2017 Subaru WRX Turbo Engine Problems: Complete Guide

The 2017 Subaru WRX, equipped with the FA20DIT turbocharged engine, can develop serious engine problems that require immediate attention. If you're experiencing white smoke from your exhaust, poor engine performance, or complete loss of power, your WRX may be suffering from critical turbo engine issues. These problems can range from blown head gaskets to complete turbocharger failure, and continuing to drive can result in catastrophic engine damage.

Recognizing the Warning Signs

When your 2017 WRX develops turbo engine problems, several unmistakable symptoms will appear:

• Thick white smoke from exhaust: This indicates coolant entering the combustion chambers, a serious sign of internal engine damage
• Severe loss of power: Your WRX will feel sluggish and may struggle to accelerate normally
• Complete boost loss: The turbo may stop providing any boost pressure, making acceleration extremely poor
• Engine overheating: Temperature gauge climbing rapidly or coolant loss without visible external leaks
• Rough idle or misfiring: Engine may run unevenly or shake at idle
• Sweet smell from exhaust: Burning coolant produces a distinctive sweet odor
• Coolant consumption: Frequent need to add coolant despite no visible leaks

Common Causes of 2017 WRX Turbo Engine Problems

Blown Head Gasket (Most Likely Cause)

Head gasket failure is extremely common in the 2017 WRX's FA20DIT engine, especially when subjected to aggressive driving or modifications. The head gasket seals the cylinder head to the engine block, and when it fails, coolant can enter the combustion chambers. This creates the characteristic white smoke and causes severe performance issues. Turbocharged engines are particularly susceptible due to higher operating pressures and temperatures.

Turbocharger Failure

The turbocharger in the 2017 WRX is known for premature failure, particularly in vehicles that haven't received proper maintenance. Turbo seal failure allows oil and coolant to enter the intake system, causing white smoke and complete loss of boost pressure. The FA20DIT engine's turbo is especially sensitive to oil quality and change intervals.

Cracked Engine Block

While less common than head gasket failure, a cracked engine block can cause similar symptoms. Internal cracks allow coolant to leak into combustion chambers or oil passages. This is often the result of severe overheating damage and represents a more serious problem than head gasket failure.

Intercooler System Leaks

The WRX's intercooler system operates under high pressure, and leaks can develop in the intercooler core or connecting pipes. When pressurized coolant leaks into the intake system, it can create white smoke and cause boost pressure loss. While less catastrophic than other causes, this still requires immediate attention.

Intake Manifold Gasket Failure

Though less likely given the severity of symptoms, intake manifold gasket failure can allow coolant to enter the intake system. This typically causes less dramatic symptoms but can still result in white smoke and poor performance.

Professional Diagnosis Required

Diagnosing turbo engine problems in your 2017 WRX requires professional equipment and expertise. A qualified technician will perform:

• Compression test: Measures cylinder compression to identify internal engine damage
• Cooling system pressure test: Identifies leaks in the cooling system
• Turbo boost pressure test: Determines if the turbocharger is functioning properly
• Combustion leak test: Detects combustion gases in the cooling system
• Visual inspection: Examines turbo components, intercooler, and engine bay for obvious damage

These diagnostic procedures will pinpoint the exact cause of your engine problems and determine the appropriate repair strategy.

Repair Options and Approach

Professional Repair Only

Due to the complexity and severity of turbo engine problems in the 2017 WRX, professional repair is absolutely necessary. These repairs require:

• Engine disassembly and specialized tools
• Precise torque specifications and procedures
• Quality replacement parts designed for turbocharged applications
• Proper break-in procedures after repair

Typical Repair Procedures

Head Gasket Replacement: Involves removing the cylinder head, replacing gaskets, and often requires machine work to ensure proper sealing surfaces.

Turbocharger Replacement: Complete turbo replacement with new or remanufactured unit, including all associated seals and gaskets.

Engine Block Repair: May require complete engine replacement or extensive machine work, depending on crack severity.

Cost Breakdown

Repair costs for 2017 WRX turbo engine problems typically range from $2,000 to $3,500, depending on the specific issue:

• Head gasket replacement: $2,000 - $2,800
• Turbocharger replacement: $2,200 - $3,200
• Engine block repair/replacement: $3,000 - $5,000+
• Intercooler system repair: $800 - $1,500

These estimates include parts and labor but can vary based on your location and chosen repair facility. Additional costs may include towing, diagnostic fees, and related component replacement.

Prevention Strategies

While some engine problems are unavoidable, you can reduce the risk of turbo engine issues in your WRX:

• Follow strict maintenance schedules: Change oil every 3,000-5,000 miles with high-quality synthetic oil
• Allow proper warm-up: Let the engine warm up before aggressive driving
• Cool-down period: Allow the turbo to cool before shutting off the engine
• Monitor coolant levels: Check coolant regularly and address leaks immediately
• Avoid aggressive modifications: Maintain stock boost levels to reduce stress on engine components
• Address overheating immediately: Never ignore temperature warning lights

Critical Safety Warning

Do not continue driving your 2017 WRX if you suspect turbo engine problems. Continuing to operate the vehicle can result in:

• Complete engine seizure and destruction
• Rapid overheating leading to fire hazard
• Loss of power creating dangerous driving conditions
• Exponentially higher repair costs

Have your vehicle towed to a qualified repair facility immediately. The cost of towing is minimal compared to the potential for complete engine replacement.