What To Know
- While both the WRX and STI offer excellent handling characteristics, the STI is renowned for its razor-sharp precision and track-focused capabilities.
- The WRX is more widely available, but the STI has a more limited production run and may be harder to find in dealerships.
- However, if you want a more affordable option with a good balance of performance and practicality, the WRX is a solid choice.
When comparing the Subaru WRX and STI, horsepower is a crucial factor to consider. Both models offer impressive performance, but the STI takes the lead in this department. In this blog post, we will delve into the horsepower differences between these two legendary vehicles and explore the reasons behind their variations.
Powertrain Comparison
The WRX is powered by a 2.4-liter turbocharged boxer engine, producing 271 horsepower and 258 lb-ft of torque. The STI, on the other hand, boasts a more potent 2.5-liter turbocharged boxer engine, generating 310 horsepower and 290 lb-ft of torque.
Engine Differences
The STI’s increased horsepower can be attributed to several engine modifications. It features a larger turbocharger, a higher compression ratio, and revised intake and exhaust systems. These enhancements allow the STI to produce more boost pressure and flow more air into the engine. Additionally, the STI’s engine is equipped with forged pistons and a stronger crankshaft, enabling it to handle the increased power output.
Drivetrain and Transmission
Both the WRX and STI utilize a Symmetrical All-Wheel Drive system, ensuring optimal traction and handling in various conditions. However, the STI benefits from a more advanced version of the AWD system, known as the Driver-Controlled Center Differential (DCCD). This system allows the driver to adjust the torque distribution between the front and rear axles, providing greater flexibility for different driving scenarios.
The WRX comes standard with a 6-speed manual transmission, while the STI offers both 6-speed manual and CVT (Continuously Variable Transmission) options. The manual transmission in the STI features a short-throw shifter for precise and engaging gear changes.
Performance Figures
The horsepower advantage of the STI translates into superior performance figures. It accelerates from 0-60 mph in 4.8 seconds, compared to 5.4 seconds for the WRX. The STI also boasts a higher top speed of 160 mph, while the WRX is limited to 145 mph.
Handling and Dynamics
While both the WRX and STI offer excellent handling characteristics, the STI is renowned for its razor-sharp precision and track-focused capabilities. It features a stiffer suspension setup, larger brakes, and a more aggressive aerodynamic package. These enhancements provide enhanced stability, reduced body roll, and improved cornering performance.
Practicality and Daily Use
Despite their performance-oriented nature, both the WRX and STI offer a reasonable level of practicality for daily use. They provide ample interior space, with seating for five passengers and a decent-sized trunk. The STI, however, sacrifices some trunk space due to its larger rear wing.
Pricing and Availability
The Subaru WRX has an MSRP starting at $30,605, while the STI starts at $38,995. The WRX is more widely available, but the STI has a more limited production run and may be harder to find in dealerships.
Which One is Right for You?
Ultimately, the choice between the WRX and STI depends on your individual needs and preferences. If you prioritize raw power, track performance, and handling precision, the STI is the clear winner. However, if you want a more affordable option with a good balance of performance and practicality, the WRX is a solid choice.
Frequently Asked Questions
Q: Which model has a higher top speed?
A: STI (160 mph)
Q: What is the horsepower difference between the WRX and STI?
A: 39 horsepower
Q: Does the STI offer a CVT transmission?
A: Yes
Q: Which model is more affordable?
A: WRX
Q: Is the STI a good daily driver?