: 77 . Wins: 0 . 11 Sergio Perez (Mex) Age: 25 . Grand Prix: 77 . Wins: 0 . Hulkenberg is one of the stars but he has not been in the environment to win races, and I don’t know if he’ll achieve that at Force India. Last year Perez outshone him. Hulkenberg needs to be dominant if he wants to join a big team like Perez did at McLaren. Force India's Sergio Perez puts the car through its paces at the Circuit de Catalunya . Toro Rosso . Engine: Renault . 55 Carlos Sainz Jnr (Spa) Age: 20 . Grand Prix: 0 . Wins: 0 . 33 Max Verstappen (Hol) Age: 17 . Grand Prix: 0 . Wins: 0 . It is the youngest driver pairing in F1 history, but I like it. With greater experience, Jnr is who you would expect to lead the team, but I think we are going to get a big surprise from Max. He hardly made a mistake in testing, doesn’t miss apexes or lock brakes and looks in control. Toro Rosso's 17-year-old rookie Max Verstappen tests the new car earlier this month . Lotus . Engine: Mercedes . 8 Romain Grosjean (Fra) Age: 28 . Grand Prix: 64 . Wins: 0 . 13 Pastor Maldonado (Ven) Age: 29 . Grand Prix: 77 . Wins: 1 . I’m a big Grosjean fan, but the car was not very good last year and he struggled. If the team can deliver on performance — they have changed from Renault to Mercedes engines — we will see him up there. Pastor can deliver but he also crashes. He must reduce those incidents. Pastor Maldonado tests the new Lotus car at the circuit on the outskirts of Barcelona . Sauber . Engine: Ferrari . 9 Marcus Ericsson (Swe) Age: 24 . Grand Prix: 16 . Wins: 0 . 12 Felipe Nasr (Bra) Age: 22 . Grand Prix: 0 . Wins: 0 . A new driver line-up, with Adrian Sutil and Esteban Gutierrez leaving. Marcus Ericsson failed to set the world alight at Caterham in 2014, while Brazilian rookie Felipe Nasr battled for last year’s GP2 championship. Each brings £12m in sponsorship to the cash-strapped outfit. Felipe Nasr, who will be making his Formula One debut, tests the new Sauber . Manor . Engine: Ferrari . - Will Stevens (GBR) Age: 23 . Grand Prix: 1 . Wins: 0 . Will Stevens has got his chance but the big story here is that the team are on the grid and that really makes me smile. I am very pleased for all the guys there because they are racers with real passion. Why not give Paul di Resta a chance alongside the former Caterham driver? He would be exactly the type of character that Manor needs. The F1 season kicks off with the Australian GP on Sunday, March 15. Watch highlights on BBC One at 13.15, listen live on Radio 5 live and follow all the action on the BBC Sport website.
The 2015 F1 season starts next Sunday with the Australian Grand Prix . Lewis Hamilton and Mercedes will be hoping they can retain their titles . Former driver Allan McNish gives his verdict on the teams and drivers .