Drivers have six stats which impact their race performance. Each stat impacts a different part of the race. You can improve a driver's stats by upgrading them.
Impacts the amount of overtaking possibilities that a driver can see, and also their skill in being able to make an overtaking move stick.
Impacts the skill at which a driver can hold their position against overtakes.
Impact tyre wear rates. Smoother drivers make tyres last longer.
Impacts their general speed during the race. A higher stat means a faster pace
Impacts their starting position during the race. The driver with the highest qualifying number (including their starting tyre choice) will place first on the grid for the race.
Impacts how quickly a driver pulls away from their starting position at the beginning of the race.