[3] A 2007 facelift, introduced at the 2006 Paris Auto Show, included upgraded specifications, a curb weight reduction of 250 pounds,[5] revised suspension and a 3.8 L V6 engine (North America) with a 32-percent increase in power over its predecessor.

[8] The Opirus' styling — described variously as conservative,[9] neo-classic,[4] restrained, unoriginal and derivative[9] — drew cues from disparate sources, notably the Mercedes-Benz E-class, Lincoln Town Car, Jaguar S-Type, Lexus GS, Chrysler 300C, and Lancia Thesis.

[2][10] In the Korean Domestic Market, interior features included available heated and reclining rear seats,[3] high-intensity-discharge headlights, navigation system, electro-luminescent gauges, ignition immobilizer, reverse parking sensors and electronically adjustable suspension settings.

[11] In North America, the sedan was marketed to value-sensitive 40-to-60-year-old professionals[4][3] with standard equipment at introduction including manually tilting leather-wrapped, four-spoke steering wheel[3] with faux woodgrain inserts and remote audio and cruise controls; faux wood grain dash, console and door accents (lighter prior to the 2007 facelift, darker thereafter); power locks and windows; CD player with six speakers; electronic driver- and passenger-adjustable climate control; front, curtain and side airbags;[3] dual zone automatic climate control; keyless entry;[11] herring bone cloth interior; glove-box only key; elongated LED turn-signals; rain-sensing windshield wipers; analog clock; foot-operated parking brake (releasable by a dash-mounted pull-handle); power moonroof; 16" alloy wheels; full-size spare on an alloy wheel;[12] and an eight-way powered driver's bucket seat and four-way passenger bucket seat[13] with door-mounted adjustment controls using a "mock-seat" ergonomic design.

[11] The interior received heavy acoustic insulation,[14][9] and later models included heated rear seats, and electro-luminescent instrument lighting.

Power and Associates recognized the Amanti as the "Most Appealing Premium Midsize Car" in its 2005 Automotive Performance, Execution and Layout Study.