How do you tune up a Nissan Cube?

To tune up a Nissan Cube, start by replacing the engine oil and oil filter to ensure proper lubrication. Check and replace the air filter for optimal airflow, and inspect the spark plugs, replacing them if they're worn. Additionally, examine the fuel filter and consider replacing it to maintain fuel system efficiency. Finally, check and top off all fluids, including coolant, brake fluid, and Transmission Fluid, ensuring everything is at the appropriate levels.