Mack Grubbs Hyundai is located near Gulfport in Hattiesburg, MS. Our friendly service technicians are trained and ready to assist you with all of your vehicle repair and maintenance needs. Call us today to schedule your next visit! Mack Grubbs Hyundai is located near Gulfport in Hattiesburg, MS. Our friendly service technicians are trained and ready to assist you with all of your vehicle repair and maintenance needs. Call us today to schedule your next visit!