This front-drive newcomer to Honda's upscale division targeted the Audi A4, Infiniti G35, BMW 3-Series, and other sporty, near-luxury sedans. Based on the European-market Honda Accord, the TSX slotted between Acura's smaller RSX coupe and its larger TL sedan, in both size and price. The only engine was a version of Accord's 2.4-liter four-cylinder, tuned for 200 horsepower versus 160. Two transmission choices were offered: a close-ratio six-speed manual or optional Sequential SportShirt five-speed automatic with manual shift gate. Acura promoted the "race-bred suspension" of its TSX sedan, which used a drive-by-wire throttle system. Lower air intakes on the wedge-profiled four-door were meant to evoke the image of racing brake ducts. Antilock four-wheel disc brakes, traction/antiskid control, and 17-inch alloy wheels were standard. So were curtain side airbags, front torso side airbags, perforated leather seating upholstery, a sunroof, automatic dual-zone climate control, and xenon high-intensity-discharge headlamps. The standard 360-watt, eight-speaker audio system included an in-dash six-CD changer. A leather-wrapped tilt/telescoping steering wheel contained integrated audio and cruise controls. No options were offered, though a second model added a navigation system with voice recognition for some navigation, audio, and climate functions.