The 2015 Regal represents the second generation of this model, produced on the GM Epsilon II platform. This premium mid-size sedan was engineered to blend European driving dynamics with American comfort, positioning it against competitors such as the Audi A4 and BMW 3 Series. It offered a range of potent engine options, including turbocharged four-cylinder and V6 direct injection powertrains, paired with either a six-speed automatic or an available manual transmission. Known for its upscale interior appointments and sophisticated European-inspired chassis and styling, the Regal aimed to appeal to consumers seeking a harmonious balance of performance, comfort, and luxury in their daily driving experience. This comprehensive Service and Repair Manual provides detailed, factory-level information essential for the maintenance and repair of the 2015 Regal. It covers all models and repairs from A to Z, encompassing every major vehicle system, including engine, drivetrain, brakes, steering, body, interior, and electrical systems. The manual offers step-by-step procedures, diagnostic guidance, component replacement instructions, and complete wiring schematics, all supported by high-resolution diagrams and illustrations. This resource is designed to empower owners, technicians, and mechanics with the knowledge needed to effectively maintain, troubleshoot, and repair the vehicle, ensuring its longevity and optimal performance.