diff --git a/unit_tests/test_basic_math/test_interpolation_3d.cpp b/unit_tests/test_basic_math/test_interpolation_3d.cpp
index 3cdca23ef3..9e01cb9642 100644
--- a/unit_tests/test_basic_math/test_interpolation_3d.cpp
+++ b/unit_tests/test_basic_math/test_interpolation_3d.cpp
@@ -28,6 +28,8 @@ static float getValue(float rpm, float maf) {
 	return x.getValue(rpm, maf);
 }
 
+#define EXPECT_NEAR_M4(a, b) EXPECT_NEAR(a, b, 1e-4)
+
 static void newTestToComfirmInterpolation() {
 // here's how the table loos like:
 //
@@ -40,74 +42,73 @@ static void newTestToComfirmInterpolation() {
 
 
 	// let's start by testing corners
-	ASSERT_EQ(3, getValue(/*rpm*/200, 2));
-	ASSERT_NEAR( 4,  getValue(/*rpm*/200, 3), EPS4D) << "low rpm high load";
+	EXPECT_NEAR_M4(3, getValue(/*rpm*/200, 2));
+	EXPECT_NEAR_M4(4, getValue(/*rpm*/200, 3)) << "low rpm high load";
 
-	ASSERT_EQ(10, getValue(/*rpm*/300, 2));
-	ASSERT_EQ(200, getValue(/*rpm*/300, 3));
+	EXPECT_NEAR_M4(10, getValue(/*rpm*/300, 2));
+	EXPECT_NEAR_M4(200, getValue(/*rpm*/300, 3));
 
 	// now testing middles of cell sides
-	assertEqualsM("low rpm middle", 3.5, getValue(/*rpm*/200, 2.5));
-	ASSERT_EQ( 105,  getValue(/*rpm*/300, 2.5)) << "high rpm      ";
+	EXPECT_NEAR_M4(3.5, getValue(/*rpm*/200, 2.5)) << "low rpm middle";
+	EXPECT_NEAR_M4(105, getValue(/*rpm*/300, 2.5)) << "high rpm";
 
-	assertEqualsM("low load middle", 6.5, getValue(/*rpm*/250, 2));
-	ASSERT_NEAR( 102,  getValue(/*rpm*/250, 3), EPS4D) << "               ";
+	EXPECT_NEAR_M4(6.5, getValue(/*rpm*/250, 2)) << "low load middle";
+	EXPECT_NEAR_M4(102, getValue(/*rpm*/250, 3));
 
 	// slowly go from middle side towards center
-	assertEqualsM("middle @ 2.1  ",16.05, getValue(/*rpm*/250, 2.1));
-	assertEqualsM("middle @ 2.2   ",25.6, getValue(/*rpm*/250, 2.2));
-	assertEqualsM("middle @ 2.3  ",35.15, getValue(/*rpm*/250, 2.3));
+	EXPECT_NEAR_M4(16.05, getValue(/*rpm*/250, 2.1)) << "middle @ 2.1";
+	EXPECT_NEAR_M4(25.6, getValue(/*rpm*/250, 2.2)) << "middle @ 2.2";
+	EXPECT_NEAR_M4(35.15, getValue(/*rpm*/250, 2.3)) << "middle @ 2.3";
 
-	assertEqualsM("middle cell    ", 54.25, getValue(/*rpm*/250, 2.5));
+	EXPECT_NEAR_M4(54.25, getValue(/*rpm*/250, 2.5)) << "middle cell";
 
 	// issue #604: interpolation outside of the table
 	// X above the range
-	assertEqualsM("800 @ 2.1  ",230, getValue(/*rpm*/800, 2.1));
-	assertEqualsM("800 @ 2.3  ",290, getValue(/*rpm*/800, 2.3));
-	assertEqualsM("800 @ 3.3  ",530, getValue(/*rpm*/800, 3.3));
+	EXPECT_NEAR_M4(230, getValue(/*rpm*/800, 2.1)) << "800 @ 2.1";
+	EXPECT_NEAR_M4(290, getValue(/*rpm*/800, 2.3)) << "800 @ 2.3";
+	EXPECT_NEAR_M4(530, getValue(/*rpm*/800, 3.3)) << "800 @ 3.3";
 
