The automotive detailing industry in South Jakarta is experiencing heightened competition, impacting the revenue of Resik Wangi Auto Detailing. This thesis investigates the factors contributing to the revenue decline and proposes a comprehensive marketing strategy focused on product diversification and digital marketing to attract potential customers and increase revenue. The study employs a mixed-methods approach, combining quantitative surveys and qualitative interviews to gather data on customer preferences, market conditions, and business performance. The research identifies that the primary internal challenge is the lack of diversified services, while externally, increased competition and consumer behavior heavily influenced by digital marketing and service quality are critical factors. Key findings indicate that product diversification, particularly through bundled service packages like the “Signature Menu” and “Ultimate Menu,” can significantly enhance customer satisfaction and loyalty. Competitive pricing strategies and a robust digital marketing presence are essential in attracting and retaining customers. The study concludes that by implementing these strategies, Resik Wangi can effectively address its revenue challenges and achieve sustainable business growth.Recommendations for Resik Wangi include the immediate implementation of diversified service packages, enhanced digital marketing efforts, competitive pricing, and a strong focus on service quality. Additionally, future research should explore further diversification opportunities and the impact of emerging technologies on customer engagement and marketing strategies. This research provides a strategic framework for Resik Wangi Auto Detailing to navigate the competitive landscape, improve market positioning, and increase revenue through targeted marketing and service enhancements.