diff --git a/data/grib_data_files.txt b/data/grib_data_files.txt
index 43b767449..2774f12c7 100644
--- a/data/grib_data_files.txt
+++ b/data/grib_data_files.txt
@@ -87,3 +87,4 @@ v.grib2
 msl.octa.glob.grib1
 test_file.grib2
 gfs.complex.mvmu.grib2
+mercator.grib2
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index a6ee4dfb1..b3d03993f 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -154,6 +154,7 @@ list(APPEND tests_data_reqd
     pseudo_budg
     grib_gridType
     grib_octahedral
+    grib_mercator
     grib_global
     grib_concept
     grib_decimalPrecision
diff --git a/tests/grib_mercator.sh b/tests/grib_mercator.sh
new file mode 100755
index 000000000..1fb3f44bd
--- /dev/null
+++ b/tests/grib_mercator.sh
@@ -0,0 +1,34 @@
+#!/bin/sh
+# (C) Copyright 2005- ECMWF.
+#
+# This software is licensed under the terms of the Apache Licence Version 2.0
+# which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
+# 
+# In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
+# virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
+
+. ./include.sh
+
+# Define a common label for all the tmp files
+label="grib_mercator_test"
+tempOut="temp.${label}.out"
+tempFilter="temp.${label}.filt"
+
+input=${data_dir}/mercator.grib2
+grib_check_key_equals $input "gridType" "mercator"
+${tools_dir}/grib_get_data $input > $tempOut
+numlines=`wc -l $tempOut | awk '{print $1}'`
+[ "$numlines" = "2465" ]     # 1 + numberOfDataPoints
+
+
+# Check other iterator-related keys
+cat > $tempFilter <<EOF
+ print "[latLonValues]";
+ print "[distinctLatitudes]";
+ print "[distinctLongitudes]";
+EOF
+
+${tools_dir}/grib_filter $tempFilter $input
+
+# Clean up
+rm -f $tempFilter $tempOut