The oil filter on a 2010 Chevy Malibu with a 4-cylinder engine is typically located on the
passenger side (right side) of the engine, near the front. It's often fairly accessible, but you might need to look under the car or use a wrench to reach it. It's usually a spin-on type filter.
Because the exact location can vary slightly depending on the specific engine and any modifications, it's best to consult your owner's manual for a diagram and specific instructions. The manual will give you the most accurate and reliable information.