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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.

This 'tattooed' Lexus UX is the first of its kind, and we love it

Lexus commissioned the first “tattooed” car ever, and itÂ’s chosen the UX as the tattoo artistÂ’s canvas. Art cars and special projects catch our eye sometimes, but this particular project is one of the most intriguing works of art on a car weÂ’ve seen in a long time. The process that tattoo artist Claudia de Sabe went through to translate her vision onto the UX is what weÂ’re really interested in here. Since the UX is obviously a metal car, de Sabe needed to use a Dremel tool to drill away the blank white surface paint, exposing the bare metal underneath. Those painstakingly drilled lines were used as the pattern for the art taking shape. She had to be unerringly precise in her work. After all, thereÂ’s no magic eraser for drilling into a carÂ’s metal body panels. Spending that much time free-drawing with a Dremel is intensive and demanding work, too. Comfortable positions are hard to come by, and a slip could be disastrous. After the pattern was drilled in, de Sabe switched to car paint and brushes. The koi fish and waves were painted on by hand, and then finally, de Sabe used gold leaf to create highlights in the paint and give it a stronger 3D effect. To protect the artwork, a layer of lacquer was applied, making it possible to drive this UX on the road. From the planning stages to the finished product, Lexus says it took six months. The in-studio work from de Sabe (and her tattoo artist husband who assisted her work) took place over five eight-hour days. “My main inspiration for the design of the car was just all the beautiful artwork that IÂ’ve seen in Japan, in the temples, ukiyo-e prints, all of that artistic background,” de Sabe says. Tattooing a car isnÂ’t cheap either, as Lexus estimates this bespoke work would cost “upwards of GBP120,000” (about $140,000). Lexus made a video featuring de Sabe explaining her work and showing the “tattooing” in progress. ItÂ’s worth a quick watch, so check it out below. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

Lexus says it's not worried about LS sales decline in face of S-Class, Model S

The Lexus LS is old. Sure, it received a refresh for model year 2013, but it hasn't had a clean-sheet redesign since George W. Bush was in office. It's the oldest vehicle in its segment, debuting in 2007, a full year before the current-gen BMW 7 Series, two years before the Hyundai Equus and Jaguar XJ and three years before the Audi A8.
This is particularly troubling as buyers flock to the heavily redesigned Mercedes-Benz S-Class, which debuted late last year, and the all-electric Tesla Model S. Despite this move, though, Lexus is (worryingly in our minds) not at all concerned.
"We don't feel it's a problem with the car," Brian Smith, VP of marketing for Lexus, told Wards Auto. "Many of the buyers in that segment want what's new and they're trying it."