The IS has served as a whetstone to help sharpen Lexus driving performance across the lineup but, more directly, it has forged indelible bonds between driver and machine that reach into the hundreds of thousands. It’s no wonder the IS has earned worldwide adoration for its extraordinary driving performance.
One of the first things engineers targeted was enhancing body rigidity. This was done in key areas such as reinforcing the radiator side supports, increasing the number of front-side-member weld points, and optimizing reinforcement structures from the C-pillars to the sides of the roof.
The increased rigidity not only helps reduce unwanted noise and vibration, but it also helps improve riding comfort and driving performance with enhanced response to steering input.
For the first time, the new IS will be available with larger 19-inch wheels to improve cornering force and provide a greater contact patch with the road. Engineers revised the suspension layout and front pickup points to help accommodate the larger tire-and-wheel package.
Overall two different 19-inch wheels are available on F SPORT models, including a unique BBS wheel specific to the F SPORTs equipped with the Dynamic Handling Package. Standard 18-inch wheels will replace the outgoing 17-inch wheels on all other models.
Taking a cue from the Lexus LFA supercar, engineers took rigidity enhancements one step further by employing lighter weight hub bolts to secure each wheel to the new IS. The use of hub bolts allows for improved fastening strength and therefore an increase to rigidity to further enhance braking and handling.
What’s more, the move to hub bolts sheds approximately 2 pounds of total unsprung weight. The new bolts also feature a black coating so as not to draw any attention away from the attractive new wheel designs.
Complementing the enhancements to overall rigidity, multiple refinements were made to the suspension setup. For starters, engineers targeted a reduction in unsprung weight. The new IS features coil springs that are 20 percent lighter than the outgoing model.
New A-arms are employed as well that feature a forged aluminum material versus the outgoing steel composition, resulting in an 18 percent weight reduction. Engineers also opted for a new material for the suspension stabilizer bar to optimize the diameter and thickness to provide a 17 percent weight reduction.
The bold new exterior styling of the 2021 IS not only aims for a provocative design, but its athletic silhouette is also meant to signify the agile changes that have taken place below the sheet metal.
Overall, the new IS evokes lower, wider proportions. It is slightly wider, with muscular fenders that extend to enhance and accommodate the larger available 19-inch wheels and larger diameter tires. The wide and low form nods to the inherently high level of driving performance the IS possesses, but the sleek lines are also complemented with overtly aggressive sharpness carved into the side and shoulder character lines
Starting at the front of the new IS, a newly designed spindle grille features a three-dimensional, polyhedral structure that originates from the foremost tip of the grille to emphasize a sense of presence.
On F SPORT models, block forms based on a spindle motif combine with a mesh pattern to achieve a sporty impression. F SPORT models also feature a grille-bottom air intake that allows air to flow through to assist in cooling the brakes, a design inspired by the RC F.
Standard IS models feature a new grille that includes mini spindles within its design. This intricate pattern required six different types of cutting tools in order to create the mold.
Luxury and performance are not necessarily mutually exclusive, and yet the two live in harmony in the new IS. The interior features standard NuLuxe-trimmed seating, with 10-way power driver and 8-way power adjustable front passenger seats, a dual-zone automatic climate control system with touch-sensitive controls, an available power moonroof, and SmartAccess with push button start.
Although, for some, the IS can only be viewed as a rear-wheel-drive compact sports sedan, others reside in climates where all-wheel-drive is a necessity. Fortunately, the 2021 IS will be available in both rear- and all-wheel drive options, and there are three distinct powertrain options available depending upon the grade.
The rear-wheel drive IS 300 features a 2.0-liter, turbocharged and intercooled inline four-cylinder engine. The 2.0-liter engine is updated for 2021, featuring an adaptive transmission control that helps determines the most appropriate gear for each driving situation based on driver input to achieve linear response.
Rated to deliver 241 horsepower, the stout four-cylinder also produces a solid 258 lb-ft of torque across a flat torque range from 1,650 rpm all the way up to 4,400 rpm. It’s not only powerful, it’s efficient, too, thanks to a sophisticated Variable Valve Timing intelligent – Wide (VVTi-W) system which allows the engine to switch between the Otto and Atkinson combustion cycles to maximize efficiency.
It comes equipped with an eight-speed Sport Direct Shift (SPDS) automatic transmission. It integrates an advanced G-force Artificial Intelligence (G-AI) system that monitors multiple performance parameters to determine the optimum gear selection.
For added traction in cold-weather climates, the IS 300 is also available with all-wheel drive. The IS 300 AWD is powered by a 3.5-liter V6 that delivers 260 hp and 236 lb.-ft. of torque to all four wheels through a six-speed automatic transmission.
The electronically controlled all-wheel drive system is designed to help enhance traction and grip by automatically varying front-to-rear torque distribution. On dry roads it maintains a 30:70 front-to-rear torque split for maximum performance, but it’s capable of sending as much as 50 percent of the power to the front wheels in certain conditions.
For buyers who crave maximum power, there’s the IS 350 in either rear-wheel drive or all-wheel drive powered by a 3.5-liter V6 that produces 311 hp and 280 lb.-ft. of peak torque. The rear-wheel drive model uses the same eight-speed Sport Direct Shift automatic transmission found in the IS 300 RWD, while the AWD version sends power through a six-speed automatic.
If there’s any question about the performance-minded nature of each vehicle, look no further than their 0-60 times, as the IS 350 RWD covers the ground in 5.6 seconds while the IS 350 AWD goes from 0-60 mph in 5.7 seconds.
The standard Lexus Safety System+ (LSS+) found on the new IS receives additions for 2021 in the form of the new LSS+ 2.5. A number of key features that are part of the Lexus Safety System+ have been enhanced, along with the addition of a few key features.
For starters, the Pre-Collision System (PCS), which include Frontal Collision Warning (FCW), Automatic Emergency Braking (AEB), Pedestrian Detection and Bicyclist Detection, features an enhancement to the single-lens camera and millimeter-wave radar elements to expand the response range.
By enhancing the radar and camera capabilities it is now possible for the system to help detect not only the vehicle ahead but also a preceding bicyclist in daytime and even a preceding pedestrian in daytime and low-light conditions. At intersections, the system has improved recognition of an oncoming vehicle or pedestrian when performing a left-hand turn and may activate typical PCS functions if needed.
Additional PCS functions include Emergency Steering Assist (ESA), which is designed to assist steering within the vehicle’s lane as cued by the driver.
All-Speed Dynamic Radar Cruise Control (DRCC) can be activated above 30 mph and is designed to perform vehicle-to-vehicle distance controls down to 0 mph and can resume from a stop. DRCC also includes a new feature that allows for smooth overtaking of slower vehicles.
If traveling behind a vehicle traveling slower than the preset speed, once the driver engages the turn signal the system will provide an initial increase in acceleration in preparation for changing lanes; after changing lanes, the vehicle will continue acceleration until it reaches the original preset driving speed.
To help IS drivers change lanes with confidence, the standard Blind Spot Monitor is designed to help detect and warn you of vehicles approaching or positioned in the adjacent lanes. Standard Rear Cross Traffic Alert (RCTA) can offer added peace of mind by helping to detect vehicles approaching from either side while backing out with a visual and audible warning.