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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.

2021 Lexus IS First Drive | A model remodel

The Lexus IS has now been with us for more than two decades. First introduced in 1999, it celebrated its 21st birthday this year and, to mark the occasion, Lexus hit the compact sedan with a significant overhaul, including a revamped powertrain lineup, an updated interior, and a much-needed tech update in an attempt to keep the sporty four-door relevant in a market that craves crossovers and SUVs. So, first things first: The 2021 Lexus IS is not actually new. In fact, Lexus still refers to it as a third-generation car internally, despite the “redesign” and repositioning for 2021, which is ultimately more about the products elsewhere in the Lexus lineup, rather than the IS itself. WeÂ’ll come back to that. Unveiled in June, the 2021 IS model range has been pared down to just two models, the IS 300 and IS 350 F-Sport. The highlight of the standard equipment sheet is an 8-inch touchscreen that's nearly 5.5 inches closer to the driver than the outgoing modelÂ’s. A 10.3-inch touchscreen is available as an upgrade, and perhaps most notably, the IS is finally available with Apple CarPlay and Android Auto integration suites. Despite the common name and number, however, the IS 300 is in fact offered with two very different engines depending on how many wheels are driven. Power for the rear-wheel-drive IS 300 comes from a 2.0-liter turbocharged inline-four, which develops 241 horsepower and 258 pound-feet of torque. It's bolted to an eight-speed automatic transmission. With the IS 300 AWD (pictured below), all-wheel drive is paired with a 3.5-liter naturally aspirated V6 good for 260 hp and 236 lb-ft of torque, and a six-speed automatic transmission. Nothing confusing about that, is there? 2021_Lexus_IS_300_AWD_Blue_004 View 9 Photos Thankfully, things are a bit more normal with the IS 350 F Sport. Its high-output V6 is alive and well, with its naturally aspirated displacement of 3.5 liters and an output of 311 horses and 280 pound-feet of twist. It's the same engine regardless of drivetrain, though rear-wheel drive is still tied to the eight-speed automatic while all-wheel drive gets the six-speed. The quickest variant is the RWD model, which will crack off a run to 60 mph in 5.6 seconds. The AWD variant is intended to be an all-weather option, not a performance enhancer. The observant reader will note that we keep referring to the IS 350 F Sport, rather than simply the IS 350.

Flower petal-covered Lexus UX 250h wins art car competition

We confess not to know the first thing about art, so perhaps we don't quite get why anyone would want to cover every inch of a Lexus UX250h with flower petals. It's not as if it's an easy thing to do. But not only has someone done it, the resulting car has actually won an art car competition sponsored by the luxury marque. Without the flower petals, the Lexus UX is actually a pretty sharp looking compact premium crossover. It wears the Lexus design language with its many crsip creases and angled lines better than most of its fellow L-badgers. In fact, we can think of others whose sheetmetal would look better under a veil of paper blossoms. The winning entry, created by a design outfit called Clap Studio out of Valencia, Spain, beat five other Lexus UX art cars to win the contest. It took artists Jordi Iranzo and Angela Montagud a month to attach the thousands of paper cutouts to the body. "Our concept is a Zen garden that represents a state of mind: calm, pure consciousness,” they explained. The duo also point out that the car looks very different depending on the light, as the petals reflect and cast shadows in varying directions. Other entrants included more traditional art cars, with elaborate paint jobs, textures, or random objects affixed to them. At least one appeared to be covered in actual, not abstract, flora. Only the winning proposal was actually built, it seems, so in real life only one UX was defiled (or beautified, depending on your taste). Again, we don't know much about art. Related video: