diff --git a/modules/openapi-generator/src/main/resources/rust/model.mustache b/modules/openapi-generator/src/main/resources/rust/model.mustache
index 79d3cda1c2b..7367124d7c9 100644
--- a/modules/openapi-generator/src/main/resources/rust/model.mustache
+++ b/modules/openapi-generator/src/main/resources/rust/model.mustache
@@ -27,15 +27,15 @@ pub enum {{{classname}}} {
 {{/enumVars}}{{/allowableValues}}
 }
 
-impl ToString for {{{classname}}} {
-    fn to_string(&self) -> String {
-        match self {
+impl std::fmt::Display for {{{classname}}} {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}", match self {
             {{#allowableValues}}
             {{#enumVars}}
-            Self::{{{name}}} => String::from("{{{value}}}"),
+            Self::{{{name}}} => "{{{value}}}",
             {{/enumVars}}
             {{/allowableValues}}
-        }
+        })
     }
 }
 {{/isInteger}}
diff --git a/samples/client/petstore/rust/hyper/petstore/src/models/numeric_enum_testing.rs b/samples/client/petstore/rust/hyper/petstore/src/models/numeric_enum_testing.rs
index 9b8f0cb0465..e3681aa6177 100644
--- a/samples/client/petstore/rust/hyper/petstore/src/models/numeric_enum_testing.rs
+++ b/samples/client/petstore/rust/hyper/petstore/src/models/numeric_enum_testing.rs
@@ -24,14 +24,14 @@ pub enum NumericEnumTesting {
 
 }
 
-impl ToString for NumericEnumTesting {
-    fn to_string(&self) -> String {
-        match self {
-            Self::Variant0 => String::from("0"),
-            Self::Variant1 => String::from("1"),
-            Self::Variant2 => String::from("2"),
-            Self::Variant3 => String::from("3"),
-        }
+impl std::fmt::Display for NumericEnumTesting {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}", match self {
+            Self::Variant0 => "0",
+            Self::Variant1 => "1",
+            Self::Variant2 => "2",
+            Self::Variant3 => "3",
+        })
     }
 }
 impl Default for NumericEnumTesting {
diff --git a/samples/client/petstore/rust/hyper0x/petstore/src/models/numeric_enum_testing.rs b/samples/client/petstore/rust/hyper0x/petstore/src/models/numeric_enum_testing.rs
index 9b8f0cb0465..e3681aa6177 100644
--- a/samples/client/petstore/rust/hyper0x/petstore/src/models/numeric_enum_testing.rs
+++ b/samples/client/petstore/rust/hyper0x/petstore/src/models/numeric_enum_testing.rs
@@ -24,14 +24,14 @@ pub enum NumericEnumTesting {
 
 }
 
-impl ToString for NumericEnumTesting {
-    fn to_string(&self) -> String {
-        match self {
-            Self::Variant0 => String::from("0"),
-            Self::Variant1 => String::from("1"),
-            Self::Variant2 => String::from("2"),
-            Self::Variant3 => String::from("3"),
-        }
+impl std::fmt::Display for NumericEnumTesting {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}", match self {
+            Self::Variant0 => "0",
+            Self::Variant1 => "1",
+            Self::Variant2 => "2",
+            Self::Variant3 => "3",
+        })
     }
 }
 impl Default for NumericEnumTesting {
diff --git a/samples/client/petstore/rust/reqwest/petstore-async-middleware/src/models/numeric_enum_testing.rs b/samples/client/petstore/rust/reqwest/petstore-async-middleware/src/models/numeric_enum_testing.rs
index 9b8f0cb0465..e3681aa6177 100644
--- a/samples/client/petstore/rust/reqwest/petstore-async-middleware/src/models/numeric_enum_testing.rs
+++ b/samples/client/petstore/rust/reqwest/petstore-async-middleware/src/models/numeric_enum_testing.rs
@@ -24,14 +24,14 @@ pub enum NumericEnumTesting {
 
 }
 
-impl ToString for NumericEnumTesting {
-    fn to_string(&self) -> String {
-        match self {
-            Self::Variant0 => String::from("0"),
-            Self::Variant1 => String::from("1"),
-            Self::Variant2 => String::from("2"),
-            Self::Variant3 => String::from("3"),
-        }
+impl std::fmt::Display for NumericEnumTesting {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}", match self {
+            Self::Variant0 => "0",
+            Self::Variant1 => "1",
+            Self::Variant2 => "2",
+            Self::Variant3 => "3",
+        })
     }
 }
 impl Default for NumericEnumTesting {
diff --git a/samples/client/petstore/rust/reqwest/petstore-async/src/models/numeric_enum_testing.rs b/samples/client/petstore/rust/reqwest/petstore-async/src/models/numeric_enum_testing.rs
index 9b8f0cb0465..e3681aa6177 100644
--- a/samples/client/petstore/rust/reqwest/petstore-async/src/models/numeric_enum_testing.rs
+++ b/samples/client/petstore/rust/reqwest/petstore-async/src/models/numeric_enum_testing.rs
@@ -24,14 +24,14 @@ pub enum NumericEnumTesting {
 
