2019 Subaru WRX STI

2019 Subaru WRX STI

Overview

The 2019 Subaru WRX STI is a performance-oriented sedan known for its engaging driving dynamics and rally-inspired heritage. It typically features a robust turbocharged Boxer engine and a sophisticated all-wheel-drive system. While generally considered reliable for its performance class, like any vehicle, it can experience specific issues. This report focuses on documented technical reliability concerns beyond routine maintenance, providing insights into potential problem areas for owners and enthusiasts.

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Engine

2.5L Turbocharged Boxer (EJ257)

Head Gasket Failure

• Symptoms: Coolant leaks, white smoke from exhaust, engine overheating, loss of power.
• Solution: Replacement of head gaskets and associated seals. May require cylinder head machining.
• Cost: $1,500 - $3,000

Piston Ring Land Failure

• Symptoms: Excessive oil consumption, blue smoke from exhaust, loss of compression, knocking sounds.
• Solution: Engine rebuild or replacement with forged pistons.
• Cost: $3,000 - $7,000+

Turbocharger Failure

• Symptoms: Loss of boost, whistling noises, smoke from exhaust, reduced engine power.
• Solution: Turbocharger replacement or rebuild.
• Cost: $1,000 - $2,500

Transmission

6-Speed Manual (TY85)

Clutch Wear

• Symptoms: Slipping clutch, difficulty shifting gears, burning smell.
• Solution: Clutch kit replacement (clutch disc, pressure plate, release bearing).
• Cost: $800 - $1,500

Synchro Wear

• Symptoms: Grinding when shifting into certain gears, difficulty engaging gears.
• Solution: Transmission disassembly and replacement of worn synchronizer rings.
• Cost: $1,200 - $2,500

Suspension

Performance Suspension

No widespread issues reported.

• Symptoms: N/A
• Solution: N/A
• Cost: Varies

Electrical

Standard Electrical System

No widespread issues reported.

• Symptoms: N/A
• Solution: N/A
• Cost: Varies

Exterior

Body and Trim

No widespread issues reported.

• Symptoms: N/A
• Solution: N/A
• Cost: Varies

Interior

Cabin Components

No widespread issues reported.

• Symptoms: N/A
• Solution: N/A
• Cost: Varies

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Summary Verdict

The 2019 Subaru WRX STI, while a capable performance vehicle, exhibits some potential reliability concerns primarily centered around its high-performance engine and manual transmission. The EJ257 engine, particularly under demanding use, can be susceptible to issues like head gasket failure, piston ring land damage, and turbocharger wear, which can be costly to repair. The 6-speed manual transmission, while robust, can experience wear on its clutch and synchronizers over time. Other systems like suspension, electrical, exterior, and interior components generally do not present widespread documented issues beyond normal wear and tear. Regular maintenance and mindful driving are crucial for mitigating potential problems.