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Why is there a huge bulge in 2021 Lexus IS 300 AWD's driver footwell? We explain

After an initial turn a few weeks ago for the 2021 Lexus IS first drive review, the revised luxury sedan has returned to the Autoblog garage for a second look. This middle-of-the-road IS 300 AWD pairs a 260-horsepower V6 with a six-speed automatic transmission and four driven wheels, and frankly it's the least interesting way to spec out the redesigned sedan. While there are cars in this segment designed to get a performance boost from their all-wheel-drive systems even in dry conditions, the IS isn't one of them. Adding insult to injury, you get stuck with a cramped driver-side footwell care of the engineering shenanigans that went into making this system possible.  While we've mentioned this particular compromise before, we rarely touch on the reasons why it exists in the first place. The fundamentals are fairly obvious; the standard IS utilizes a longitudinal, rear-wheel-drive powertrain. As is typical with this configuration, the transmission sits in a tunnel beneath the center console. This arrangement works just fine, provided you don't need to power the front wheels.  To do so in a traditional car like the IS requires a literal end-around maneuver involving the engine and transmission, which we've diagrammed for you below care of MSPaint. This is a bit simplified for the sake of this write-up, and it should be noted that this is not the only way to implement AWD in an inherently RWD platform, but it illustrates how the power for the front axle (red) and rear axle (blue) flows from the transmission to the drive wheels. To get juice flowing to the front axle, Lexus had to add a parallel output shaft, exiting the transmission from the front with enough clearance for the bell housing and engine, which sits between the transmission and the front differential. This requires quite a bit of lateral reach, meaning the housing has to extend much farther out than usual to accommodate it (yellow arrow). As a result, the all-wheel-drive transmission looks a lot like a sci-fi gun with a chunky drum magazine hanging off the side of it. The hump (above right) in the footwell is there to clear this protrusion. This basic configuration isn't unique to Lexus. In fact, if you look at a BMW xDrive cutaway, it's similar. So, why no "hump" in other cars? There are multiple factors, but to boil it down to what is most relevant, it's a combination of the resulting shape of the Lexus transmission housing and the size of the IS chassis.

Lexus ES gets a tech-focused mid-cycle update for the 2022 model year

Lexus traveled to the 2021 edition of the Shanghai Auto Show to unveil the updated ES. Scheduled to launch as a 2022 model, the sedan ushers in a long list of handling, comfort, and technology improvements. Most of the major changes are found in the cabin, where the ES finally receives a touchscreen-based infotainment system. Entry-level models ship with an 8.0-inch screen, while upmarket versions receive a 12.3-inch display. Both are positioned 4.3 inches closer to the front passengers; it was easier to move the screen than to give buyers longer arms. The touchpad-like remote interface located on the center console, next to the gear selector, remains. Lexus also updated the technology motorists can't see but regularly rely on. The Lexus Safety System+ 2.5 suite of electronic driving aids comes standard across the line-up, and improvements to the camera and the millimeter-wave radar increase the pre-collision system's response range. Intersection Turning Assist, which can detect if the driver is about to turn in front of an oncoming car or a pedestrian, joins the roster of safety systems. Also new are Emergency Steering Assist, Curve Speed Reduction, and a function that automatically increases the car's speed if the driver is about to pass a slower car. Lexus points out it made its Lane Tracing Assist feature smoother, too. Although the ES has traditionally leaned towards the comfort side of the luxury sedan scale, Lexus made small but meaningful tweaks to improve handling with the help of Toyota president Akio Toyoda, an enthusiast who regularly races a Supra. Engineers fitted a new rear suspension brace to increase torsional rigidity and stability, while the non-hybrid model's brake master cylinder and brake booster were redesigned to provide a more linear feel. Every ES gets a bigger brake pedal, and hybrids benefit from improved pedal feel, according to the company. Subtle exterior revisions, such as a redesigned grille and new-look headlights, set the 2022 ES apart from the outgoing 2021 model. New paint colors and additional wheel designs round out the list of major exterior updates. Lexus added a hybrid F Sport model to the portfolio. Called ES 300h F Sport, it gains a mesh grille with a dark frame, a spoiler on the trunk lid, 19-inch wheels, and an array of sporty-looking interior accents. Motorists who want a bit of go with their show can order the optional Dynamic Handling Package (DHP) available only on the V6-powered ES 350 F Sport.

Next Lexus LX 600 and LX 750h specs reportedly leaked

Specs for the next Lexus LX appear to have been leaked to a Japanese blog. The flagship luxury SUV will reportedly come in two flavors, and offer greater differentiation from its Land Cruiser cousin than ever before. One of those variants is, for the first time, a hybrid version. The Japanese site Creative Trend reported on the 300-series Land Cruiser specs before most, and aside from some small discrepancies in horsepower and torque numbers, was surprisingly accurate. They even called the existence of a GR Sport performance trim level. Now, they've turned their focus to the LX. As translated by Lexus Enthusiast, the entry spec will be called the LX 600, and will likely feature the Land Cruiser's 3.5-liter twin-turbo V6. That should be good for an identical 415 horsepower and 480 pound-feet of torque. Creative Trend adds that in the Middle East, the entry model will be called LX 500d, implying it'll be equipped with the Land Cruiser's turbodiesel 3.3-liter V6 generating 309 horses and 516 lb-ft.  The flagship model, however, is said to be the LX 750h, which adds a hybrid-electric system to the 3.5-liter petrol V6. Together, they'd make a potent 480 horsepower and 642 lb-ft of torque. This powertrain is not available on the Land Cruiser. In addition, the LX will have a more luxurious and high-tech interior, with a rumored version of the new Lexus Interface that appeared on the new Lexus NX. However, whereas the NX sports a 14-inch version of the screen, the LX will reportedly receive a 17-inch version. Incidentally, it seems the LX may have already been seen in the NX's reveal video, albeit under a white cloth. Additionally, we have it on good authority from friends in Japanese media that both the Land Cruiser and Lexus LX will, in Japan, feature a fingerprint recognition system on the engine start button. The off-roaders routinely top the stolen vehicles list in Japan, with about 5 out of every 100 registered vehicles stolen every year and rates increasing. Most of them end up being shipped overseas where Land Cruisers and Lexus LXes are seen as tough status symbols. Lastly, the report says Lexus Japan will start accepting pre-orders in September, with the LX itself debuting in December. While we are sadly not privy to the new Land Cruiser, it's likely the Lexus LX will arrive stateside. Whether these specs carry over remains to be seen. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences.