What are the differences between Subaru Impreza WRX and STI?
2 Answers
The differences between the Impreza WRX and WRX-STI are as follows: 1. Different exterior dimensions: WRX: Length × Width × Height [mm] 4580x1795x1470. WRX-STI: Length × Width × Height [mm] 4570x1775x1460. 2. Different combined fuel consumption: WRX: MIIT combined fuel consumption 10.30 liters per 100 kilometers. WRX-STI: MIIT combined fuel consumption 11.30 liters per 100 kilometers. 3. Different maximum torque: WRX: Maximum torque [N.m] 407. WRX-STI: Maximum torque [N.m] 417. Relevant information about the Impreza is as follows: 1. Overview: Among all Subaru models, the Impreza has become synonymous with high-performance models as the most representative one. At the 2008 Beijing Auto Show, Subaru introduced the Impreza WRX STI high-performance version to the domestic market to meet the needs of Chinese consumers. 2. Configuration: Both 2009 Impreza WRX models are equipped with a 5-speed manual transmission, and Subaru's famous 2.5L horizontally opposed engine is also the standard power source for the 2009 Impreza. The classic 2.5-liter engine can deliver 265 horsepower at 6000 rpm, which is 41 horsepower more than the 2008 current model.
I've driven quite a few performance cars, and the main differences between the Subaru Impreza WRX and STI lie in their performance upgrades. The WRX uses the FA20 turbocharged engine with around 268 horsepower, which is sufficient for daily driving. The STI, on the other hand, features the EJ257 engine with approximately 300 horsepower, delivering significantly more power and quicker response, along with a more stable chassis during cornering. The STI's suspension is tuned to be stiffer, making small road bumps more noticeable, but it provides better cornering support. The WRX's suspension is softer, offering a more comfortable commute. In terms of the drivetrain, the STI comes with DCCD, allowing manual torque distribution adjustment, while the WRX has automatic torque distribution, which offers less driving fun. The STI is equipped with Brembo calipers for better heat dissipation, whereas the WRX uses standard calipers that may experience heat fade during prolonged driving. Externally, the STI features a small spoiler and larger wheels for a more aggressive look. There's a price difference of several tens of thousands, with the STI being more expensive. However, if you frequently drive on mountain roads or enjoy modifications, the STI offers double the fun. The WRX, on the other hand, is more economical and hassle-free.
