They include changes to the aerodynamics, the re-introduction of slick, untreaded tyres after 11 years with grooved rubber and the potential use of a kinetic energy recovery system (Kers), which stores energy that would have been dissipated during braking and reapplies it while the car is accelerating.

BBC: Red Bull expect wins from new car

Slick, untreaded tyres will also be reintroduced after 11 years on grooved tyres and teams have the option of employing a kinetic energy recovery system.

BBC: Alonso upbeat over Renault hopes

Slick, untreaded tyres will also be reintroduced after 11 years on grooved tyres, and teams have the option of employing a kinetic energy recovery system (Kers).

BBC: Hamilton eyeing second title bid

Red Bull will accept that they are likely to get passed by a McLaren or Kimi Raikkonen's Ferrari, who have the benefit of the kinetic energy recovery system (Kers) power boost on the run down to the first corner.

BBC: David Coulthard column