diff --git a/internal/core/queries/decode_vin.go b/internal/core/queries/decode_vin.go
index da0f9d5d..7546ede6 100644
--- a/internal/core/queries/decode_vin.go
+++ b/internal/core/queries/decode_vin.go
@@ -123,6 +123,11 @@ func (dc DecodeVINQueryHandler) Handle(ctx context.Context, query *DecodeVINQuer
 		metrics.Success.With(prometheus.Labels{"method": VinExists}).Inc()
 		return r, nil
 	}
+	// check if vin has failed in the past, and if it has just fail now
+	vinAlreadyFailed, _ := models.FailedVinDecodes(models.FailedVinDecodeWhere.Vin.EQ(vinObj.String())).Exists(ctx, dc.dbs().Writer)
+	if vinAlreadyFailed {
+		return nil, fmt.Errorf("vin %s failed decoding already", vinObj.String())
+	}
 
 	localLog.Info().Msgf("Start Decode VIN ")
 
diff --git a/internal/core/queries/decode_vin_test.go b/internal/core/queries/decode_vin_test.go
index a32068d2..2ca6b83c 100644
--- a/internal/core/queries/decode_vin_test.go
+++ b/internal/core/queries/decode_vin_test.go
@@ -10,6 +10,7 @@ import (
 	"testing"
 
 	mock_repository "github.com/DIMO-Network/device-definitions-api/internal/infrastructure/db/repositories/mocks"
+	"github.com/aarondl/sqlboiler/v4/types"
 	"github.com/segmentio/ksuid"
 
 	coremodels "github.com/DIMO-Network/device-definitions-api/internal/core/models"
@@ -87,6 +88,21 @@ func (s *DecodeVINQueryHandlerSuite) TearDownSuite() {
 	}
 }
 
+func (s *DecodeVINQueryHandlerSuite) TestHandle_Failure_ExistingFailedVIN() {
+	const vin = "1FMCU0G61MUA52727" // ford escape 2021
+
+	fvin := models.FailedVinDecode{
+		Vin:          vin,
+		VendorsTried: types.StringArray{"drivly"},
+	}
+	err := fvin.Insert(s.ctx, s.pdb.DBS().Writer, boil.Infer())
+	s.Require().NoError(err)
+
+	qryResult, err := s.queryHandler.Handle(s.ctx, &DecodeVINQuery{VIN: vin, Country: country})
+	s.Error(err)
+	s.Nil(qryResult)
+}
+
 func (s *DecodeVINQueryHandlerSuite) TestHandle_Success_WithExistingDD_UpdatesAttributes_CreatesStyle() {
 	ctx := context.Background()
 	const vin = "1FMCU0G61MUA52727" // ford escape 2021
diff --git a/internal/core/services/vin_decoding_service.go b/internal/core/services/vin_decoding_service.go
index e736d1f5..4360e1f1 100644
--- a/internal/core/services/vin_decoding_service.go
+++ b/internal/core/services/vin_decoding_service.go
@@ -85,8 +85,8 @@ func (c vinDecodingService) GetVIN(ctx context.Context, vin string, provider cor
 
 	if len(providersToTry) == 0 {
 		if provider == coremodels.AllProviders {
-			// fill in the list, future could do something country specific
-			providersToTry = append(providersToTry, coremodels.DrivlyProvider, coremodels.VincarioProvider, coremodels.DATGroupProvider, coremodels.Japan17VIN)
+			// fill in the list, future could do something country specific. removed DAT group
+			providersToTry = append(providersToTry, coremodels.DrivlyProvider, coremodels.VincarioProvider, coremodels.Japan17VIN, coremodels.AutoIsoProvider)
 		} else {
 			// use the specified override
 			providersToTry = append(providersToTry, provider)
diff --git a/internal/core/services/vin_decoding_service_test.go b/internal/core/services/vin_decoding_service_test.go
index 543be6ec..24c78c94 100644
--- a/internal/core/services/vin_decoding_service_test.go
+++ b/internal/core/services/vin_decoding_service_test.go
@@ -4,7 +4,6 @@ import (
 	"context"
 	_ "embed"
 	"encoding/json"
-	"encoding/xml"
 	"fmt"
 	"testing"
 
@@ -262,29 +261,3 @@ func (s *VINDecodingServiceSuite) Test_VINDecodingService_DD_Default_Success() {
 	s.NoError(err)
 	assert.Equal(s.T(), result.VIN, vin)
 }
-
-//go:embed datgroup_resp.xml
-var testDATGroupXML []byte
-
-func (s *VINDecodingServiceSuite) Test_VINDecodingService_DATGroup_Success() {
-	ctx := context.Background()
-	const vin = "ZFADEXTESTSTUB001"
-	const country = "TR"
-
-	vinInfoResp := &coremodels.DATGroupInfoResponse{
-		VIN:               vin,
-		MainTypeGroupName: "Test",
-		Year:              2023,
-	}
-	_ = xml.Unmarshal(testDATGroupXML, vinInfoResp)
-
-	s.mockDATGroupAPIService.EXPECT().GetVINv2(vin).Times(1).Return(vinInfoResp, nil, nil)
-
-	_ = dbtesthelper.SetupCreateDeviceType(s.T(), s.pdb)
-
-	result, _, err := s.vinDecodingService.GetVIN(ctx, vin, coremodels.DATGroupProvider, country)
-
-	s.NoError(err)
-	assert.Equal(s.T(), result.VIN, vin)
-	assert.Equal(s.T(), result.Source, coremodels.DATGroupProvider)
-}