diff --git a/TUnit.Core/DataSources/TestDataFormatter.cs b/TUnit.Core/DataSources/TestDataFormatter.cs
index c7ecdf87cb..b1cd16f0aa 100644
--- a/TUnit.Core/DataSources/TestDataFormatter.cs
+++ b/TUnit.Core/DataSources/TestDataFormatter.cs
@@ -26,31 +26,30 @@ public static string FormatArguments(object?[] arguments, List<Func<object?, str
             return string.Empty;
         }
 
-        var formattedArgs = new string[arguments.Length];
-        for (var i = 0; i < arguments.Length; i++)
+        var builder = StringBuilderPool.Get();
+        try
         {
-            formattedArgs[i] = ArgumentFormatter.Format(arguments[i], formatters);
+            for (var i = 0; i < arguments.Length; i++)
+            {
+                if (i > 0)
+                {
+                    builder.Append(", ");
+                }
+                builder.Append(ArgumentFormatter.Format(arguments[i], formatters));
+            }
+            return builder.ToString();
+        }
+        finally
+        {
+            StringBuilderPool.Return(builder);
         }
-        return string.Join(", ", formattedArgs);
     }
 
     /// <summary>
     /// Formats an array of arguments using default formatting
     /// </summary>
     public static string FormatArguments(object?[] arguments)
-    {
-        if (arguments.Length == 0)
-        {
-            return string.Empty;
-        }
-
-        var formattedArgs = new string[arguments.Length];
-        for (var i = 0; i < arguments.Length; i++)
-        {
-            formattedArgs[i] = ArgumentFormatter.Format(arguments[i], []);
-        }
-        return string.Join(", ", formattedArgs);
-    }
+        => FormatArguments(arguments, []);
 
     /// <summary>
     /// Creates a display name from test metadata and arguments