2008 Subaru Impreza WRX STI (GRB): Review & Specs

The 2008 Subaru Impreza WRX STI (GRB) marks a significant turning point in the history of this iconic performance car. For years, the STI had been synonymous with rally-bred performance and a distinct, somewhat raw driving experience. However, with the introduction of the GRB generation, Subaru aimed to broaden the STI's appeal, blending its performance credentials with enhanced comfort and refinement. This article dives deep into the specifics of the 2008 Subaru Impreza WRX STI (GRB), exploring its engine, performance, handling, design, and overall driving experience. We'll also touch on its reliability and any potential issues to watch out for if you're considering picking one up today.

A New Era: The GRB's Design and Philosophy

The most immediate change with the GRB was its shift from a sedan to a hatchback body style. While a sedan version would eventually follow, the initial launch focused on the five-door configuration. This decision wasn't merely aesthetic; it was intended to improve practicality and appeal to a wider audience. The hatchback design offered increased cargo space and easier access, making the STI more usable for daily driving. Beyond the body style, the GRB also received a completely redesigned interior. Subaru aimed to address criticisms of previous generations by using higher-quality materials and improving the overall fit and finish. The seats were more supportive and comfortable, and the dashboard layout was more intuitive. These changes signaled Subaru's intention to create an STI that was not only fast but also a pleasant place to spend time.

The exterior design of the 2008 STI was also a departure from its predecessors. While it retained the signature aggressive styling cues, such as the large rear wing and hood scoop, the overall look was more modern and refined. The wider fenders and aggressive front fascia gave the car a muscular stance, hinting at its performance potential. However, some enthusiasts initially criticized the GRB for being less raw and more mainstream than previous generations. They felt that the changes had diluted the STI's character. Despite these criticisms, the GRB proved to be a sales success, attracting a new group of buyers who appreciated its blend of performance and practicality. This success demonstrated that Subaru's decision to broaden the STI's appeal was a sound one, ensuring the model's continued relevance in a competitive market.

Under the Hood: Engine and Performance

At the heart of the 2008 Subaru Impreza WRX STI (GRB) lies the legendary EJ257 engine. This turbocharged 2.5-liter four-cylinder boxer engine is a staple of Subaru performance, known for its punchy power delivery and distinctive rumble. In the GRB, the EJ257 produced 305 horsepower and 290 lb-ft of torque. While these figures were similar to the previous generation STI, Subaru made several improvements to the engine's internals and tuning to enhance its responsiveness and overall performance. The turbocharger was revised to provide quicker spool-up, reducing turbo lag and improving throttle response. The engine also featured a strengthened block and improved cooling system to handle the increased power output. These enhancements resulted in a more refined and usable power delivery, making the GRB STI more enjoyable to drive in a variety of conditions.

The GRB STI's performance figures were impressive for its time. It could accelerate from 0 to 60 mph in around 4.8 seconds and complete the quarter-mile in approximately 13.2 seconds. However, the numbers don't tell the whole story. The STI's real strength was its ability to deliver consistent and predictable performance in real-world driving situations. The symmetrical all-wheel-drive system provided excellent traction and stability, allowing the driver to confidently put the power down, even on slippery surfaces. The six-speed manual transmission was also a joy to use, with short, precise throws and well-spaced gear ratios. This combination of a powerful engine, advanced all-wheel-drive system, and engaging manual transmission made the GRB STI a truly rewarding car to drive.

Handling and Dynamics: A Driver's Car

The 2008 Subaru Impreza WRX STI (GRB) wasn't just about straight-line speed; it was also a formidable performer in the corners. Subaru engineers paid close attention to the car's handling and dynamics, making several improvements to the suspension and chassis. The GRB featured a stiffer chassis than its predecessor, providing a more stable and predictable platform for the suspension to work. The suspension itself was also revised, with stiffer springs, dampers, and anti-roll bars. These changes resulted in improved body control and reduced roll in corners. The GRB also featured Subaru's SI-Drive system, which allowed the driver to adjust the engine's throttle response and power delivery to suit different driving conditions.

