The maintenance costs of a Nissan Altima can vary depending on several factors.

Firstly, regular maintenance items like oil changes, air filter replacements, and tire rotations are necessary. The cost of an oil change typically ranges from around $50 to $100, depending on the type of oil used and the location. Air filter replacements can cost approximately $20 to $50. Tire rotations might cost between $20 and $40.

Secondly, major components such as the battery and brakes also require maintenance and possible replacement over time. A new battery can cost anywhere from $100 to $200. Brake pad replacements can range from $150 to $300 depending on the quality and type.

In addition, coolant flushes, engine flushes, and transmission fluid changes are important maintenance tasks. Coolant flushes might cost around $100 to $150. Engine flushes can be in the range of $150 to $250. Transmission fluid changes usually cost from $150 to $200.

Moreover, the cost of maintenance can also be influenced by the location and the mechanic or service center you choose. It's advisable to compare prices from different service providers and consider dealerships or trusted independent mechanics. Keeping up with regular maintenance can help prevent more expensive repairs down the road and ensure the longevity and performance of your Altima.