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Career Mode
You compete in either three, five, or seven seasons, that is your choice.
The longer the season, the harder it will be. So, if you do the full, longest Career mode of seven seasons, you will start off with the slower cars such as Virgin and Hispania. This is according to change, Codemasters will use the latest version of the car closest to release.
You choose all of your settings and can change them throughout.
You play a rookie driver. Your driver will replace the worst driver, in terms of stats, on a team, and that driver will either dissapear or swap for another driver who will dissapear.
The tagline of the Career mode is Be the Driver, Live the Life.
You have limited movement around your paddock area in order to ensure game navigation is quick.
In the garage you will be able to adjust car setup, strategy and more, and you will be able to sit in the car in the garage and watch the screens. Around the paddock you will be interviewed by a character using David Crofts voice and have a variety of answers to choose for his questions. Likewise with Press Conferences (Holly Samos's voice is used during the press conferences). Be sure to choose your answers wisely because this affects you career. The questions you get asked won't be random, they will be about the race you have just participated in, so if you have a bad crash, that will be the main talking point. You get a variety of different answers to choose from. Your responses can have an affect on some AI drivers accordingly. You can also have arguments with your team.
Limited amount of tyres each whole GP event, so all sessions.
Sessions are skippable.
8 engines a year.
Race Engineer chooses an engine each session though you can override. You cannot swap engine for every session though.
The better you have done, the more media interest you get.
Whoever is the best on your team will get new parts for the car first.
Your and/or your team mate's car can be upgraded throughout the season with new parts. Team leader gets parts first.
You have a female agent.
Your Race Engineer is always the same person with the same voice, sounds apparently like Rob Smedley. This person updates you with all the latest news.
Drivers don't change teams due to the license.
There are different champions, not the same person and team all of the time.
The number on cars cannot be changed due to the license.
You will penalised for using flashback, for example less XP.
The above means that you will earn XP for upgrades during the season.
There is no pre season testing.
You can choose from a limited amount of nicknames for your character.
There is a rivalry system which also earns you extra XP if you beat a rival. You have a constant rivalry with your team mate.
Upgrades aren't visual but affect performance and are physical.
You can turn on/off the flag system.

GP Mode (Single Race, Champ Season, Custom Season)
You can only use licensed drivers in these modes.
You choose absolutely everything, from race distance to track to driver.
Some settings can be changed in this mode.
Limited amount of tyres each whole GP event, so all sessions.
Sessions are skippable.
You choose an engine each session.
In Championship Season you have a limit of 8 engines for the whole season.
You can turn on/off the flag system.

Multiplayer (LAN, Online)
You can only use licensed drivers in this mode.
There is no Split Screen, but there is a party play time trial mode. Split Screen is on their wishlist for their future games.
LAN play is present.
There is an online mode.
Private matches are present.
ALL MP modes are 12 players max (this is 99% since 7th April 2010.)
In the Custom Grand Prix mode you can choose some settings, including whether or not you want an equal grid or a realistic grid of cars.
You can turn on/off the flag system.
Modes include:
Pole Position- a Q3 session where the player with the fastest time wins.
Sprint- a short 3 lap race with simulation options turned down to minimum, starting grid is decided randomly, the winner is the first player to cross the line.
Endurance- a 7 lap race with tyre wear and track evolution simulation turned on, at least one pit stop, starting grid is decided randomly, the winner is the first player to cross the line.
Grand Prix- a 7 lap race with tyre wear and track evolution simulation turned on, at least one pit stop, the starting grid is decided through a 10 minute qualification session, the winner is the first player to cross the line.
Custom Grand Prix- this is the mode where the host can choose some options, this can be private or public.
Like Career Mode, there is an XP system, probably used to rank up. Probably no car upgrades can be made, but this is unconfirmed.

For all modes, there are no mid-race saves.
Autosaved between sessions (e.g P1, Save, P2)