 }
 
-impl ToString for NumericEnumTesting {
-    fn to_string(&self) -> String {
-        match self {
-            Self::Variant0 => String::from("0"),
-            Self::Variant1 => String::from("1"),
-            Self::Variant2 => String::from("2"),
-            Self::Variant3 => String::from("3"),
-        }
+impl std::fmt::Display for NumericEnumTesting {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}", match self {
+            Self::Variant0 => "0",
+            Self::Variant1 => "1",
+            Self::Variant2 => "2",
+            Self::Variant3 => "3",
+        })
     }
 }
 impl Default for NumericEnumTesting {
diff --git a/samples/client/petstore/rust/reqwest/petstore-avoid-box/src/models/numeric_enum_testing.rs b/samples/client/petstore/rust/reqwest/petstore-avoid-box/src/models/numeric_enum_testing.rs
index 9b8f0cb0465..e3681aa6177 100644
--- a/samples/client/petstore/rust/reqwest/petstore-avoid-box/src/models/numeric_enum_testing.rs
+++ b/samples/client/petstore/rust/reqwest/petstore-avoid-box/src/models/numeric_enum_testing.rs
@@ -24,14 +24,14 @@ pub enum NumericEnumTesting {
 
 }
 
-impl ToString for NumericEnumTesting {
-    fn to_string(&self) -> String {
-        match self {
-            Self::Variant0 => String::from("0"),
-            Self::Variant1 => String::from("1"),
-            Self::Variant2 => String::from("2"),
-            Self::Variant3 => String::from("3"),
-        }
+impl std::fmt::Display for NumericEnumTesting {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}", match self {
+            Self::Variant0 => "0",
+            Self::Variant1 => "1",
+            Self::Variant2 => "2",
+            Self::Variant3 => "3",
+        })
     }
 }
 impl Default for NumericEnumTesting {
diff --git a/samples/client/petstore/rust/reqwest/petstore-awsv4signature/src/models/numeric_enum_testing.rs b/samples/client/petstore/rust/reqwest/petstore-awsv4signature/src/models/numeric_enum_testing.rs
index 9b8f0cb0465..e3681aa6177 100644
--- a/samples/client/petstore/rust/reqwest/petstore-awsv4signature/src/models/numeric_enum_testing.rs
+++ b/samples/client/petstore/rust/reqwest/petstore-awsv4signature/src/models/numeric_enum_testing.rs
@@ -24,14 +24,14 @@ pub enum NumericEnumTesting {
 
 }
 
-impl ToString for NumericEnumTesting {
-    fn to_string(&self) -> String {
-        match self {
-            Self::Variant0 => String::from("0"),
-            Self::Variant1 => String::from("1"),
-            Self::Variant2 => String::from("2"),
-            Self::Variant3 => String::from("3"),
-        }
+impl std::fmt::Display for NumericEnumTesting {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}", match self {
+            Self::Variant0 => "0",
+            Self::Variant1 => "1",
+            Self::Variant2 => "2",
+            Self::Variant3 => "3",
+        })
     }
 }
 impl Default for NumericEnumTesting {
diff --git a/samples/client/petstore/rust/reqwest/petstore/src/models/numeric_enum_testing.rs b/samples/client/petstore/rust/reqwest/petstore/src/models/numeric_enum_testing.rs
index 9b8f0cb0465..e3681aa6177 100644
--- a/samples/client/petstore/rust/reqwest/petstore/src/models/numeric_enum_testing.rs
+++ b/samples/client/petstore/rust/reqwest/petstore/src/models/numeric_enum_testing.rs
@@ -24,14 +24,14 @@ pub enum NumericEnumTesting {
 
 }
 
-impl ToString for NumericEnumTesting {
-    fn to_string(&self) -> String {
-        match self {
-            Self::Variant0 => String::from("0"),
-            Self::Variant1 => String::from("1"),
-            Self::Variant2 => String::from("2"),
-            Self::Variant3 => String::from("3"),
-        }
+impl std::fmt::Display for NumericEnumTesting {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}", match self {
+            Self::Variant0 => "0",
+            Self::Variant1 => "1",
+            Self::Variant2 => "2",
+            Self::Variant3 => "3",
+        })
     }
 }
 impl Default for NumericEnumTesting {