All STI models have an updated drivetrain for 2007. The positive-feeling but slightly notchy gearbox gets new gear ratios, and a new Torsen limited-slip rear differential is standard.

For STI shoppers looking for a little more luxury, a Limited model is once again offered, with a leather-trimmed interior, eight-way power driver’s seat, Harmon/Kardon sound system, and a moonroof.

Active Torque Vectoring uses braking on the inside front wheel to tighten up your turns, as with other WRX models, but the STI also has a helical limited-slip front differential and Torsen limited ...

It's not often that a car gets less expensive and sportier at the same time. But that's exactly what has happened with the new Subaru WRX STI Special Edition. It costs $32,995, whereas a standard ...

To understand the benefits of a limited-slip differential, you have to understand the basic components involved in turning a car’s engine power into forward (or reverse) movement.

A power moonroof, new leather seats, and additional undercarpet soundproofing--all at no charge--make the STI Limited's cabin a bit more hospitable, but you're reminded of the WRX's econocar roots ...