Local Trade, 3.5L V6 Engine, LXI Package, Leather Power Seat, CD Radio, Antitheft System, Keyless Entry! Beyond the Concorde’s still-striking appearance lies a roomy and functional sedan that rides pleasantly, is easy and enjoyable to drive, and feels more nimble than many big cars. Front bucket seats are standard in all models. The LXi gets a 232-hp, 3.5-liter V-6. The Concorde has large doors, a spacious interior and a roomy trunk. Because of its higher roofline, backseat passengers get slightly more headroom in the Concorde.