diff --git a/.gitignore b/.gitignore
index d0ab670..c1c7cbe 100644
--- a/.gitignore
+++ b/.gitignore
@@ -59,6 +59,9 @@ coverage.xml
 local_settings.py
 db.sqlite3
 
+# NavVis test data.
+scantools/tests/test_data/*
+
 # Flask stuff:
 instance/
 .webassets-cache
diff --git a/scantools/tests/download_navvis_test_data.py b/scantools/tests/download_navvis_test_data.py
new file mode 100644
index 0000000..f19318f
--- /dev/null
+++ b/scantools/tests/download_navvis_test_data.py
@@ -0,0 +1,32 @@
+import requests
+import hashlib
+import zipfile
+import os
+
+datasetUrl = "https://github.com/microsoft/lamar-benchmark/releases/download/v1.1/NavVisTestData.zip"
+expectedSha1 = "0a28991004e58d9dc51167ea23f9f2ba66b26ab5"
+zipFileName = "NavVisTestData.zip"
+
+print("Downloading NavVis test data...")
+
+if(os.path.exists(zipFileName)):
+    os.remove(zipFileName)
+
+if(os.path.exists("test_data")):
+    os.rmdir("test_data")
+
+response = requests.get(datasetUrl)
+if response.status_code == 200:
+    sha1 = hashlib.sha1(response.content).hexdigest()
+    if sha1 == expectedSha1:
+        with open(zipFileName, "wb") as file:
+            file.write(response.content)
+        with zipfile.ZipFile(zipFileName, "r") as zip_ref:
+            zip_ref.extractall(".")
+        os.remove(zipFileName)
+        print("NavVis test data downloaded and extracted successfully.")
+    else:
+        print("SHA1 hash mismatch. The downloaded file may be corrupted.")
+else:
+    print("Failed to download the zip file from", datasetUrl)
+