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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.

2014 Lexus CT shows new face on each side of the Pacific [w/video]

Earlier today, Lexus officially took the wraps off its 2014 CT 200h at the Guangzhou Motor Show, and now we've gotten a chance to inspect the updated hybrid hatchback right here at the LA Auto Show.
As expected, the most prominent change made to the CT's styling is the addition of Lexus' signature spindle grille. Additional changes include new wheel options and revised front and rear fascias, but our favorite update to the car is to the headlights, where there is no longer a gap in the middle of the LED running lights. The luxury hatchback has also received some changes to the cabin, including an updated instrument gauge cluster, a new fixed nav screen that replaces the previous folding unit and a freshened combination of cabin materials.
No changes have been made to the CT's hybrid powertrain, meaning the model will carry on with a 134-horsepower 1.8-liter Atkinson-cycle four-cylinder paired with a drive motor and an electronic continuously variable transmission. Fuel economy ratings likely won't stray too much from the 2013 model's 43 miles per gallon city and 40 mpg highway ratings.

2019 Lexus ES is first mass-produced car to replace side mirrors with cameras

Concept cars have been trying to replace side mirrors with cameras for decades, and now Lexus is actually going to do it on a production car. There's one important caveat though: It's only for Japan. First implemented for the recently redesigned (and recently reviewed) 2019 Lexus ES, the side mirrors are being replaced with small, aerodynamic camera stalks. Those small cameras tucked into the stalks provide a constant video feed to five-inch screens placed at the base of the car's A-pillars. The biggest reason manufacturers are pushing this kind of tech is to improve aerodynamics. Swapping those side mirrors out for something much smaller creates less drag, and ultimately, better fuel economy. Lexus says there are a couple other advantages for going digital here too. For one, the camera modules are able to resist the accumulation of raindrops and snow due to their design. There's also less wind noise since the mirrors cut through the air so well. This will become even more important as silent electric cars trickle their way onto the market. The actual visibility is supposed to be better as well. Lexus says that the view is "enhanced" when you activate a turn signal, and helps provide better rearward vision when put into reverse — think Honda LaneWatch, but way cooler. We won't be seeing this futuristic-looking side mirror technology in the U.S. for some time, because it's still not legal here. The technology is legal to use in Europe, but Lexus says it'll only be offered in Japan for the time being. Audi, though, will be bringing its side camera mirror technology to Europe by the end of the year with the E-Tron. There's still no release date on the electric SUV, but it might be the first to market with the tech on that continent. Audi wants to bring side mirror camera technology to the U.S. in its E-Tron, but the regulations still need to be changed to allow that here - the E-Tron is expected to be for sale in the U.S. sometime in 2019. Buyers in Japan will be able to scoop a Lexus ES with the tech this October. Related Video: