2007 Subaru Impreza

2007 Subaru Impreza

Overview

The 2007 Subaru Impreza, a popular compact car, offered a range of engine and drivetrain options, including naturally aspirated and turbocharged Boxer engines, paired with manual or automatic transmissions. Known for its all-wheel-drive system, it appealed to drivers seeking capable performance in various conditions. While generally considered reliable, certain model years and specific configurations can exhibit common issues that owners should be aware of. This analysis focuses on documented technical reliability concerns beyond routine maintenance, providing insights into potential problem areas for the 2007 model year.

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Engine

2.5L EJ253 (Naturally Aspirated)

Head Gasket Failure

• Symptoms: Coolant loss, white smoke from exhaust, overheating, milky oil.
• Solution: Replacement of head gaskets and associated components.
• Cost: $1500 - $3000

2.5L EJ255 (Turbocharged - WRX)

Piston Ring Land Failure

• Symptoms: Excessive oil consumption, blue smoke from exhaust, loss of power, knocking sounds.
• Solution: Engine rebuild or replacement, often with forged pistons.
• Cost: $3000 - $7000+

Turbocharger Failure

• Symptoms: Loss of boost, whining noises, smoke from exhaust, oil leaks.
• Solution: Turbocharger replacement or rebuild.
• Cost: $1000 - $2500

2.5L EJ257 (Turbocharged - STI)

Piston Ring Land Failure

• Symptoms: Excessive oil consumption, blue smoke from exhaust, loss of power, knocking sounds.
• Solution: Engine rebuild or replacement, often with forged pistons.
• Cost: $3000 - $7000+

Connecting Rod Bearing Failure

• Symptoms: Knocking or rattling noises from the engine, loss of oil pressure.
• Solution: Engine rebuild or replacement.
• Cost: $3000 - $7000+

Transmission

5-Speed Manual

Clutch Wear

• Symptoms: Slipping clutch, difficulty shifting gears, burning smell.
• Solution: Clutch replacement (clutch kit).
• Cost: $700 - $1500

4-Speed Automatic

Torque Converter Issues

• Symptoms: Shuddering, slipping, delayed engagement, overheating.
• Solution: Torque converter replacement or transmission service.
• Cost: $800 - $1800

6-Speed Manual (STI)

Gear Grinding / Shifting Issues

• Symptoms: Difficulty engaging gears, grinding noises, especially in lower gears.
• Solution: Transmission inspection, fluid change, or rebuild/replacement.
• Cost: $1500 - $4000+

Suspension

Standard Chassis

Worn Sway Bar Links/Bushings

• Symptoms: Clunking or rattling noises over bumps, reduced handling stability.
• Solution: Replacement of sway bar links and/or bushings.
• Cost: $150 - $350

Electrical

Standard System

Alternator Failure

• Symptoms: Dimming lights, battery warning light, electrical system malfunctions, dead battery.
• Solution: Alternator replacement.
• Cost: $400 - $700

Exterior

Standard Body

Rust on Wheel Arches and Rocker Panels

• Symptoms: Visible rust and corrosion, especially in areas with harsh winters.
• Solution: Rust repair and repainting, rustproofing.
• Cost: $300 - $1000+

Interior

Standard Cabin

HVAC Blower Motor Failure

• Symptoms: No airflow from vents, or intermittent airflow.
• Solution: Replacement of the blower motor and resistor.
• Cost: $200 - $450

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Summary Verdict

The 2007 Subaru Impreza, particularly the WRX and STI models, can be prone to more significant engine issues like piston ring land failure and connecting rod bearing wear, often exacerbated by aggressive driving or inadequate maintenance. Naturally aspirated models are more susceptible to head gasket failures. Transmission issues, while not universal, can include clutch wear on manuals and torque converter problems on automatics. Suspension components like sway bar links can wear out, and electrical issues such as alternator failure are also reported. Rust can be a concern on the exterior, especially in colder climates. Overall, while offering engaging performance, potential buyers should be aware of these common reliability concerns and factor in potential repair costs.