With Formula One returning in just a few hours away, here's a team-by-team guide to the 2008 season: 

Team: FERRARI
Drivers: Kimi Raikkonen (Finland), Felipe Massa (Brazil)

Impressive in pre-season testing, particularly in long runs, and looking very much the team to beat. Reliability is still a concern. Raikkonen is the early favourite as champion but Massa, who starts on equal terms, will be a big rival and will undoubtedly win races.

Team: BMW SAUBER
Drivers: Nick Heidfeld (Germany), Robert Kubica (Poland)

BMW have targeted a first grand prix win as their major ambition for the season, and may get it later in the year. A title challenge looks to be beyond them still. Testing times have been mixed, with the new F1.08 car slower than expected at first but steadily improving since. Double world champion Fernando Alonso singled them out as a team to watch.

Team: RENAULT
Drivers: Fernando Alonso (Spain), Nelson Piquet (Brazil)

Alonso's return is a boost for the former champions after a disappointing and winless 2007 season, but he may be frustrated in the first few races with a car that has plenty of ground to make up. The Spaniard will be very much the main man, with 22-year-old Piquet in support. Piquet follows his triple-champion and namesake father into the sport.

Team: WILLIAMS
Drivers:Nico Rosberg (Germany), Kazuki Nakajima (Japan)

The fact that McLaren wanted Rosberg as a replacement for Alonso speaks volumes about his talent. Williams' success in retaining him shows they still mean business and the new car has been quick and reliable. Fourth place overall looks a realistic aim. Nakajima starts his first full season but has already shown that he has the speed.

Team: RED BULL
Drivers: David Coulthard (Britain), Mark Webber (Australia)

The oldest line-up on the starting grid may seem strange for a team that projects a youthful and irreverent image but Renault-powered Red Bull want results and see experience as the best way to get them. Reliability should be much-improved after a shocking 2007 and the Adrian Newey-designed car has shown a fair turn of speed. Can hope for the occasional podium and a shot at fourth place overall.

Team: TOYOTA
Drivers: Jarno Trulli (Italy), Timo Glock (Germany)

Regular under-achievers emerging from a highly disappointing 2007 with a new car that represents a radical break from the past. They should certainly do better than last year and could even challenge teams such as Renault, Williams and Red Bull. Trulli is notably quick over a single lap, so they should be able to qualify well. Rookie Glock is still finding his way.

Team: TORO ROSSO
Drivers: Sebastien Bourdais (France), Sebastian Vettel (Germany)

The two fresh driver talents could make this the most-improved team of the year. Bourdais is a four-times Champ Car champion but a Formula One rookie, Vettel is starting his first full season after already becoming a hot property on the basis of last year's results. The new Ferrari-powered car does not arrive until after the first few long-haul races.

Team: HONDA
Drivers: Jenson Button (Britain), Rubens Barrichello (Brazil)

Honda must do better than last year and that should not be difficult. But the car has still looked slow in testing and they may decide to cut their losses and focus on 2009 earlier than most. The arrival of Ross Brawn as team principal has galvanised the staff. Barrichello will set a record of 257 race starts later in the year but he may not have much else to celebrate.

Team: SUPER AGURI
Drivers: Takuma Sato (Japan), Anthony Davidson (Brtain)

Negotiations to secure the team's future were only resolved this month, and although Super Aguri will be glad that the acquisition by the Magna Group has gone ahead, they will be racing with a huge disadvantage after taking part in just one test since December. Expect them to be lapped and last.

Team: FORCE INDIA
Drivers: Giancarlo Fisichella (Italy), Adrian Sutil (Germany)

One point last year as Spyker but now much more serious challengers under new ownership. Indian billionaire Vijay Mallya has provided a far bigger budget and hired Fisichella from Renault. His experience will be invaluable. The new car looks far more competitive and could embarrass some of the bigger teams.

Team: MCLAREN
Drivers: Lewis Hamilton (Britain), Heikki Kovalainen (Finland)

Last in the pecking order after being stripped of all their constructors' points and fined $100 million for a spying controversy. McLaren are still in a class of their own with Ferrari and will be the Italians' biggest rivals. Hamilton looks a good bet for the title while Kovalainen will be pushing him hard to show his worth after his debut with Renault in 2007. The two drivers have started just 34 races between them.

You can get live lap-by-lap coverage of all this season's F1 Grand Prix in our live F1 centre.