In this Kia K5 (Optima) category, you’ll find in-depth guides for every major generation and popular engine setup. Expect clear specs and dimensions, real-world performance and fuel economy, trim and option breakdowns, safety ratings and driver-assistance features, reliability and common issues, recalls and service actions, and practical maintenance schedules with fluids and intervals. Each article focuses on what to check, what to service, and what ownership is like day to day.