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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.

Is 'UX300e' trademark a sign of an electric Lexus to come?

That the biggest mainstream auto manufacturers will offer fully electric vehicles is no longer a question of if, it's an inevitable matter of when. Lexus has thus far taken the wait-and-see approach to the burgeoning market that is expected to take over throughout the next decade, but that could change soon. A recent trademark filing could indicate that Lexus is ready to introduce a fully electric version of its new UX crossover. Dug up by Autoguide, the trademark "UX300e" recently popped up on the European Union Intellectual Property Office (EUIPO). A separate look on TMView shows it is indeed linked to Lexus and was filed at the Norway office. The Lexus UX is just getting off the ground in December but is expected to be a huge seller for Toyota's luxury branch. The UX 200, which is offered with a naturally aspirated four-cylinder engine, is now Lexus' cheapest vehicle. The UX 250h offers a hybrid variant and is available with all-wheel drive. F Sport packages are available on both variants, in an attempt to add an extroverted sense of excitement. Although the trademark is far from a guarantee that such a car is coming, it all makes sense. Crossovers are booming business as of late, and many manufacturers, such as Kia with the Niro and Soul, are offering electric versions of cars that also have other traditional forms of motivation. We'll update as soon as we know more. Related Video:

Lexus' Detroit reveal is RC F, will have 460-hp V8

Yesterday, we brought you the image above, sent out by Lexus, teasing its Detroit Auto Show reveal. At the time, all we knew about the car was that it's a coupe, and falls into the automaker's F performance line. But now, some more details have leaked.
An anonymous tipster passed us a link to this website, which Lexus is using to invite folks to an event at the Detroit show where the new RC F coupe will be revealed. But that same tipster also sent us a scan of the mailed-out invitation, shown at right (click the image to enlarge), which clearly states that the RC F will be powered by a 460-horsepower V8. The invite also says Lexus will show its 2015 RC 350 coupe in Detroit, following its debut at the Tokyo Motor Show in November.
We cannot totally verify the authenticity of the scanned invitation, but with a corresponding website live on the web, it all looks pretty legit to us. Stay tuned for more details closer to the RC F's debut in January.