2004 Subaru WRX Impreza: The Ultimate Buyer's Guide

The 2004 Subaru WRX Impreza stands as a legendary icon in the performance car world, continuing to offer an exhilarating blend of rally-bred performance and daily drivability. Often affectionately dubbed the "Blobeye" due to its distinctive headlight design, the 2004 Subaru WRX Impreza provides an unparalleled driving experience, especially for enthusiasts seeking symmetrical all-wheel drive, turbocharged power, and a rich motorsport heritage. Whether you're a first-time buyer or a long-time enthusiast, understanding the nuances of this specific model year is crucial for making an informed decision and ensuring long-term enjoyment.

Why the "Blobeye" 2004 WRX Still Captivates Enthusiasts

The 2004 Subaru WRX Impreza holds a special place in the hearts of automotive enthusiasts worldwide. Its unique blend of aggressive styling, robust performance, and proven rally pedigree makes it a standout choice, even nearly two decades after its initial release. Many continue to seek out this specific model for its character and modifiability.

Rally Heritage and AWD Prowess

Subaru's commitment to rally racing is deeply ingrained in the DNA of every WRX, and the 2004 model is no exception. This vehicle boasts Subaru's renowned Symmetrical All-Wheel Drive system, offering superior traction and handling in diverse conditions. This system provides a unique driving feel, making the car incredibly capable on various surfaces, from winding backroads to snowy commutes.

Our experience shows that the consistent grip and predictable handling characteristics are major drawcards for drivers who appreciate confidence behind the wheel. The immediate response to throttle inputs, combined with the power delivery to all four wheels, creates an engaging and connected driving experience that few other vehicles can match at its price point.

Performance Specifications and Driving Dynamics

Under the hood, the 2004 Subaru WRX Impreza is powered by a 2.0-liter turbocharged EJ205 flat-four engine, producing 227 horsepower and 217 lb-ft of torque. Mated to a crisp five-speed manual transmission, this powertrain delivers robust acceleration and a thrilling exhaust note. The flat-four configuration contributes to a lower center of gravity, enhancing the car's dynamic stability.

In our testing, the car’s ability to put power down effectively, even out of tight corners, is remarkable. The turbo spools up quickly, providing a surge of power that keeps the drive exciting. While not as powerful as its STI sibling, the standard WRX still offers a potent package perfect for spirited driving and daily commuting alike. It strikes a balance between raw power and manageable road manners.

Iconic Design: The "Blobeye" Aesthetic

The 2004 model year is famously characterized by its distinct "Blobeye" headlights, a design choice that sets it apart from the earlier "Bugeye" (2002-2003) and later "Hawkeye" (2006-2007) iterations. This aesthetic has garnered a cult following, with many enthusiasts considering it the most visually appealing of the second-generation Impreza WRX models.

The large, rounded headlights give the car a unique, aggressive front fascia. This design choice, combined with the iconic hood scoop and flared fenders, solidifies its presence. The "Blobeye" look exudes a raw, purposeful appeal that perfectly encapsulates its rally car spirit, making it instantly recognizable and highly desirable among collectors and tuners.

What to Look For When Buying a Used 2004 WRX

Acquiring a used 2004 Subaru WRX Impreza can be an exciting endeavor, but it requires careful scrutiny. These cars are often driven hard and can have a history of modifications. A thorough inspection is paramount to avoid potential headaches and costly repairs down the line.

Pre-Purchase Inspection Essentials

Before finalizing any purchase, a comprehensive pre-purchase inspection (PPI) by a reputable Subaru specialist is highly recommended. This goes beyond a simple visual check and involves a deep dive into the vehicle's mechanical health. A professional can identify issues that might not be apparent to the untrained eye, leveraging their expertise with these specific platforms.

During a PPI, the mechanic will typically check the engine compression, inspect for oil leaks, assess the condition of the turbocharger, and examine the suspension components. Our analysis consistently shows that a good PPI saves buyers thousands in potential future repairs, providing invaluable peace of mind. Never skip this critical step, especially on a performance-oriented vehicle of this age.

Key Areas of Mechanical Concern (Engine, Transmission, Drivetrain)

When inspecting the 2004 WRX, pay close attention to the engine, transmission, and drivetrain. The EJ205 engine, while robust, can suffer from specific issues such as ringland failure, especially if the car has been improperly tuned or run with low-quality fuel. Listen for knocking noises, check for excessive smoke from the exhaust, and review service records for consistent oil changes using appropriate synthetic oil.

