2004 Lexus Is300 Sport Design on 2040-cars

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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.

Lexus IS 250 to get new turbo four?

"All show, no go." That's how I described the 2014 Lexus IS 250 F Sport that you see above, when I reviewed it back in November. Don't get me wrong, there's a lot to like about the new IS, but the 204-horsepower, 2.5-liter V6 in the IS 250 is not on that list. In my review, I suggested that Lexus ought to get on the bandwagon of offering a small-displacement, turbocharged, four-cylinder engine in its base IS (like its rivals), and now the folks at Motor Trend are furthering that discussion.
Lexus pulled the wraps off its new NX 200t crossover at the Beijing show recently, and it'll be the first vehicle in the company's lineup to use a brand-new - you guessed it - 2.0-liter turbo-four. With 238 horsepower and 258 pound-feet of torque on tap, that represents a healthy increase over the 204 hp and anemic 185 lb-ft currently being offered with the 2.5-liter V6, and we imagine the fuel economy gains will be rather significant, too. For comparison, the Lexus' four-pot power numbers are very close to the 240 hp and 255 lb-ft offered in the same-sized engine that BMW uses in the 328i.
Motor Trend also posits that Lexus may consider changing the base IS' name from 250 to 200, or perhaps 200t, to properly reflect the new engine's displacement. Of course, that's assuming Lexus doesn't pull a BMW or Mercedes-Benz, and no longer has its alphanumeric names properly reflect the size of the powerplant found underhood.

2020 Lexus RC F Track Edition First Drive Review | Not the hardcore machine we deserve

THERMAL, Calif. — It's been more than 10 years since Lexus launched its high-performance F models. Ten years. After a full decade you'd think Toyota's luxury division would have it figured out by now, but the 2020 Lexus RC F Track Edition isn't the hardcore machine we were hoping for. Maybe our expectations were too high. We saw its lackluster specs at the Detroit Auto Show in January, but you just never know until you get behind the wheel. And while there's a lot to like here — this is the most powerful and track-capable Lexus since the LFA supercar was launched in 2011 — it's quickly apparent that Lexus' engineers were held back from making the RC F Track Edition what they wanted to make. The RC F Track Edition uses the same naturally aspirated 5.0-liter V8 (2UR-GSE) that powered the IS F sedan in 2008 and the standard RC F since 2015. It's the engine Lexus also uses in the LC 500 coupe and the GS F sedan. The company's strict warrantability standards mean this engine is limited to 500 hp, said Yuuichi Tsurumoto, the chief engineer on the RC F Track Edition and the man responsible for all Lexus F models. So supercharging the engine was out of the question. Increasing the V8's displacement to 5.5-liters or more was explored, but then the RC F Track Edition would have been subject to a gas guzzler tax, and that too was deemed unacceptable. The frustration in Tsurumoto's voice was clear. And while the 5.0-liter's output has been increased slightly for 2020, up to 472 horsepower (+5) at 7,100 rpm and 395 pound-feet of torque (+6) at 4,800 rpm, the RC F Track Edition doesn't get any more power than the standard RC F. Both versions of the coupe also continue to use an Aisin-supplied eight-speed automatic, which is essentially unchanged. Lexus is only going to build "around 400" RC F Track Editions, and it will import just 50 into the United States. That's all. Just 50 cars. And they're going to cost $97,675 including a $1,025 destination fee. Who cares about a gas guzzler tax on such an extreme limited run of a $100,000 factory hot rod? In the age of 797-hp Redeyes and 640-hp Cadillacs, the 472-hp RC F Track Edition may not sound like it would be quick, but it is. With its new launch control and shorter 3.13:1 rear-end ratio, Lexus says it can sprint to 60 mph in 3.97 seconds. That's just a tenth or two off the performance of the LFA. Unfortunately, it's also only two tenths quicker than the standard RC F, which Lexus says now hits 60 mph in 4.2 seconds.