The 2004 Nissan Altima is a midsize sedan from the third-generation Altima lineup (2002–2006), known for offering sporty road manners and strong performance for the class. It’s a great fit for commuters, small families, and drivers who want a roomier sedan with available V6 power without stepping up to a near-luxury price. In the early-2000s midsize market, it competed directly with the Honda Accord and Toyota Camry by emphasizing acceleration, interior space, and value. Buyers often search for 2004 Nissan Altima reliability and 2004 Nissan Altima problems because it can be a rewarding car when maintained well, but certain common issues are worth understanding up front.

1) Engine choices: Most 2004 Altima models came with a 2.5L inline-4 (commonly listed around 175 hp), while the available 3.5L V6 delivered noticeably stronger acceleration (commonly listed around 245 hp). 2) Transmissions: Many trims used an automatic transmission; a manual was available on some configurations, which some shoppers prefer for long-term durability and lower repair risk. 3) Roomy midsize packaging: The Altima is known for a spacious cabin for its era, with a comfortable driving position and good rear-seat space compared with several rivals. 4) Driving feel: Steering and handling are often described as more “sporty” than typical family sedans of the time, especially with the V6. 5) Features and trims: Depending on trim and options, you may find upgrades like alloy wheels, upgraded audio, and convenience features that helped it feel more premium than entry-level sedans.

When researching 2004 Nissan Altima common issues, the biggest theme is that the car can be dependable with consistent maintenance, but a few problems show up repeatedly in owner complaints and repair histories. 1) Catalytic converter failure and related codes: Some owners report a check engine light, loss of power, or failed emissions testing due to catalytic converter efficiency codes (often around 100,000–150,000 miles, though it can vary). This can be expensive, and it’s important to diagnose properly because other issues (like engine misfires or sensor problems) can damage a converter over time. 2) Engine oil consumption and valve cover leaks (2.5L more commonly discussed): Some 2.5L cars develop oil leaks from the valve cover gasket or begin consuming oil as mileage climbs (often past 100,000 miles). Low oil levels can lead to timing-chain noise or accelerated engine wear if not caught early. 3) Mass airflow sensor (MAF) and crank/cam sensor issues: Hesitation, stalling, hard starting, and intermittent check engine lights are sometimes tied to sensor failures. These problems may pop up in the 80,000–140,000-mile range and can feel like transmission issues until properly diagnosed. 4) Suspension and steering wear: With age and miles, front-end components like control arm bushings, struts, and sway bar links can wear, causing clunks over bumps, uneven tire wear, and looser handling (often noticeable after 100,000 miles). This is typical aging, but it’s a common point of repair on older Altimas.