[Vince]

You could shorten it a bit, removing the need to use IsPlayerInAnyVehicle. But otherwise it looks okay.

pawn Код:

if(RepairVehicle(GetPlayerVehicleID(playerid)))
{
    PlayerPlaySound(playerid, 1133, 0.0, 0.0, 0.0);
    SendClientMessage(playerid, 0x33AA33AA, "[INFO]: Your vehicle has been repaired"); 
}
else
{
    SendClientMessage(playerid, 0xFF0000FF, "[ERROR: You're not in a vehicle]");
}