Driving a 2008 Subaru Impreza offers a blend of practicality, efficiency, and all-weather capability that remains appealing years after its launch. This specific model year represents a mature generation of the platform, benefiting from years of refinement while inheriting some of the complexities of its predecessors. Understanding the common Subaru 2008 Impreza problems is essential for current owners to ensure longevity and peace of mind.
Overview of the 2008 Model Year
The 2008 Subaru Impreza continued the brand's reputation for boxer engines and standard symmetrical all-wheel drive. By this year, the vehicle had settled into its role as a reliable daily driver and capable compact car. However, like any machine with hundreds of moving parts, specific systems require attention to prevent minor issues from becoming major repairs.
Engine and Transmission Concerns
The heart of the 2008 Impreza is the EJ254 or EJ255 boxer engine, known for its low center of gravity but also for specific vulnerabilities. While generally robust when maintained properly, these models can exhibit issues that owners should monitor closely.
Oil Consumption and Leaks
Some owners report higher than normal oil consumption, where the vehicle burns oil faster than expected between changes. This can lead to low oil levels and potential engine damage if not addressed promptly. Furthermore, valve cover gaskets and oil pan seals are common culprits for external oil leaks, leaving characteristic spots beneath the parked vehicle.
Timing Belt and Water Pump
The maintenance schedule for the timing belt is critical. Failure to replace it at the recommended intervals can result in catastrophic engine damage, as the belt can snap and bend valves. Additionally, the water pump, often driven by the timing belt, is a component that frequently fails around the same timeframe, leading to coolant leaks and engine overheating.
Drivetrain and All-Wheel Drive System
The symmetrical all-wheel drive system is a major selling point, but the components that manage power distribution are not immune to wear. The constant velocity (CV) joints, in particular, are subjected to significant stress.
CV joint wear is a prevalent issue, manifesting as a clicking or popping sound when turning.
Transmission mounts can break, causing excessive vibration in the cabin during acceleration.
The transfer case, responsible for splitting power between front and rear, may develop leaks or electronic sensor failures.
Interior and Electrical Quirks
Beyond the mechanics, the 2008 Impreza has its share of interior and electronic gremlins that can diminish the driving experience. These issues are often more annoying than dangerous but are important to note for potential buyers.
Infotainment and Wiring
The stereo system is notorious for headunit failure, where the radio simply stops working. A more pervasive problem lies in the main wiring harness, which runs along the driver’s side door jamb. This harness is prone to cracking and chafing, leading to intermittent failures of the dashboard lights, seatbelt chimes, and other critical electrical systems.
Building Quality
Interior panels may develop rattles and squeaks over time due to plastic fasteners weakening. Power window regulators are another fragile component; when they fail, the window may stop working entirely or fall into the door card.
Suspension and Brake Wear
The standard suspension on the 2008 Impreza provides a firm ride, but the components are subject to fatigue. Struts and shock absorbers tend to wear out faster than on some competitors, leading to a bouncy ride and uneven tire wear. Brake systems, while effective, may require frequent pad and rotor replacement, and some owners report issues with brake lines corroding due to road salt exposure.
