diff --git a/perception/multi_object_tracker/src/tracker/model/big_vehicle_tracker.cpp b/perception/multi_object_tracker/src/tracker/model/big_vehicle_tracker.cpp
index 7cb2772f006c3..4c874691169fe 100644
--- a/perception/multi_object_tracker/src/tracker/model/big_vehicle_tracker.cpp
+++ b/perception/multi_object_tracker/src/tracker/model/big_vehicle_tracker.cpp
@@ -478,7 +478,8 @@ bool BigVehicleTracker::getTrackedObject(
   pose_with_cov.covariance[utils::MSG_COV_IDX::YAW_YAW] = P(IDX::YAW, IDX::YAW);
 
   // twist
-  twist_with_cov.twist.linear.x = X_t(IDX::VX);
+  twist_with_cov.twist.linear.x = X_t(IDX::VX) * std::cos(X_t(IDX::SLIP));
+  twist_with_cov.twist.linear.y = X_t(IDX::VX) * std::sin(X_t(IDX::SLIP));
   twist_with_cov.twist.angular.z =
     X_t(IDX::VX) / lr_ * std::sin(X_t(IDX::SLIP));  // yaw_rate = vx_k / l_r * sin(slip_k)
   // twist covariance
diff --git a/perception/multi_object_tracker/src/tracker/model/normal_vehicle_tracker.cpp b/perception/multi_object_tracker/src/tracker/model/normal_vehicle_tracker.cpp
index 12a84a7c7929c..455b742f416cb 100644
--- a/perception/multi_object_tracker/src/tracker/model/normal_vehicle_tracker.cpp
+++ b/perception/multi_object_tracker/src/tracker/model/normal_vehicle_tracker.cpp
@@ -494,7 +494,8 @@ bool NormalVehicleTracker::getTrackedObject(
   pose_with_cov.covariance[utils::MSG_COV_IDX::YAW_YAW] = P(IDX::YAW, IDX::YAW);
 
   // twist
-  twist_with_cov.twist.linear.x = X_t(IDX::VX);
+  twist_with_cov.twist.linear.x = X_t(IDX::VX) * std::cos(X_t(IDX::SLIP));
+  twist_with_cov.twist.linear.y = X_t(IDX::VX) * std::sin(X_t(IDX::SLIP));
   twist_with_cov.twist.angular.z =
     X_t(IDX::VX) / lr_ * std::sin(X_t(IDX::SLIP));  // yaw_rate = vx_k / l_r * sin(slip_k)
   // twist covariance