[GeasyW]

pawn Код:

new Float:Milleage[MAX_VEHICLES];

pawn Код:

new Float:ST[4], vehicleid;

vehicleid = GetPlayerVehicleID(playerid);
    
    GetVehicleVelocity(vehicleid,ST[0],ST[1],ST[2]);
    ST[3] = floatsqroot(floatpower(floatabs(ST[0]), 2.0) + floatpower(floatabs(ST[1]), 2.0) + floatpower(floatabs(ST[2]), 2.0)) * 179.28625;

    Milleage[vehicleid] += ST[3]/2000;

In Kilometers
Hopefully I helped you.