For the transmission, feel for smooth shifts and ensure there's no grinding, particularly in 3rd gear, which can be a known weak point. The clutch should engage smoothly without slipping or excessive chatter. The Symmetrical All-Wheel Drive system's components, including the differentials and CV axles, should also be inspected for leaks or play. Any clunking noises during turns or acceleration could indicate drivetrain wear. According to common community consensus on enthusiast forums, these are critical areas for longevity.

Rust and Bodywork Checks

Rust can be a significant issue for older vehicles, particularly in regions with harsh winters or coastal environments. Carefully inspect the wheel wells, rocker panels, subframes, and around the rear fenders for any signs of corrosion. The unibody construction means that structural rust can be very serious and expensive to repair, compromising safety and integrity.

Examine the body panels for inconsistencies in paint color or texture, which could indicate previous accident damage and poorly executed repairs. Check panel gaps to ensure they are uniform. While minor cosmetic flaws are expected on a car of this age, major discrepancies should raise red flags and prompt further investigation into the vehicle's history via a VIN check or accident report.

Assessing Modifications and Aftermarket Parts

Many 2004 WRX models have been modified by previous owners. While some modifications can enhance performance, others can negatively impact reliability or void warranties if still applicable. Always inquire about the nature and quality of any aftermarket parts installed. Poorly installed or cheap components can lead to a cascade of mechanical failures.

It's crucial to ascertain if engine tuning was professionally performed by a reputable tuner. An improper tune can significantly reduce engine lifespan. Look for stock components that have been replaced, such as the air intake, exhaust, turbocharger, or suspension. Heavily modified cars often carry increased risk and may require more specialized maintenance. Our advice is generally to favor cars with minimal or well-documented, professionally installed modifications.

Common Issues and Known Weaknesses of the 2004 WRX

Even with its impressive reputation, the 2004 Subaru WRX Impreza is not without its common issues. Being aware of these potential weaknesses can help prospective owners budget for maintenance and address problems proactively, ensuring the car remains a reliable performer.

Engine Reliability: The EJ205 and Its Quirks

The EJ205 engine is a robust powerplant, but it has specific vulnerabilities. One of the most talked-about is potential piston ringland failure, often exacerbated by aggressive tuning, consistent detonation, or oil starvation. Symptoms can include increased oil consumption, smoke from the exhaust, and loss of compression. A compression and leak-down test during a PPI can help diagnose this.

Another common issue is oil leaks, particularly from the valve covers, cam seals, and the oil separator plate at the back of the engine. While not always critical, these leaks can accumulate and require attention. Maintaining proper oil levels and using the correct oil viscosity are paramount for the longevity of the EJ205. Our experience indicates that diligent maintenance is the single most important factor in preventing premature engine wear.

Transmission and Clutch Considerations

The five-speed manual transmission in the 2004 WRX is generally durable, but it can be susceptible to wear, especially if subjected to hard driving or power-increasing modifications without reinforcing the gearbox. The synchronizers, particularly for third gear, can wear out, leading to grinding during shifts. This is a widely acknowledged characteristic within the WRX community.

Clutch wear is another area to monitor. A heavily modified car or one that has been launch-controlled frequently will likely have a worn clutch. Symptoms include slipping under acceleration or a very high engagement point. Replacement costs can be substantial, so factoring this into your budget is wise. Upgraded clutches are available but can alter driving feel.

Suspension and Steering Wear Points

Given the performance-oriented nature of the WRX, suspension components can experience accelerated wear. Common items to check include: worn bushings (control arm, sway bar), failing ball joints, and leaky struts. These issues can lead to vague steering, clunking noises over bumps, and reduced handling performance. Subaru's original service manuals emphasize regular inspection of these components.

The steering rack can also develop play over time, leading to a loose feeling in the steering wheel. While not a safety critical failure in its early stages, it detracts from the precise handling the WRX is known for. Addressing these suspension and steering components proactively will maintain the car's intended driving dynamics and provide a more enjoyable experience.

Electrical System and Sensor Faults

Like many vehicles of its era, the 2004 WRX can exhibit minor electrical gremlins. Common culprits include failing oxygen sensors, which can trigger check engine lights and affect fuel economy. Mass Airflow (MAF) sensors can also become dirty or faulty, leading to rough idling or hesitant acceleration. These sensors are vital for proper engine management.

Less common but still possible are issues with the instrument cluster lights or power window motors. While often minor, electrical problems can sometimes be elusive to diagnose. When considering a purchase, ensure all dashboard warning lights illuminate and then extinguish as expected. A persistent check engine light, without a clear explanation, should always be investigated.

