frontend/src/features/vehicles/pages/VehicleDetailPage.tsx

@@ -420,7 +420,7 @@ export const VehicleDetailPage: React.FC = () => {
             <h3 className="text-lg font-medium text-gray-900 dark:text-avus mb-4">
               Purchase Information
             </h3>
-            <div className="grid grid-cols-2 gap-4">
+            <div className="grid grid-cols-1 sm:grid-cols-2 gap-4">
               <DetailField
                 label="Purchase Price"
                 value={vehicle.purchasePrice ? `$${vehicle.purchasePrice.toLocaleString('en-US', { minimumFractionDigits: 2, maximumFractionDigits: 2 })}` : undefined}