The US automotive industry is projected to increase digital ad spending from $5.07 billion in 2013 to $7.80 billion by 2017, focusing heavily on mobile and social media marketing. A significant shift in consumer behavior shows that potential buyers are highly influenced online throughout the purchase cycle, necessitating adaptive strategies from manufacturers and dealerships. The document highlights the importance of brand awareness and consumer interaction at every stage of the automotive purchase cycle to foster loyalty and advocacy.