Enhancing Your 2004 WRX: Performance Upgrades and Customization

One of the most appealing aspects of the 2004 Subaru WRX Impreza is its vast aftermarket support and potential for customization. From mild performance boosts to full-blown track builds, the platform offers endless possibilities for owners looking to personalize their vehicle and extract more power or refine handling.

Power Modifications: Intake, Exhaust, and Tuning

For those seeking more power, common first steps include upgrading the intake and exhaust systems. A performance intake can improve airflow, while a cat-back exhaust system can free up horsepower and provide a more aggressive sound. It's crucial to remember that any significant change to intake or exhaust components typically requires a professional engine tune (ECU reflash) to prevent engine damage.

Without proper tuning, the engine's air-fuel ratios can be thrown off, leading to detonation or a lean condition. Many experienced tuners can safely extract more power from the EJ205, often reaching 250-300 horsepower with supporting modifications. However, our analysis shows that pushing these engines beyond certain limits significantly reduces their longevity. Always prioritize a conservative, safe tune from a reputable professional over chasing peak numbers.

Suspension and Braking System Improvements

While the stock suspension of the 2004 WRX is capable, it can be significantly improved for more aggressive driving. Upgrading to coilovers or a more performance-oriented strut and spring combination can dramatically enhance handling, reduce body roll, and allow for ride height adjustment. Swapping out worn bushings for stiffer polyurethane alternatives also sharpens steering response.

Braking is another area where improvements yield substantial benefits. Upgrading to performance brake pads, steel-braided lines, and larger rotors can significantly reduce stopping distances and improve fade resistance during hard use. For serious track enthusiasts, a full big brake kit (BBK) can be a worthwhile investment. These upgrades not only improve performance but also contribute to driver confidence and safety, especially when driving spiritedly. — Bulls Vs. Suns: Epic Stats Showdown

Interior and Exterior Aesthetic Enhancements

Customization isn't limited to performance. Many owners personalize their 2004 WRX with aesthetic upgrades. On the exterior, popular modifications include STI-style spoilers, front lips, side skirts, and lightweight aftermarket wheels. Upgrading lighting, such as LED conversions or custom headlights, can modernize the look.

Inside, enhancements often include shifter bushings for a tighter feel, aftermarket steering wheels, performance seats, or audio system upgrades. These modifications allow owners to infuse their personality into the car while improving the driving experience. However, when buying, assess the quality of these modifications; poorly installed aesthetic parts can detract from the car's appeal and value. A tasteful balance of personal touches often yields the best results. — IU Vs. Penn State Football: Game Analysis

Essential Maintenance and Longevity Tips

Owning a 2004 Subaru WRX Impreza means committing to diligent maintenance. These performance vehicles require more attention than a typical economy car, but with proper care, they can provide years of reliable enjoyment. Proactive maintenance is key to unlocking the full potential and longevity of your "Blobeye."

Regular Oil Changes and Fluid Checks

Perhaps the most critical maintenance item for any turbocharged engine, especially the EJ205, is frequent and proper oil changes. Subaru recommends synthetic oil for the WRX, and many enthusiasts opt for even shorter intervals than factory recommendations, typically every 3,000-3,750 miles or 3-4 months. Turbochargers put immense stress on engine oil, so high-quality synthetic is non-negotiable.

Regularly check oil levels between changes, as some oil consumption is normal, particularly in older or higher-mileage engines. Also, monitor and maintain other fluids, including coolant, power steering fluid, and brake fluid. For manual transmissions and differentials, periodic fluid changes (every 30,000-60,000 miles) with the correct specification fluid are essential for drivetrain health. Consistent fluid health directly correlates with component lifespan.

Timing Belt and Water Pump Service

The 2004 WRX's EJ205 engine uses a timing belt, which is a critical maintenance item. Unlike timing chains, belts require periodic replacement to prevent catastrophic engine failure if they break. Subaru recommends replacing the timing belt, along with the water pump, tensioner, and idler pulleys, every 105,000 miles or 105 months, whichever comes first. This is not a service to defer.

This service can be expensive due to the labor involved and the cost of parts, but it is absolutely essential. Our expert analysis indicates that ignoring the timing belt replacement interval is one of the quickest ways to destroy the engine. Always verify if this service has been performed when buying a used WRX, and ensure it's documented with quality parts.

Spark Plugs, Coils, and Fuel System Maintenance

Regular replacement of spark plugs is vital for proper combustion and engine efficiency. For the 2004 WRX, this typically occurs every 60,000 miles. Using the correct OEM or equivalent performance spark plugs is important. While less common, ignition coil packs can also fail, leading to misfires and rough running. Symptoms include engine hesitation, loss of power, and a flashing check engine light.

