diff --git a/Auto.cs b/Auto.cs
index e181cc7..c489b5b 100644
--- a/Auto.cs
+++ b/Auto.cs
@@ -2,8 +2,10 @@ namespace concessionaria;
 
 class Auto {
 
-    readonly string targa, marca, modello;
-    readonly int cavalli;
+    string targa;
+    string marca;
+    string modello;
+    int cavalli;
     int prezzo;
     int bollo;
 
@@ -15,6 +17,22 @@ class Auto {
         this.prezzo = prezzo;
     }
 
+    public void SetTarga(string p_targa) {
+        this.targa = p_targa;
+    }
+
+    public void SetMarca(string p_marca) {
+        this.marca = p_marca;
+    }
+
+    public void SetModello(string p_modello) {
+        this.modello = p_modello;
+    }
+
+    public void SetCavalli(int p_cavalli) {
+        this.cavalli = p_cavalli;
+    }
+
     public void SetPrezzo(int p_prezzo) {
         this.prezzo = p_prezzo;
     }
diff --git a/Program.cs b/Program.cs
index 8efcce9..eb86e32 100644
--- a/Program.cs
+++ b/Program.cs
@@ -53,6 +53,13 @@ class Program {
                     break;
                 case 3:
                     Console.Clear();
+                    if (listaAuto == null) {
+                        Console.WriteLine("È necessario specificare almeno un'auto creando la concessionaria prima di applicare la promozione.");
+                    }
+                    else {
+                        Sconto(listaAuto);
+                        Console.WriteLine("Sconto applicato.");
+                    }
                     Pausa();
                     break;
                 default:
@@ -152,4 +159,18 @@ class Program {
 
         return ritorno;
     }
+
+    static void Sconto(Auto[] p_listaAuto) {
+        const int SCONTO_THRESHOLD = 15000;
+        const int SCONTO_1 = 5;
+        const int SCONTO_2 = 10;
+        for (int i = 0; i < p_listaAuto.Length; i++) {
+            if (p_listaAuto[i].GetPrezzo() <= SCONTO_THRESHOLD) {
+                p_listaAuto[i].SetPrezzo(p_listaAuto[i].GetPrezzo() - (p_listaAuto[i].GetPrezzo() * SCONTO_1) / 100);
+            }
+            else {
+                p_listaAuto[i].SetPrezzo(p_listaAuto[i].GetPrezzo() - (p_listaAuto[i].GetPrezzo() * SCONTO_2) / 100);
+            }
+        }
+    }
 }
\ No newline at end of file
diff --git a/bin/Debug/net9.0/concessionaria.dll b/bin/Debug/net9.0/concessionaria.dll
index e7d6635..8d0e000 100644
Binary files a/bin/Debug/net9.0/concessionaria.dll and b/bin/Debug/net9.0/concessionaria.dll differ
diff --git a/bin/Debug/net9.0/concessionaria.pdb b/bin/Debug/net9.0/concessionaria.pdb
index aeb28cd..f8da5a2 100644
Binary files a/bin/Debug/net9.0/concessionaria.pdb and b/bin/Debug/net9.0/concessionaria.pdb differ
diff --git a/obj/Debug/net9.0/concessionaria.AssemblyInfo.cs b/obj/Debug/net9.0/concessionaria.AssemblyInfo.cs
index a70793b..5e84094 100644
--- a/obj/Debug/net9.0/concessionaria.AssemblyInfo.cs
+++ b/obj/Debug/net9.0/concessionaria.AssemblyInfo.cs
@@ -13,7 +13,7 @@ using System.Reflection;
 [assembly: System.Reflection.AssemblyCompanyAttribute("concessionaria")]
 [assembly: System.Reflection.AssemblyConfigurationAttribute("Debug")]
 [assembly: System.Reflection.AssemblyFileVersionAttribute("1.0.0.0")]
-[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0+3be2a5ff1b0c90073bf2a879df199c1a91113bc8")]
+[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0+f214c6dc1f4b0800b84245d569b2ab8ec81ee74b")]
 [assembly: System.Reflection.AssemblyProductAttribute("concessionaria")]
 [assembly: System.Reflection.AssemblyTitleAttribute("concessionaria")]
 [assembly: System.Reflection.AssemblyVersionAttribute("1.0.0.0")]
diff --git a/obj/Debug/net9.0/concessionaria.AssemblyInfoInputs.cache b/obj/Debug/net9.0/concessionaria.AssemblyInfoInputs.cache
index 569a51d..9da0053 100644
--- a/obj/Debug/net9.0/concessionaria.AssemblyInfoInputs.cache
+++ b/obj/Debug/net9.0/concessionaria.AssemblyInfoInputs.cache
@@ -1 +1 @@
-ebf918c95e02f2efc89ef9578a87145ea757be1b58c75214b3a162b09d795f76
+174e68ef8687f1bb07df8ef65a9e0ee333cf2c49be6ea372ffa5c68890e7556a
diff --git a/obj/Debug/net9.0/concessionaria.dll b/obj/Debug/net9.0/concessionaria.dll
index e7d6635..8d0e000 100644
Binary files a/obj/Debug/net9.0/concessionaria.dll and b/obj/Debug/net9.0/concessionaria.dll differ
diff --git a/obj/Debug/net9.0/concessionaria.pdb b/obj/Debug/net9.0/concessionaria.pdb
index aeb28cd..f8da5a2 100644
Binary files a/obj/Debug/net9.0/concessionaria.pdb and b/obj/Debug/net9.0/concessionaria.pdb differ
diff --git a/obj/Debug/net9.0/ref/concessionaria.dll b/obj/Debug/net9.0/ref/concessionaria.dll
index f27647b..628e08c 100644
Binary files a/obj/Debug/net9.0/ref/concessionaria.dll and b/obj/Debug/net9.0/ref/concessionaria.dll differ
diff --git a/obj/Debug/net9.0/refint/concessionaria.dll b/obj/Debug/net9.0/refint/concessionaria.dll
index f27647b..628e08c 100644
Binary files a/obj/Debug/net9.0/refint/concessionaria.dll and b/obj/Debug/net9.0/refint/concessionaria.dll differ