This year, the engines are limited to 3000cc with a maximum of 12 cylinders. They cannot use more than 5 valves per cylinder. The engines are mostly V10 configuration, putting out around 800 horsepower at up to 18,000 rpm. Total weight, including the driver, must not be less than 600 kgs. That's not a bad power to weight ratio.
Performance has a price, though.
Tyre pressures are crucial to the handling characteristics of the car. They are usually set somewhere around 22 psi at the front and 18 psi at the rear. A change in pressure of only 0.5 psi can create an oversteer or understeer problem. Understeer is where you hit the wall with the front of the car. Oversteer is where you hit the wall with the rear of the car.