Zephyr makes its debut for 2006 as a luxury version of the Ford Fusion and Mercury Milan. Sized and priced below Lincoln's rear-wheel-drive LS sedan, this is Lincoln's smallest car ever. Along with Fusion and Milan, Zephyr shares its basic architecture with the Mazda 6 from Ford's Japanese affiliate. Zephyr's only engine is the 221-hp V6 that costs extra in its siblings. A 6-speed automatic is its sole transmission. ABS, traction control, front side airbags, and curtain side airbags are standard. So is leather upholstery and wood interior trim. Options include xenon headlamps, sunroof, cooled front seats, and a navigation system.