The 2006 Town Car is available in four trim levels and two wheelbase lengths. Sharing the standard (117.7-inch) wheelbase are the Signature ($42,055), Signature Limited ($44,920), and Designer Series ($46,435). Signature L ($50,525), on the longer, 123.7-inch wheelbase, provides more headroom for all passengers and nearly six inches of additional legroom for those sitting in the rear seat.

The Executive series, which was once the base consumer model, is now available for commercial livery only.

Signature is a fully equipped luxury car, with premium leather seating surfaces, eight-way power driver and passenger seats with power lumbar support, dual-zone electronic automatic temperature control, overhead console, extended rear park assist, 17-inch 12-spoke machined aluminum wheels, dual-power remote-control heated outside mirrors with auto-dimming on the driver's side, auto-dimming inside rearview mirror, power-adjustable pedals, driver and passenger front dual-stage and side-impact airbags, CD player, remote fuel filler door release, remote keyless entry system, keyless entry keypad on driver door, automatic parking brake release, SecuriLock passive anti-theft ignition key system, speed control, steering wheel-mounted audio/climate controls, power pull-down trunk lid, SmartLock anti-lockout system and universal garage door opener. Options are somewhat limited at this level.

Signature Limited adds Soundmark audiophile dual-media sound system; leather-wrapped tilt steering wheel with wood inserts and audio, speed and climate controls; full power trunk with key fob open and close; memory driver's seat, pedals and mirrors; heated front seats; and its own 17-inch, 10-spoke machined aluminum wheels, Also, a wider range of options become available.

Designer adds chrome trim on the B-pillar, door handles, and its unique18-spoke wheels. Provence leather seating surfaces, adjustable rear head restraints, and two-tone door panels brighten its interior.

Signature L begins with Signature-level equipment and adds folding front and rear arm rests with storage; a rear seat amenities package with dual power points, four-way rear head restraints, tissue bin, illuminated cigar lighter, heated rear seats and remote controls for audio, climate and front passenger seat. A heavy-duty front stabilizer bar helps compensate for its six-inch longer wheelbase.

Major options include Navigation ($2,995-3,600), HID headlamps ($495), chromed wheels ($895), power glass sunroof ($1,595), and a six-CD changer ($605), which is available at no cost with the sunroof and/or on Signature L. As we noted above, availability of some options varies with series, so see your dealer for details.

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