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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.

BMW-Toyota partnership to spawn hybrid supercar

BMW and Toyota inked a partnership some time ago to develop green technology, and while we were excited by the idea of a reborn Supra with BMW's carbon fiber reinforced plastic slashing the curb weight or an ultra-efficient, hybridized 1 Series, the joint efforts have been rather limited. That's set to change, though, according to a report from Australia.
Motoring reports that the partners have come to terms on a sports car. And not just any sports car, but a lightweight, hybridized model, with a six-figure price tag. Lending a bit of street cred to that idea is the site's claim that Toyota is currently carrying out durability testing on the BMW i8. According to the site, the new model will slot into the spot left by the Lexus LFA, although based on the language used, it's unclear if this is the Tokyo-bound vehicle we mentioned several months ago.
Details on this potential car are limited, although Motoring claims it will use a Toyota hybrid system mated up to a BMW gas engine - likely the 4.4-liter, twin-turbo V8 found in the M5 and M6. That sounds pretty amazing to us, but we'd still advise taking this with a grain of salt. What would you like to see out of a joint-venture supercar from Toyota and BMW? Let us know in Comments, and have your say on the prospects of a hybridized, twin-turbocharged V8.

2019 Lexus GX 460 Drivers' Notes Review | An ancient, yet luxurious SUV

The 2019 Lexus GX 460 is an old-school SUV with luxury draped all over it. Body-on-frame SUVs are the exception these days, as unibody crossovers lead the way forward. There are plenty of great reasons for this, but the GX marches on as a unabashedly truck-like SUV. Nothing about the price screams truck, though. At $70,840 as-tested, anybody who buys a new GX 460 is going to be left with a sizable hole in their wallet. However, it’s not without a bevy of luxury features. Being the high-zoot “Luxury” trim level, ours comes standard with an adaptive suspension, semi-aniline leather interior, a power-folding third row, mahogany wood accents and three-zone climate control. That said, Lexus still managed to tack on a decent number of options. A $2,340 Driver Support package added the Mark Levinson audio system and a suite of driver assistance systems. Our tester also had a $1,970 rear seat entertainment system and a $1,950 Sport Design Package. The package includes 18-inch gunmetal wheels, heated second-row captainÂ’s chairs and a sizable list of exterior changes like front and rear bumper spoilers and scarlet taillights. The powertrain is also stuck in a older time period. Whereas most large crossovers now use downsized turbocharged engines, this Lexus sticks with a 4.6-liter V8 good for ... wait for it ... 301 horsepower. The V6-powered ES 350 makes 302. Worse, the GX gets poor fuel economy and doesnÂ’t exactly rocket up to speed with much excitement, either. At least it's proven from a reliability standpoint. Editor-in-Chief Greg Migliore: We try to talk about a specific element of the vehicles we test in Drivers' Notes, but indulge me today. IÂ’m going to talk about the Lexus GX 460Â’s ethos. By that I mean itÂ’s an old-school SUV that looks and feels the part. Wrapped in LexusÂ’ sharp, spindly styling, itÂ’s classy yet also kind of hulking. The steering is light and the vague brakes have little bite at first and then a lot as the pedal travel increases, making for challenging inputs for the driver. Still, I like it. The GX 460 captures the ethos of an old-school SUV perfectly. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Senior Editor, Green, John Beltz Snyder: For a three-row SUV, the GX feels pretty small inside. The second row is decent, but I know Greg had to do a little moving of seats in order to fit a rear-facing child seat back there.