2004 Subaru Impreza Reliability ReportCommon Problems, Repair Costs & Expert Verdict
Sell your car for what it's worth.
Every receipt, every service, one signed PDF you hand the buyer. OSC is the paperwork trail your resale price depends on.
- OSC Transfer PDF — every receipt
- Snap-a-receipt AI log
- Fuel & mileage tracker
- Shareable buyer view link
Quick Facts · 2004 Subaru Impreza
- Has 8 NHTSA recalls on record — the most notable involves the air bags:frontal:passenger side:inflator module.
- Outscores the 2005 Subaru Impreza by 8 points — one of the stronger nearby years to consider.
- The system most likely to surface first: engine head gaskets (2.5l na) (major severity).
The 2004 Subaru Impreza at a glance
- Is the 2004 Subaru Impreza reliable?
- Autojunket rates the 2004 Subaru Impreza 78/100 (grade C+), categorized as moderate risk. A spirited AWD performer that offers compelling value, provided you’re prepared to address its well-known engine and rust vulnerabilities head-on.
- Should I buy a used 2004 Subaru Impreza?
- Autojunket recommends reading the full reliability report before buying a 2004 Subaru Impreza. The 2004 Subaru Impreza is a compelling choice for its robust AWD and engaging driving dynamics, making it a fantastic companion for snowy climates or spirited driving. However, the pervasive head gasket issues on the 2.5L naturally aspirated engine and the significant risk of chassis rust necessitate a highly cauti…
- Which Subaru Impreza years are the most reliable?
- Best model years to buy: For the GD chassis, 2006-2007 WRX/STI are generally considered more refined. For NA models, later 2005-2007 models might have slightly improved head gaskets but still warrant inspection.. Years to avoid: No specific years to outright avoid in this generation, but any 2.5L NA engine without documented head gasket replacement history should be approached with extreme caution. Pre-2000 models often have worse rust..
- What are the most common problems with the 2004 Subaru Impreza?
- The top failure points on the 2004 Subaru Impreza are Engine Head Gaskets (2.5L NA) (typically around 60,000-120,000 miles), Rust and Corrosion (typically around 70,000+ (environment dependent) miles), Suspension Components (typically around 50,000-100,000 miles). Autojunket's full report includes repair-cost ranges and inspection checklists for each.
- At what mileage do problems start on the 2004 Subaru Impreza?
- The first major mileage danger zone for the 2004 Subaru Impreza is around 30,000. Low Risk Zone — At this mileage, the vehicle should be in excellent mechanical condition, requiring only routine maintenance like oil changes, tire rotations, and cabin air filter replacements. This is an ideal time for an initial detailed inspection.
Every answer is generated from real repair, recall, and ownership data — full breakdown in the report.
Read the full free reportShould You Buy the 2004 Subaru Impreza?
The 2004 Subaru Impreza is a fun-to-drive compact with exceptional all-wheel-drive capability, appealing to enthusiasts and those in challenging climates. However, pervasive head gasket issues on the 2.5L naturally aspirated engine and a high propensity for rust demand significant buyer vigilance and a dedicated maintenance budget. Proceed with caution, as neglect can lead to expensive, critical failures.
The 2004 Subaru Impreza is a compelling choice for its robust AWD and engaging driving dynamics, making it a fantastic companion for snowy climates or spirited driving. However, the pervasive head gasket issues on the 2.5L naturally aspirated engine and the significant risk of chassis rust necessitate a highly cauti…
Best Model Years
For the GD chassis, 2006-2007 WRX/STI are generally considered more refined. For NA models, later 2005-2007 models might have slightly improved head gaskets but still warrant inspection.
Years to Avoid
No specific years to outright avoid in this generation, but any 2.5L NA engine without documented head gasket replacement history should be approached with extreme caution. Pre-2000 models often have worse rust.
Biggest Strengths
- Excellent All-Wheel-Drive (AWD) capability
- Engaging driving dynamics and handling
- Robust manual transmissions (especially WRX)
Top Risk Areas
The systems that tend to fail first on the 2004 Subaru Impreza, with the typical mileage window when each becomes a concern. Detailed repair-cost ranges and exact what-to-check inspection notes are in the full report.
The naturally aspirated 2.5L SOHC engine is notorious for external and internal head gasket leaks, leading to coolant loss, oil contamination, overheating, and potential catastrophic engine failure. This is often due to inferior original…
The chassis is highly susceptible to rust, particularly in salt-belt regions. Common areas include rear wheel arches, rocker panels, subframes, brake lines, fuel lines, and strut towers. This can compromise structural integrity and safety.
Wear items like wheel bearings, control arm bushings, and strut mounts tend to fail sooner than average due to the vehicle's weight and potentially spirited driving. Power steering pump leaks are also common.
2004 Subaru Impreza Mileage Danger Zones
The mileage windows when the 2004 Subaru Impreza most commonly needs attention. Plan ahead, budget accordingly, and inspect before you cross each threshold.
Low Risk Zone
At this mileage, the vehicle should be in excellent mechanical condition, requiring only routine maintenance like oil changes, tire rotations, and cabin air filter replacements. This is an ideal time for an initial detailed inspection.
Maintenance Zone
This mileage often triggers major service intervals including spark plugs, differential fluids, and a more thorough inspection of wear items. For 2.5L NA engines, vigilance for early head gasket weepage begins.
Elevated Risk Zone
This is a critical interval for the 2.5L NA engine as the timing belt and water pump are due, and head gasket failures become highly prevalent. Suspension components and power steering systems also show significant wear.
