public class MyScript : MonoBehaviour
{
public int moshnost = 100; // мощность
public int kolvoPeredach = 200; // кол-во передач
и т д.
}

public int power = 220;
public int peredacha = 5;

public int power = 0;
public int peredacha = 0;

public int power = 220;
public int peredacha = 5;

public void CarSpeed()
{
  int CarSpeed = 0;
if (peredacha == 1)
{
CarSpeed = power /3.4f;
}
if (peredacha == 2)
{
CarSpeed = power/3.0f;
}
}

[RequireComponent(typeof(Axles))]
public class Drivetrain : MonoBehaviour
{
    public enum Transmissions
    {
  RWD,
  FWD,
  AWD,
  XWD
    }

    [HideInInspector]
    public bool engineTorqueFromFile;

    [HideInInspector]
    public int torqueRPMValuesLen;

    [HideInInspector]
    public float[,] torqueRPMValues = new float[0, 0];

    [HideInInspector]
    public Clutch clutch;

    [HideInInspector]
    public CarController carController;

    private Setup setup;

    private Axles axles;

    [HideInInspector]
    public FuelTank[] fuelTanks;

    private Rigidbody body;

    private Transform myTransform;

    [HideInInspector]
    public Wheel[] poweredWheels;

    public float maxPower = 210f;

    public float maxPowerRPM = 5000f;

    public float maxTorque = 360f;

    public float maxTorqueRPM = 2500f;

    [HideInInspector]
    public float originalMaxPower = 210f;

    [HideInInspector]
    public float maxNetPower;