Maintaining the fuel system also contributes to longevity. This includes periodically replacing the fuel filter (if external) and using quality fuel. While modern fuels contain detergents, a periodic fuel system cleaner can also be beneficial. Ensuring the fuel system delivers clean, consistent fuel flow is crucial for the health of the injectors and overall engine performance. A clean fuel system directly impacts efficient and reliable power delivery.

Rust Prevention and Body Care

To preserve the body and chassis of your 2004 WRX, especially in regions prone to rust, active prevention is necessary. Regularly washing the car, particularly the undercarriage, to remove road salt and grime is important. Applying undercoating or rust-proofing treatments can offer significant long-term protection. Addressing any paint chips or scratches promptly prevents rust from taking hold.

Furthermore, inspecting drain plugs and body seams for blockages can prevent water from accumulating and causing hidden corrosion. Keeping the interior clean and dry also prevents mold and odors. A well-maintained exterior not only looks better but also helps retain the vehicle's value. Proactive body care is often overlooked but plays a crucial role in overall longevity, as observed in cars kept in harsh climates.

FAQ Section

Is the 2004 WRX a reliable car?

Yes, the 2004 Subaru WRX Impreza can be a reliable car if properly maintained. Its reliability is heavily dependent on how it was driven and cared for by previous owners. The EJ205 engine is robust but requires diligent oil changes, quality fuel, and timely maintenance to avoid common issues like piston ringland failure. Heavily modified cars may have compromised reliability.

What are the main differences between a 2004 WRX and STI?

The 2004 WRX and STI share the same "Blobeye" body style, but the STI is a higher-performance variant. Key differences include the STI's larger 2.5-liter EJ257 engine (300 hp), a stronger 6-speed manual transmission, driver-controlled center differential (DCCD), Brembo brakes, stronger drivetrain components, and more aggressive suspension tuning. The WRX features a 2.0-liter EJ205 engine (227 hp) and a 5-speed manual transmission.

How much horsepower does a stock 2004 WRX have?

A stock 2004 Subaru WRX Impreza equipped with the 2.0-liter turbocharged EJ205 flat-four engine produces 227 horsepower and 217 lb-ft of torque. These figures are at the crankshaft, and wheel horsepower will be lower due to drivetrain loss. The power delivery is spirited and engaging, especially given the car's relatively light weight and all-wheel-drive traction.

What is the lifespan of a 2004 WRX engine?

The lifespan of a 2004 WRX engine (EJ205) varies significantly. With meticulous maintenance, conservative driving, and no aggressive modifications, many can exceed 150,000-200,000 miles. However, engines that have been abused, improperly tuned, or neglected can fail much earlier, sometimes below 100,000 miles. Timely oil changes and proper cooling system maintenance are crucial for longevity.

Are parts for a 2004 WRX still available?

Yes, parts for the 2004 Subaru WRX Impreza are generally still widely available. Many OEM parts can be sourced through Subaru dealerships or online parts retailers. The vast aftermarket support for the WRX platform also means a wide selection of performance, replacement, and aesthetic parts are readily accessible, making ownership and customization relatively easy. — Ricketts Glen State Park Weather Forecast & Conditions

What makes the "blobeye" WRX special?

The "Blobeye" (2004-2005) WRX is special primarily for its distinctive headlight design, which sets it apart from other Impreza generations. It's also celebrated for its refined driving dynamics compared to the earlier "Bugeye" and its strong rally heritage. The 2004 model strikes a balance of raw performance and a unique aesthetic, making it a highly sought-after collector's item and tuner platform.

Conclusion

The 2004 Subaru WRX Impreza remains a truly exceptional vehicle, offering a captivating blend of performance, practicality, and enduring appeal. Its rally-bred heritage, distinctive "Blobeye" styling, and exhilarating turbocharged all-wheel-drive experience continue to draw a dedicated following. While owning a performance car of this age comes with its responsibilities, the rewards—in terms of driving enjoyment and community—are substantial.

By prioritizing a thorough pre-purchase inspection, understanding its common quirks, and committing to diligent maintenance, you can ensure your 2004 WRX provides many years of thrilling adventures. Whether you're looking for a spirited daily driver or a platform for customization, the "Blobeye" WRX is a choice that consistently delivers. Embrace the legacy and hit the road with confidence. Your journey with this iconic Subaru begins now.

Remember to consult a qualified Subaru technician for any major repairs or modifications to ensure optimal performance and safety.