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Lexus to use BMW 3.0-liter straight-six in next-gen IS sedan?

Here's a rumor so wild it needs a U.S. Fish and Wildlife permit. Japan's Best Car magazine reports that the next-generation Lexus IS will offer BMW's B58 3.0-liter inline-six as one of four powertrain options. That's the same engine found in the new Toyota Supra with 335 horsepower and 365 pound-feet of torque. What's more, the fourth-gen IS will resurrect the IS F model gone AWOL during the current third generation, and do it with the twin-turbo V6 from the Lexus LS 500. The current TTV6 makes the same 416 hp in the LS 500 as the 5.0-liter V8 did in the first Lexus IS F 12 years ago. According to the magazine, the other engine options would be Toyota's 2.0-liter turbocharged four-cylinder, a 2.5-liter for a hybrid model, and a 2.4-liter turbo. We don't know where that last engine fits in. BMW doesn't make a 2.4-liter, and Toyota appears to have retired all of its 2.4-liter applications. Ignoring that, the 3.0-liter straight-six looks like it would replace the current 3.5-liter V6 rated at 311 hp and 280 lb-ft. This wouldn't be the first time the Supra's engine has been ported to the IS. Lexus mavens will remember that two years after the introduction of the original IS in 1998, Lexus put the Supra's 2JZ 3.0-liter straight-six engine in the IS 300 — without the turbochargers, thank you. But Best Car's prediction would have zero relation to history. Those were both Toyota engines back in 2000, and even ignoring the power differential, the IS didn't compete with the Supra. Putting BMW's 3.0-liter in the Z4 and the Supra works because they are the same car. And again, even ignoring the power differential, the more powerful Z4 doesn't compete with the Supra. Best Car's scenario has BMW selling one of its best engines for use in a direct competitor to the 3 Series. Lexus would need to design an engine bay long enough to swallow an inline-six, not a bread-and-butter engine for the brand, yet still be sensible for three more compact powerplants. Then, assuming BMW and Toyota made the same deal as with the Z4 and Supra, the Lexus would be down by a healthy double-digit horsepower margin on its German foe. The new Supra gives up 47 hp to the roadster. Where's the upside? It's said the trim sedan will stay about the same size, on a wheelbase roughly four centimeters longer, but lose a substantial chunk of weight.

New Toyota Supra may get a twin-turbo Lexus V6

We've heard endless rumors that a successor to the much loved and much missed Toyota Supra is in the works. Toyota hasn't done much to deny these conversations. On the contrary, the FT-1 concept from two years ago and the partnership with BMW have only fueled the fire. Now, talk of a new Lexus engine has led to speculation about the supposed Supra's powertrain. To be clear, this is mostly heresay. Few things have actually been confirmed, but based on what we know a few conclusions can be drawn. We know that BMW and Toyota are working on a joint product. We've seen mules testing out in the wild. In BMW guise, the possibly Austrian-built car will more than likely powered by turbocharged inline four and six-cylinder engines. Unless Toyota wants to use Bimmer power, they'll need to shoehorn one of their own under the hood. That leads us to this rumor of a twin-turbocharged V6 that will presumably power the new Lexus GS and LS. Japanese automotive publication Mag-X first reported on this engine. It was then picked up by YouWheel and Car Keys. Mag-X cites Toyota insiders and even gives an engine code, 943F. This engine allegedly will make more than 400 horsepower and more than 300 lb-ft of torque. While unconfirmed, this makes sense for Lexus. Nearly every luxury competitor has a six-cylinder engine with forced induction. While Toyota has previously had turbocharged inline-sixes, they've never produced a factory turbo V6. Every automaker is downsizing engines in an effort to meet fuel economy and emissions regulations. Toyota and Lexus will follow suit. Taking that V6 and tuning it for a performance application is a solid, if unverified, possibility. Related Video:

Stand out in the parking lot | 2017 Lexus NX 200t F-Sport Quick Spin

Timing is a funny thing. As I'm writing this mini-review of the Lexus NX 200t, which has been out for several years and used the brand's first turbocharged engine in America, a newly-revised NX just debuted in China. It doesn't have much bearing on my thoughts about the CUV, but it does go to show the growing importance of China for luxury manufacturers like Lexus and Mercedes-Benz. It's been almost three years since we drove the NX 200t for the first time. Back then, our reviewer was impressed by how different it felt from the RAV4 – the two vehicles share a platform, although Lexus claims 90 percent of the NX is distinct from its Toyota cousin. The biggest differences are styling and, more important, the powertrain. With turbocharging going very mainstream in the intervening years, how does the NX200t hold up? I spent a week in an F-Sport trim in a striking orange color to find out for myself. It took a little while for me to warm up to the powertrain. Even in Sport mode, things seem ... well, they seem a little sluggish. The NX has a funny way of expressing its slightly more than adequate horsepower and torque by requiring a hefty punt to spool up the turbo and get things moving along. Normal drive mode could pass for an economy setting. Back in 2014 when this thing was new, it was clear that the RAV4 connection doesn't matter as much as we, as enthusiasts, would think. It's easy for us to fixate on what vehicle is related to what platform, and which way its engine sits. And that's good! We need to do that. But Lexus determined that they didn't need it to sit on a rear-drive sportscar platform because of course not! It's a little crossover. From a packaging standpoint, that'd be idiotic, and from a marketing standpoint likewise. Not to say that buyers of the NX 200t aren't discerning. But I think their priorities and desires probably align with what Lexus decided to produce. This is good and proper. Also, it beats the heck out of a RAV4. I love the seats. Every body is different, sure. But these seats are completely spot on for what my body needs. They're sporty-looking without resorting to immense bolsters that pinch the torso, and they're very supportive. I wouldn't say they're the best seat's I've tried out of the hundreds of cars I've driven over the years, but they're probably the best small crossover seats I can recall. To put it in different terms, on some long road trips you need to stop just to stretch – that's not the case here.