diff --git a/modules/services/vehicle-stat-service/src/main/java/com/lingniu/ingest/vehiclestat/config/VehicleStatAutoConfiguration.java b/modules/services/vehicle-stat-service/src/main/java/com/lingniu/ingest/vehiclestat/config/VehicleStatAutoConfiguration.java
index f97e7a71..4bfdffa6 100644
--- a/modules/services/vehicle-stat-service/src/main/java/com/lingniu/ingest/vehiclestat/config/VehicleStatAutoConfiguration.java
+++ b/modules/services/vehicle-stat-service/src/main/java/com/lingniu/ingest/vehiclestat/config/VehicleStatAutoConfiguration.java
@@ -28,6 +28,13 @@ import java.time.ZoneId;
 @ConditionalOnProperty(prefix = "lingniu.ingest.vehicle-stat", name = "enabled", havingValue = "true")
 public class VehicleStatAutoConfiguration {
 
+    @Bean
+    @ConditionalOnProperty(prefix = "lingniu.ingest.vehicle-stat.jt808", name = "state-store")
+    public Object rejectedLegacyJt808MileageStateStore() {
+        throw new IllegalStateException(
+                "vehicle-stat.jt808.state-store has been removed; JT808 daily mileage uses vehicle_stat_metric only");
+    }
+
     @Bean
     @ConditionalOnBean(JdbcTemplate.class)
     @ConditionalOnMissingBean
diff --git a/modules/services/vehicle-stat-service/src/test/java/com/lingniu/ingest/vehiclestat/config/VehicleStatAutoConfigurationTest.java b/modules/services/vehicle-stat-service/src/test/java/com/lingniu/ingest/vehiclestat/config/VehicleStatAutoConfigurationTest.java
index c700558c..059dbf03 100644
--- a/modules/services/vehicle-stat-service/src/test/java/com/lingniu/ingest/vehiclestat/config/VehicleStatAutoConfigurationTest.java
+++ b/modules/services/vehicle-stat-service/src/test/java/com/lingniu/ingest/vehiclestat/config/VehicleStatAutoConfigurationTest.java
@@ -74,17 +74,17 @@ class VehicleStatAutoConfigurationTest {
     }
 
     @Test
-    void ignoresLegacyStateStorePropertyAndUsesMetricRepositoryOnly() {
+    void rejectsLegacyStateStorePropertyInsteadOfCreatingHiddenRuntimeMode() {
         contextRunner
                 .withBean(JdbcTemplate.class, () -> mock(JdbcTemplate.class))
                 .withPropertyValues(
                         "lingniu.ingest.vehicle-stat.enabled=true",
                         "lingniu.ingest.vehicle-stat.jt808.enabled=true",
                         "lingniu.ingest.vehicle-stat.jt808.state-store=memory")
-                .run(context -> {
-                    assertThat(context).hasSingleBean(Jt808MileageStreamProcessor.class);
-                    assertThat(context).hasSingleBean(VehicleStatEnvelopeIngestor.class);
-                });
+                .run(context -> assertThat(context.getStartupFailure())
+                        .hasRootCauseInstanceOf(IllegalStateException.class)
+                        .hasMessageContaining("vehicle-stat.jt808.state-store has been removed")
+                        .hasMessageContaining("vehicle_stat_metric"));
     }
 
     @Test