One of the key features of the GRB STI was its Driver Controlled Center Differential (DCCD). This system allowed the driver to adjust the torque split between the front and rear wheels, giving them even more control over the car's handling. In its default setting, the DCCD provided a balanced torque split, offering a good compromise between stability and agility. However, the driver could also dial in more rear-wheel bias for increased oversteer or more front-wheel bias for improved traction. This level of adjustability made the GRB STI a truly versatile car, capable of handling a wide range of driving conditions and styles. Whether you were attacking a twisty mountain road or navigating a snow-covered parking lot, the GRB STI's handling and dynamics inspired confidence and control.

Interior and Features: A Step Up in Refinement

As mentioned earlier, the 2008 Subaru Impreza WRX STI (GRB) received a significantly improved interior compared to previous generations. The materials were of higher quality, the fit and finish were better, and the overall design was more modern and user-friendly. The seats were particularly noteworthy, offering excellent support and comfort, even on long drives. The dashboard layout was also more intuitive, with all the essential controls within easy reach. While the GRB's interior wasn't luxurious by any means, it was a significant step up from the Spartan cabins of previous STIs.

The GRB STI also came standard with a decent list of features, including automatic climate control, power windows and locks, and a premium audio system. Optional features included leather upholstery, a sunroof, and a navigation system. While the GRB's technology might seem a bit dated by today's standards, it was still quite respectable for its time. More importantly, the GRB's interior was functional and comfortable, making it a pleasant place to spend time, whether you were commuting to work or embarking on a weekend road trip. The improved interior was a key factor in the GRB's broader appeal, attracting buyers who wanted a performance car that was also comfortable and practical.

Reliability and Potential Issues

While the 2008 Subaru Impreza WRX STI (GRB) is a highly desirable car, it's important to be aware of its potential reliability issues before making a purchase. The EJ257 engine, while powerful and characterful, is known to be somewhat fragile, especially when subjected to excessive boost or poor maintenance. Common issues include head gasket failures, piston ring land failures, and connecting rod failures. These problems can be exacerbated by aftermarket modifications or aggressive driving. Therefore, it's crucial to thoroughly inspect any GRB STI before buying it, paying close attention to its maintenance history and overall condition.

Another potential issue with the GRB STI is its all-wheel-drive system. The DCCD can be prone to failure if not properly maintained, and the rear differential can also suffer from wear and tear. It's important to check for any unusual noises or vibrations from the drivetrain, as these could be signs of a problem. Finally, the GRB STI's suspension components can also wear out over time, especially if the car has been driven hard or used on rough roads. Be sure to inspect the shocks, struts, and bushings for any signs of damage or wear.

Is the 2008 Subaru Impreza WRX STI (GRB) Right for You?

The 2008 Subaru Impreza WRX STI (GRB) is a compelling choice for enthusiasts who want a high-performance car that's also practical and relatively affordable. Its powerful engine, advanced all-wheel-drive system, and engaging handling make it a blast to drive on both the street and the track. The GRB's improved interior and hatchback body style also make it more usable for daily driving than previous generations of the STI. However, it's important to be aware of the GRB's potential reliability issues and to thoroughly inspect any car before buying it. If you're willing to do your homework and take care of the car, the GRB STI can be a rewarding and enjoyable ownership experience.

Ultimately, the decision of whether or not to buy a 2008 Subaru Impreza WRX STI (GRB) comes down to your individual needs and preferences. If you're looking for a raw, unadulterated performance car, you might be better off with an older STI. However, if you want a car that blends performance with comfort and practicality, the GRB is definitely worth considering. Just be sure to do your research, get a thorough inspection, and be prepared to address any potential issues that may arise. With proper care and maintenance, the GRB STI can provide years of driving pleasure.