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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.

Lexus IS 250 to get new turbo four?

"All show, no go." That's how I described the 2014 Lexus IS 250 F Sport that you see above, when I reviewed it back in November. Don't get me wrong, there's a lot to like about the new IS, but the 204-horsepower, 2.5-liter V6 in the IS 250 is not on that list. In my review, I suggested that Lexus ought to get on the bandwagon of offering a small-displacement, turbocharged, four-cylinder engine in its base IS (like its rivals), and now the folks at Motor Trend are furthering that discussion.
Lexus pulled the wraps off its new NX 200t crossover at the Beijing show recently, and it'll be the first vehicle in the company's lineup to use a brand-new - you guessed it - 2.0-liter turbo-four. With 238 horsepower and 258 pound-feet of torque on tap, that represents a healthy increase over the 204 hp and anemic 185 lb-ft currently being offered with the 2.5-liter V6, and we imagine the fuel economy gains will be rather significant, too. For comparison, the Lexus' four-pot power numbers are very close to the 240 hp and 255 lb-ft offered in the same-sized engine that BMW uses in the 328i.
Motor Trend also posits that Lexus may consider changing the base IS' name from 250 to 200, or perhaps 200t, to properly reflect the new engine's displacement. Of course, that's assuming Lexus doesn't pull a BMW or Mercedes-Benz, and no longer has its alphanumeric names properly reflect the size of the powerplant found underhood.