The 2011 Buick Regal is a mid-size sedan, representing a premium offering within Buick's lineup, known for its comfortable ride, refined styling, and quiet interior. This generation of the Regal, produced from 2010 to 2017, was manufactured in Oshawa, Ontario, Canada, and offered with engine options including a 2.4L Ecotec Direct Injection I4 and a more potent 2.0L Turbocharged Ecotec DI I4. Positioned to compete with vehicles like the Ford Fusion and Toyota Camry, the Regal emphasized a sportier, more personal luxury image. Key features included standard electronic stability control, anti-lock brakes, and a comprehensive suite of airbags, contributing to its strong safety ratings, often earning Top Safety Pick awards. This comprehensive Service and Repair Manual provides factory-level diagnostic and repair information for all aspects of the 2011 Buick Regal. It covers all models and all repairs A-Z, offering complete step-by-step instructions for maintenance, service, diagnosis, and repair across all vehicle systems. Detailed coverage includes engine mechanicals, drivetrain, brakes, steering, HVAC, electrical systems, and body components. The manual also includes diagnostic troubleshooting guides, scheduled maintenance procedures, and full overhaul procedures for major components, all presented with diagrams and illustrations to facilitate understanding for owners, mechanics, and technicians.