The 2004 Lexus IS is a compact luxury sport sedan designed to blend sharp handling with Lexus-level comfort and refinement. It’s ideal for drivers who want a smaller, driver-focused sedan with a premium interior and strong long-term durability compared to many European rivals of the same era. The 2004 model year sits in the first-generation IS lineup (often referred to as the XE10), which helped establish the IS as Lexus’s sport-sedan alternative to the BMW 3 Series. In today’s market, it’s a popular used buy for commuters and enthusiasts who want an upscale, reliable daily driver with a sporty edge.

1) Engine options: The 2004 Lexus IS was offered as the IS 300 with a 3.0L inline-6 (2JZ-GE) making around 215 hp, paired with either a 5-speed manual or 5-speed automatic, depending on configuration. In many markets the IS 200 was also available with a 2.0L inline-6 (1G-FE) at roughly 153 hp, typically paired with a manual or automatic. 2) Rear-wheel-drive dynamics: A rear-wheel-drive platform (with sport-tuned suspension) gives the 2004 IS a balanced feel in corners and a more engaging driving character than many front-wheel-drive luxury sedans. 3) Premium cabin features: Common equipment includes power front seats, available leather upholstery, automatic climate control, and a high-quality audio system, all contributing to the IS’s upscale positioning. 4) Strong safety fundamentals: Many vehicles were equipped with front and side airbags, ABS, and stability/traction systems depending on trim and market, helping make it a solid choice for daily use. 5) Build quality: Tight panel gaps, durable switchgear, and generally long-lasting interior materials are standout traits that still show well on clean, well-kept examples.

Shoppers researching “2004 Lexus IS reliability” will find that overall dependability is a strong point, but age-related wear is common. Here are several “2004 Lexus IS problems” and “2004 Lexus IS common issues” reported by owners and technicians: 1) Automatic transmission behavior (IS 300): Some owners report harsh or delayed shifts, especially on higher-mileage cars (often 120,000+ miles). Causes can include degraded transmission fluid, solenoid wear, or neglected service history. Many units run a long time, but poor maintenance can make symptoms show up sooner. 2) Oil leaks and seepage: Valve cover gasket seepage is common on older inline-6 engines, sometimes appearing around 100,000–150,000 miles. It may show up as a burning-oil smell near the engine bay or oil residue on the engine exterior. 3) Suspension and steering wear: Expect wear items like front lower ball joints, control arm bushings, and tie rod ends to loosen with age. Owners often notice clunks over bumps, vague steering, or uneven tire wear around 100,000+ miles depending on road conditions. 4) Brake wear and vibration: Warped rotors (often felt as steering wheel shake under braking) and faster front brake wear are commonly mentioned, particularly if the car has seen aggressive driving or lower-quality replacement parts.