Tuesday, September 10, 2013
2006 Lexus GS 430 Review
When it debuted in the second-generation Lexus GS lineup in model year 1998, the V8-powered GS400 added serious performance to Lexuss expected refinement and luxury. Its styling was an evolution of that introduced on the original inline six-cylinder GS 300 back in 1993, but bolder and with more attitude. Few parts underneath that skin interchanged with the earlier GS. And performance was steadily increased. The factory even started a successful racing effort in 1999. For the 2001 model year, a new and larger engine bumped the performance factor further as the GS 400 became the GS 430.
Were barely into 2005, but the 2006 GS is now here. And, while the styling is a further refinement of the now-familiar GS coupe-like theme, there are again some very significant changes under the skin. The third-generation GS is a technological tour de force that points to future directions for all Lexus cars, not only in looks but in materials and sophisticated electronic control systems as well.
Lexus chose to introduce the 2006 GS at the plush Aerie Resort, Conde-Nasts 2002 resort of the year located near Nanaimo, British Columbia. With unusual (for February) sunny, spring-like weather, the Aerie offered an ideal setting to experience these luxurious and very sporty sedans. We had an opportunity to drive the V-6 powered GS 300 in rear- and all-wheel-drive forms, as well as the rear-drive V-8 powered GS 430. The GS shows off the new corporate design philosophy, which Lexus calls "L-Finesse". Future Lexus passenger car models will embody L-Finesse design elements. Shigetoshi Miyoshi (chief engineer for both the GS and the SC430 coupe) told us L-Finesse suggests "performance, refinement and luxury". It also signals the giant Japanese carmakers determination to be a major player in the global sports luxury car market. Although recognizable as the progenitor of the original GS, the in-house designed 2006 is (by consensus of those journalists at the Aerie) far better looking than Giugiaros original 1999 design. While it is actually a bit larger than the original GS, the new 2006 version looks much more buff.
COMFORT: Put the ``Smart Access keyless entry fob in your pocket, and walk up to a new GS. The car will chirp as it automatically unlocks. Open the door and get in. With your foot on the brake pedal, press the ``start button. No, Lexus is not the first manufacturer to use such a system, but the Lexus implementation is one of the most functional. Itll be had to go back to an old-fashioned key. Once inside, welcome to the new look of Lexus. While the expected sumptuous comfort is there, with excellent standard heated perforated leather seats, wood trim, and all of the usual power accessories, the styling is fresh and more angular. Control and instrument layout enhances the driving experience, and requires no complex learning curve on the part of the driver. The main instruments have machined aluminum facings, and use a unique lighting system that makes them easily visible at all times. Less-used controls are hidden behind a panel to the left of the steering wheel. The interface for the optional navigation system is a major improvement over the last generation. Instead of having the audio, climate, and other systems controlled from sub (and sub-sub-sub...) menus on the touch screen, the major systems are controlled by well-marked buttons surrounding the screen. Touch menus are used as sparingly as possible. Intuitive, no learning curve, no confusion! The extra two inches added to the wheelbase seems to have gone into rear-seat legroom, which should make tall passengers happy.
SAFETY: And you thought we were done with the acronyms.... Besides having all of the expected passive safety devices including front, side, knee, and side curtain airbags, and active safety enhanced by VDIM, the new Lexus GSs ``Omni Directional Compatibility Body Structure (ODBCS) surrounds occupants with controlled-crushable front, rear, and side zones. The optional ``Pre-Collision System (PCS) uses a radar sensor to detect obstacles in front of the car and computerized systems to quicken the cars reflexes if a collision is deemed imminent.
RIDE AND HANDLING: Performance driving requires firm spring and shock settings to minimize weight transfer from acceleration, deceleration, and cornering. A luxury ride requires softer settings for comfort. In the GS 430, both requirements are met. The new suspension incorporates both anti-lift and anti-squat geometry to handle fore-and-aft weight transfer. The driver can select ``normal or ``sport modes for the AVS variable-damping shocks. ``Sport is a touch firmer, and still quite comfortable. As mentioned, the GS 430 acquitted itself very well on the track, at a speed level higher than Id drive on the street. It was also as smooth, quiet, and comfortable as expected on the highway and around town. The VGRS allows good steering feedback and road feel, with effort appropriate to road speed, and never feels numb.
PERFORMANCE: The 2006 GS 430s namesake engine is mostly unchanged. No complaints there - 300 horsepower (at 5600 rpm) and 325 lb-ft of torque (at 3400 rpm) from a 4.3-liter V8 are not anemic, and average fuel economy in the neighborhood of 20 mpg is good for a high-performance sedan. The major driveline change this year is the transmission. The old five-speed automatic has given way to a new manually-shiftable six-speed. More ratios and smaller steps between them mean improved performance and economy. VVT-i variable valve timing helps give a broad torque curve, so that shifting is rarely necessary.
On the Road
Anticipating extra vigilance on the part of the island constabulary, Lexus wisely secured an unused taxiway at Nanaimos municipal airport to showcase the GS dynamic abilities. Im glad they did; I was able to push the GS well beyond what prudence would dictate and it allowed us to do so without fear of running into any of the local wildlife (not to mention cars or, in this case, parked airplanes... try explaining that one to the insurance adjuster). The most obvious advantage the GS 430 has over its direct competitors is its advanced stability control system (VDIM - Vehicle Dynamics Integrated Management). VDIM takes Lexus already excellent VSE automatic stability control system, which uses individual wheel brakes and the throttle to control fishtailing, to another level. By integrating steering control along with brakes and throttle, VDIM makes VSE feel almost primitive by comparison. It allows the driver to maintain complete control under the most extreme conditions. The net effect was to make me look like a far better driver than I actually am. I was able to snake through a greasy slalom course at speeds that caused the VDIM-less GS 300 AWD, which we were using for comparison, to stumble.