High Risk Zone
Beyond this point, the likelihood of major engine work (especially head gaskets if not already done) dramatically increases. Rust issues can become severe, impacting safety components, and transmission wear in automatic models may surface.
2004 Subaru Impreza Ownership Cost Outlook
What it typically costs to keep the 2004 Subaru Impreza on the road. Full 5-year cost-of-ownership projection and major-failure-risk forecast are in the report.
Annual Maintenance
$400-600
Moderate Repairs
$500-1,500 occasionally
How Long Does the 2004 Subaru Impreza Last?
Higher mileage examples (100k+) can still be good buys if there's solid documentation of head gasket replacement, timing belt service, and diligent rust prevention or repair. For any mileage, a pre-purchase inspection is non-negotiable.
What 2004 Subaru Impreza Owners Actually Say
What Owners Love
- Exceptional all-weather capability and grip from AWD
- Engaging and fun-to-drive handling characteristics
- Strong sense of community and plentiful aftermarket support
- Distinctive styling and rally heritage appeal
Common Frustrations
- Relatively poor fuel economy for its class
- Noticeable road noise at highway speeds
- Dated interior quality and materials showing wear
- High potential for expensive engine and rust repairs
Who Should Buy the 2004 Subaru Impreza?
Best For
- Enthusiasts who appreciate a spirited driving experience and rally heritage
- Drivers in snowy or challenging weather climates needing reliable AWD
- Individuals willing to perform DIY maintenance or invest in professional Subaru-specific service
Not Ideal For
- Budget-constrained buyers without a repair fund
- Individuals seeking absolute 'set it and forget it' reliability (like a Corolla)
How the 2004 Subaru Impreza Compares to Rivals
The Impreza carves out a unique niche with its standard AWD and rally-inspired performance. While not as bulletproof as some Japanese rivals in terms of engine longevity, its driving experience and capability in adverse weather are unmatched in its class.
More Reliable Than
- 2004 Volkswagen Jetta (complex electrical, higher maintenance)
- 2004 Ford Focus (less engaging drive, inferior AWD)
- 2004 Mitsubishi Lancer (less refined, less robust AWD)
Comparable To
- 2004 Mazda 3 (similar driving dynamics, but FWD biased)
- 2004 Nissan Sentra SE-R (sporty, but FWD, less rugged)
NHTSA Recalls
8 recalls on record from NHTSA. Check your VIN atnhtsa.gov to see if the repair was performed.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE
Subaru of America, Inc. (Subaru) is recalling certain 2009-2013 Forester, 2003-2006 Baja, 2004-2011 Impreza, 2004-2014 WRX (including STI), 2003-2014 Legacy and Outback, and 2006 Saab 9-2X vehicles originally sold, or ever registered, in the states of Arizona, Arkansas, Delaware, District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, and West Virginia or "Zone B." These vehicles had their passenger frontal air bag inflators previously replaced under a prior recall using inflators of the same design. The inflators may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, temperature and temperature cycling.
AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE
Subaru of America, Inc. (Subaru) is recalling certain 2009-2013 Forester, 2003-2006 Baja, 2004-2011 Impreza, 2004-2014 WRX (including STI), 2003-2014 Legacy and Outback, and 2005-2006 Saab 9-2X vehicles originally sold, or ever registered, in the states of Alaska, Colorado, Connecticut, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New York, North Dakota, Oregon, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin, and Wyoming or "Zone C." These vehicles had their passenger frontal air bag inflators previously replaced under a prior recall using inflators of the same design. The inflators may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, temperature and temperature cycling.
What breaks on the 2004 Subaru Impreza?
Full reliability breakdown — engine, transmission, rust, electrical. With repair costs and mileage danger zones.
Autojunket OSC · OSC Transfer
Sell your 2004 Subaru Impreza for what it's actually worth.
Log every service. Sell with a signed PDF. Every receipt, mileage-verified, in the buyer's hands.
Subaru Impreza by Year
Compare AutoScores across nearby years of the Subaru Impreza. Click any year for its full report.
If You're Considering This, Also Look At
Similar class, similar year range — ranked by AutoScore.
Relevant Products for Your 2004 Subaru Impreza
Parts and accessories matched to your 2004 Subaru Impreza
As an Amazon Associate I earn from qualifying purchases.
Where the 2004 Subaru Impreza report beats Carfax + CR
Carfax tells you if it crashed. Consumer Reports rates the whole nameplate. Autojunket tells you what will actually break on this specific year — and how to negotiate it.
Year-specific reliability score
Common problems + repair costs
Mileage danger zone map
AI negotiation script + walk-away price
Single report price
Frequently Asked Questions
Sell your 2004 Subaru Impreza for what it's actually worth.
Log every service on your Subaru Impreza. When it's time to sell, hand the buyer a signed PDF — every receipt, mileage-verified, close the deal at your price.
- OSC Transfer PDF — every receipt
- Snap-a-receipt AI log
- Fuel & mileage tracker
- Shareable buyer view link
Recommended Reading for the Subaru Impreza
Subaru Outback Common Problems and Repair Costs
Identify common Subaru Outback problems, understand their causes, and see average repair costs to make informed decisions for your vehicle's longevity.
Subaru Outback Years to Avoid (Worst to Best Ranked)
Avoid common pitfalls! Learn the worst Subaru Outback years and discover the most reliable models with our comprehensive worst-to-best rankings.
How Long Does a Subaru Outback Last? (Real Owner Data)
Uncover the real lifespan of a Subaru Outback! We use actual owner data to show exactly how many miles you can realistically expect from your vehicle.