 	// X below the range
-	assertEqualsM("-810 @ 2.1  ",2.1, getValue(/*rpm*/-810, 2.1));
-	assertEqualsM("-820 @ 2.3  ",2.3, getValue(/*rpm*/-820, 2.3));
+	EXPECT_NEAR_M4(2.1, getValue(/*rpm*/-810, 2.1)) << "-810 @ 2.1";
+	EXPECT_NEAR_M4(2.3, getValue(/*rpm*/-820, 2.3)) << "-820 @ 2.3";
 
 	// Y above the range
-	ASSERT_EQ( 330,  getValue(/*rpm*/310, 12.1)) << "310 @ 12.1  ";
-	ASSERT_EQ( 360,  getValue(/*rpm*/320, 12.3)) << "320 @ 12.3  ";
+	EXPECT_NEAR_M4(330, getValue(/*rpm*/310, 12.1)) << "310 @ 12.1";
+	EXPECT_NEAR_M4(360, getValue(/*rpm*/320, 12.3)) << "320 @ 12.3";
 
 	// Y below the range
-	assertEqualsM("310 @ -12.1  ", 3.1, getValue(/*rpm*/310, -12.1));
-	assertEqualsM("320 @ -12.3  ", 3.2, getValue(/*rpm*/320, -12.3));
+	EXPECT_NEAR_M4(3.1, getValue(/*rpm*/310, -12.1)) << "310 @ -12.1";
+	EXPECT_NEAR_M4(3.2, getValue(/*rpm*/320, -12.3)) << "320 @ -12.3";
 }
 
 TEST(misc, testInterpolate3d) {
 	printf("*** no interpolation here 1\r\n");
-	ASSERT_FLOAT_EQ(2, getValue(100, 2));
+	EXPECT_NEAR_M4(2, getValue(100, 2));
 
 	printf("*** no interpolation here 2\r\n");
-	ASSERT_NEAR(5, getValue(200, 4), EPS4D);
+	EXPECT_NEAR_M4(5, getValue(200, 4));
 
 	printf("*** rpm interpolated value expected1\r\n");
-	ASSERT_FLOAT_EQ(2.5, getValue(150, 2));
+	EXPECT_NEAR_M4(2.5, getValue(150, 2));
 
 	printf("*** rpm interpolated value expected2\r\n");
-	ASSERT_FLOAT_EQ(102, getValue(250, 3));
+	EXPECT_NEAR_M4(102, getValue(250, 3));
 
 	printf("*** both rpm and maf interpolated value expected\r\n");
-	ASSERT_FLOAT_EQ(361, getValue(335.3, 3.551));
+	EXPECT_NEAR_M4(361, getValue(335.3, 3.551));
 
 	printf("*** both rpm and maf interpolated value expected 2\r\n");
-	ASSERT_FLOAT_EQ(203.6, getValue(410.01, 2.012));
+	EXPECT_NEAR_M4(203.6, getValue(410.01, 2.012));
 
 	printf("*** both rpm and maf interpolated value expected 3\r\n");
-	ASSERT_FLOAT_EQ(600, getValue(1000000, 1000));
+	EXPECT_NEAR_M4(600, getValue(1000000, 1000));
 
 	printf("*** both rpm and maf interpolated value expected 4\r\n");
 
-	ASSERT_FLOAT_EQ(4, getValue(410.01, -1));
+	EXPECT_NEAR_M4(4, getValue(410.01, -1));
 
 
-	ASSERT_FLOAT_EQ(1, getValue(-1, -1));
+	EXPECT_NEAR_M4(1, getValue(-1, -1));
 
 	newTestToComfirmInterpolation();
-
 }