diff --git a/test/unit/math/rev/prob/wiener_full_test.cpp b/test/unit/math/rev/prob/wiener_full_test.cpp
index e13a51e84f6..262e6ad354a 100644
--- a/test/unit/math/rev/prob/wiener_full_test.cpp
+++ b/test/unit/math/rev/prob/wiener_full_test.cpp
@@ -207,3 +207,96 @@ TEST(ProbWienerFullPrec, wiener_full_prec_all_scalar) {
     check_scalar_types(f_st0, st0[i], result[i], dst0[i]);
   }
 }
+
+
+
+
+
+
+
+
+// CHECK THAT ALL VALID Vector TYPES ARE ACCEPTED
+template <typename F>
+void check_vector_types(F& f, std::vector<double> value, double res) {
+  // - f: Function where all inputs are vectors
+  // - value: value to be used for the parameter
+  // - res: expected result of calling `f` with `value`
+  // - deriv: expected result of partial of f with respect to
+  // the parameter in `value`
+  using stan::math::var;
+  double err_tol = 2e-4;
+
+  // type double
+  EXPECT_NEAR(f(value), res, err_tol);
+
+  // type var with derivative
+  var result_var = f(value);
+  result_var.grad();
+  EXPECT_NEAR(value_of(result_var), res, err_tol);
+}
+
+TEST(ProbWienerFull, wiener_full_all_vector) {
+  // tests all parameter types individually, with other
+  // parameters set to std::vector<double>
+  using stan::math::wiener_full_lpdf;
+
+  std::vector<double> rt{1, 1, 1, 1, 1, 1, 1, 1, 1};
+  std::vector<double> a{1, 1, 1, 1, 1, 1, 1, 1, 1};
+  std::vector<double> v{1, 1, 1, 1, 1, 1, 1, 1, 1};
+  std::vector<double> w{0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5, 0.5};
+  std::vector<double> t0{0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0.2, 0};
+  std::vector<double> sv{0.1, 0.1, 0.1, 0, 0.1, 0, 0, 0, 0};
+  std::vector<double> sw{0.1, 0.1, 0, 0.1, 0, 0.1, 0, 0, 0};
+  std::vector<double> st0{0.1, 0, 0.1, 0.1, 0, 0, 0.1, 0, 0};
+
+  double result{-24.307593};
+
+	// rt
+	auto f_rt = [&](auto value) {
+	  return wiener_full_lpdf(value, a, t0, w, v, sv, sw,
+							  st0);
+	};
+	check_vector_types(f_rt, rt, result);
+	// a
+	auto f_a = [&](auto value) {
+	  return wiener_full_lpdf(rt, value, t0, w, v, sv, sw,
+							  st0);
+	};
+	check_vector_types(f_a, a, result);
+	// v
+	auto f_v = [&](auto value) {
+	  return wiener_full_lpdf(rt, a, t0, w, value, sv, sw,
+							  st0);
+	};
+	check_vector_types(f_v, v, result);
+	// w
+	auto f_w = [&](auto value) {
+	  return wiener_full_lpdf(rt, a, t0, value, v, sv, sw,
+							  st0);
+	};
+	check_vector_types(f_w, w, result);
+	// t0
+	auto f_t0 = [&](auto value) {
+	  return wiener_full_lpdf(rt, a, value, w, v, sv, sw,
+							  st0);
+	};
+	check_vector_types(f_t0, t0, result);
+	// sv
+	auto f_sv = [&](auto value) {
+	  return wiener_full_lpdf(rt, a, t0, w, v, value, sw,
+							  st0);
+	};
+	check_vector_types(f_sv, sv, result);
+	// sw
+	auto f_sw = [&](auto value) {
+	  return wiener_full_lpdf(rt, a, t0, w, v, sv, value,
+							  st0);
+	};
+	check_vector_types(f_sw, sw, result);
+	// st0
+	auto f_st0 = [&](auto value) {
+	  return wiener_full_lpdf(rt, a, t0, w, v, sv, sw,
+							  value);
+	};
+	check_vector_types(f_st0, st0, result);
+ }
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