& 3.5 liter V6
& 306 hp
(from Lexus Press
Release) Lexus today revealed the IS retractable hard-top
convertible at the 2008 Paris Motor Show. Continuing the performance
and styling trends set by the IS luxury sport sedans, the IS 250C
and IS 350C will come to the U.S. in the late spring of 2009.
Featuring a three-panel roof that opens in just 21 seconds, the new
IS 250C and IS 350C provide the spirited sophistication of a
convertible and the sporty styling of a coupe. While the hood,
headlamps, door handles and mirrors are common to the exterior of
the IS sedans, all other body panels have been designed to blend
seamlessly with the new three-panel aluminum folding roof.
Powered by the same powertrain as the IS sedans, the IS 250C
features a 2.5-liter, 204-hp V6 mated to a six-speed manual or
six-speed automatic transmission; the IS 350C contains a 3.5-liter,
306-hp with a six-speed automatic. Revisions to the body structure
and suspension provide torsional stiffness and ride comfort with the
top down, and low Lexus-like Noise, Vibration and Harshness (NVH) on
par with the IS sedan when in coupe configuration.
The three-panel roof structure is completely constructed of
lightweight aluminum that helps achieve smooth, quiet retraction.
Unlike many retractable-roof mechanisms that increase in speed due
to the weight of the structure, a unique roof-brake mechanism slows
the closing roof-panels as they approach the windscreen area,
ensuring easy retraction just before closure. In addition, the top
completely retracts with no elements remaining in view. The
three-panel folding aluminum roof also helps provide compact
packaging and convenient luggage space.
The IS 250C and IS 350C's new exterior design provides dynamic,
unique styling when interchanging between convertible and coupe
configurations. A sleek aerodynamic design and a collection of
underbody covers help achieve its lowest possible drag coefficient –
0.29 Cd versus the IS sedan's 0.27 Cd – while creating minimal wind
turbulence on the cabin. An acoustic glass windshield, along with
optimized seals on the roof, door and window panels, contributes to
lower wind-noise levels.
A new fog-lamp design is integrated in the revised front air dam.
The rear overhang increases by two inches to improve luggage space,
providing storage for two golf bags in coupe configuration and one
in a convertible. New combination tail-lamp clusters feature LED
lights; a LED brake light is integrated within the standard rear
The interior maintains the innovation and luxury touch points
associated with the IS sport sedans, while new comfort and
entertainment features provide a consistent atmosphere regardless of
top configuration. Instrument gauges have been revised to help
increase visibility during top-down driving, and the climate-control
system has a speed-sensitive control feature that automatically
increases air flow when the top is down while also automatically
adjusting to vehicle speed.
The sound system has an equalizer-tuning feature that provides
consistent audio whether the top is up or down, and it also
automatically adapts to the natural loss of bass when the top is
With a four-seat configuration, the IS 250C and IS 350C's rear seats
feature a center console with built-in cup holders. In addition to
front doors that are 11.8 inches longer than the IS sedans, a new
one-touch automatic mechanism provides easier egress and ingress
through quick-acting, front-seat fold-and-slide activation.
Rear-seat comfort is enhanced by shifting seat position inboard,
providing improved headroom. The front seat backs are configured to
also provide better rear-seat legroom.
All body and chassis revisions have gone through extensive testing
to ensure that the IS 250C and IS 350C have nearly identical NVH
characteristics as the IS sedans, while still providing a consistent
blend of driving performance and comfort in convertible or coupe
configuration. They share common double-wishbone front and
multi-link rear suspension systems with the IS sport sedan models.
A number of body-structure changes have been integrated in the IS
250C and IS 350C to augment strength, roll-over protection and
torsional rigidity. Active safety features from the IS sedans
transfer as well, including Vehicle Dynamics Integrated Management (VDIM),
Vehicle Stability Control (VSC), and an available Pre-Collision
System (PCS). The Safety Restraint System (SRS) will include the
twin-chamber passenger airbag, while a new enlarged seat-mounted
side airbag helps provide additional protection in certain
side-impact scenarios. The convertible body shell has additional
energy absorbing side-impact materials that also help protect front
and rear passengers.