2010 Subaru WRX STI

Subaru WRX STI are engaging, appealing cars, and almost unique in the marketplace. They are fast and fun to drive yet practical. Based on the Impreza compact, they are economical to operate and, more than ever, they make excellent cars for commuters who like a little spice in their daily drive. Despite officially being part of the Impreza family, the Subaru STI is essentially its own car, and available only as a hatchback. Nearly every major mechanical system is unique to the STI: six-speed manual transmission, special suspension and brakes, unique interior appointments and a high-tech, manually adjustable all-wheel-drive system. Its acceleration times match those delivered by exotic sports cars such as the Aston Martin V8 Vantage. The current model offer refinement when compared to the STi that first went on sale in the in 2004. It's grown from an in-your-face, sport-compact icon to something more like a true, brand-building performance flagship. It also starts $10,000 higher than the base WRX. Their all-wheel-drive system can legitimately be considered a safety and foul-weather advantage, even if, with the powerful, turbocharged engines in the WRX, it's marketed as a performance enhancement, a role it also fills. The STI is available only as a hatchback, and it's the raciest looking WRX of all, particularly with the optional forged, thin-spoke BBS wheels.

STI Power and Drive

 The STi's centerpiece is a higher-tech, higher-boost version of the 2.5-liter four, generating 305 horsepower. The STi is faster than ever, but it's also quieter, more understated, and easier to drive quickly.  A new 2010 STI Special Edition is aimed at those willing to trade a few amenities for more handling performance. The suspension is adopted from the Japanese market STI spec C, which adds a 1-millimeter thicker rear stabilizer bar, stiffer rear sub-frame bushings plus upgraded springs. The front springs are 16-percent stiffer, while the rear springs have been stiffened by 29 percent. The STI's relative civility is apparent in all its dynamic characteristics. Its suspension tuning, or the mix of overall ride comfort, sharp handling and pavement-sticking grip, is one of the highlights. Steering in both the standard WRX and STI is lighter than most performance-tuned cars. But it's also fairly quick, so the car turns a lot with small movements on the wheel, and it's accurate. With a little familiarity, the typical driver will have no trouble directing these cars in very precise fashion.

At its handling limits, the STI has a slight inclination to understeer, or to generate the feeling that its front wheels are pushing off the road.Yet that tendency is less than in the typical front-drive car, and the all-wheel-drive system allows the driver to get the front end to tuck into a curve by adding a little more gas.The STI stays planted under rough, abrupt or heavy-handed inputs on its controls.Whether braking hard into a curve, or panic-braking with a sudden twist of the steering to avoid an accident, the anti-skid electronics work to keep the car's weight balanced and the tires on that fine line between maximum grip and skid. One STi feature, called SI-Drive, allows a choice of three maps for the electronic throttle, ranging from commute grade to extra aggressive. This allows the driver to control how much the engine accelerates with a given movement of the gas pedal: smooth, mild response to big dips on the pedal, or major acceleration with small dips. The VDC also offers choices: Standard, Off, and Performance, which allows enough wheel slip to slide the car but still tries to gather things up if it gets too sloppy. A manual adjustment for the center differential controls how much of the power is sent to the front or rear wheels, as it is in a real World Rally Championship car Between the various throttle maps, stability and differential settings, there are almost enough permutations to confuse a racecar engineer.

Design of the 2010 Subaru STI

 2010 Impreza STI have an aluminum hood, which reduces weight in front and helps distribute the car's mass more evenly over the front and rear wheels. It features the latest evolution of what Subaru calls its Ring Frame Reinforced body design. Think of RFR as a safety cell in roughly a cube shape around the passenger compartment, made of stronger, hydro-formed steel sections. The idea is more strength and rigidity without an undue increase in weight, and it may help explain the excellent ratings in NHTSA crash tests. The first objective of RFR is better occupant protection, but the structural improvements pay dividends in many respects, from more responsive handling to improved smoothness in just about every aspect of the car's operation. The STi was first created as a homologation car, or a required street-legal copy of Subaru's winning World Rally Championship competitors. Its fenders bulge more prominently than those on the other WRX models to stretch over extra-wide tires, and all its various vents and air deflectors are functional. The STI unitbody also has some significant enhancements compared to other WRX models, starting with extra high-strength steel at suspension mounting points and key structural joints.

Impreza STI Cabin

The STi models actually have decent room in the back seat and good cargo capacity. The seats in the STi are more like aftermarket performance seats, which means harder and more heavily bolstered. They're even better for hard driving, but the snugger fit leaves less squirm room during longer, more relaxed travel, and they demand more energy to climb in and out of. The seats come in black Alcantara with red stitching. The WRX STI ($34,995) is available only as a hatchback, with a six-speed manual transmission. The STi is equipped comparably to the standard WRX Premium, though the extra money mainly adds performance, starting with the 305-hp 2.5-liter engine. Options include forged, 18-inch BBS wheels ($2,000) in gold or silver, and the navigation system.The WRX STI Special Edition ($32,995) features a sport-tuned suspension.

Conclusions

STi stands for Subaru Technica International, the high-performance division that made the WRX famous through considerable success in the World Rally Championship.
Safety equipment on the Impreza WRX STi models includes the Subaru Advanced Frontal Airbag System featuring side-impact air bags, as well as full-length airbag curtains. Active safety features include ABS with Electronic Brake-Force Distribution and Brake Assist, electronic stability control with traction control, all-wheel drive. For the latest updates and details, visit Subaru's official 2010 WRX STI page. The Impreza earned Top Safety Pick by the Insurance Institute for Highway Safety (IIHS) with the highest rating in frontal offset, side and rear impact tests. The Impreza WRX STi is for anyone looking for a thrilling ride at an excellent value. The rotors are larger than those on the typical small car, but especially so on the STI. Its brake hardware is supplied by Brembo, which also makes the brakes for Ferrari and other ultra-high performance car builders. The ABS on these cars is among the most sophisticated available. It uses various sensors to control the braking force at each rear wheel independently, which in turn can help keep the car's rear end from sliding around while braking aggressively in a curve.