diff --git a/backend/src/features/vehicles/api/vehicles.controller.ts b/backend/src/features/vehicles/api/vehicles.controller.ts
index a9e7f33..103fc72 100644
--- a/backend/src/features/vehicles/api/vehicles.controller.ts
+++ b/backend/src/features/vehicles/api/vehicles.controller.ts
@@ -416,7 +416,10 @@ export class VehiclesController {
         userId,
         hasYear: !!decodedData.year.value,
         hasMake: !!decodedData.make.value,
-        hasModel: !!decodedData.model.value
+        hasModel: !!decodedData.model.value,
+        hasTrim: !!decodedData.trimLevel.value,
+        hasEngine: !!decodedData.engine.value,
+        hasTransmission: !!decodedData.transmission.value,
       });
 
       return reply.code(200).send(decodedData);
diff --git a/backend/src/features/vehicles/domain/vehicles.service.ts b/backend/src/features/vehicles/domain/vehicles.service.ts
index f9f78c7..56a3e21 100644
--- a/backend/src/features/vehicles/domain/vehicles.service.ts
+++ b/backend/src/features/vehicles/domain/vehicles.service.ts
@@ -679,7 +679,8 @@ export class VehiclesService {
     logger.debug('VIN decode raw values', {
       vin: response.vin,
       year: sourceYear, make: sourceMake, model: sourceModel,
-      trim: sourceTrim, confidence: response.confidence
+      trim: sourceTrim, engine: sourceEngine, transmission: sourceTransmission,
+      confidence: response.confidence
     });
 
     // Year is always high confidence if present (exact numeric match)
diff --git a/ocr/app/engines/gemini_engine.py b/ocr/app/engines/gemini_engine.py
index 1087736..4bc92cf 100644
--- a/ocr/app/engines/gemini_engine.py
+++ b/ocr/app/engines/gemini_engine.py
@@ -398,7 +398,12 @@ class GeminiEngine:
                     vin,
                 )
 
-            logger.info("Gemini decoded VIN %s (confidence=%.2f)", vin, raw.get("confidence", 0))
+            logger.info(
+                "Gemini decoded VIN %s (confidence=%.2f) raw=%s",
+                vin,
+                raw.get("confidence", 0),
+                json.dumps(raw, default=str),
+            )
 
             return VinDecodeResult(
                 year=resolved_year if resolved_year else raw.get("year"),