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Porsche reportedly working on new turbocharged flat-four boxer engine?

These days, we've seen just about every automaker dropping cylinders in an effort to appease tightening fuel economy and emission standards - and Porsche is no exception. Nearly three years after introducing an all-new V6 powerplant under the front hood of its Panamera sedan (launched with a range of V8 engines) comes word that Porsche is working on an all-new turbocharged flat-four boxer to replace the flat-six engines mid-mounted in its Cayman and Boxster models.
Specifics have yet to be learned, but reports say the engine is a derivative of the current 3.8-liter six (shown above) found under the rear decklid of the Carrera S, yet with two fewer cylinders. Fitted with a turbocharger, direct-injection and the automaker's VarioCam Plus, the new all-aluminum 2.5-liter flat-four will likely develop upwards of 350 horsepower and 360 pound-feet of torque. Redline should be about 7,500 rpm. Initial indications say that Porsche will only offer the new engine with its seven-speed PDK dual-clutch automatic, tuned to take advantage of the low-end torque, but a traditional six-speed manual gearbox has not been ruled out. Despite the loss of two cylinders, enthusiasts will likely embrace the new engine as it promises to be lighter, more fuel efficient and more powerful than the 2.7-liter and 3.4-liter sixes in the Cayman/Boxster today.
Even though Porsche has been using Volkswagen Group engines for years (e.g., Cayenne V6, Cayenne Diesel and upcoming Macan), all indications are that the new flat-four will not be shared. Instead, it will be kept in-house for the automaker's sports cars and possible future fitment in an entry-level 911.

VW adding particulate filters to gas engines

Volkswagen is working hard to overcome the PR disaster that is its diesel emissions scandal, and part of its efforts is focusing, weirdly, on petrol engines. Starting in June 2017, the embattled German automaker will add particulate filters to the gas-powered Volkswagen Tiguan and Audi A5. The change will eventually impact nearly every direct-injected gas engine the VW Group makes. Audi? Particulate filter. Seat? Particulate filter. Even Bentley is going to get the tech, all in a bid to reduce soot emissions by 90 percent. In fact, by 2022 VAG expects 7 million of its vehicles to boast the emissions-cleaning tech, which has long been a fixture on diesel engines. "Following increases in efficiency and lower CO2 output, we are now bringing about a sustained reduction in the emission levels of our modern petrol engines by fitting particulate filters as standard," Volkswagen Group research and design boss Dr. Ulrich Eichhorn said in a statement. "In the future, all models will be equipped with the latest and most efficient SCR catalytic converter technology." VW's initial rollout focuses on the 1.4-liter, turbocharged Tiguan and the 2.0-liter, turbocharged A5. Considering the popularity of the 2.0-liter across the VW range, we'd expect it's only a matter of time before VW expands its particulate filters tech to additional gas-powered vehicles. Related Video:

2015 Porsche 918 Spyder: Touring the factory

Willy Wonka granted just five lucky Golden Ticket holders access to his incredible chocolate factory, yet we consider ourselves just as fortunate, as Porsche invited us to be among the first of just four American journalists to see behind the closed doors of its 918 Spyder assembly plant in Zuffenhausen, Germany. Of course, there were no Oompa Loompas or flowing chocolate rivers, but the vast white hall tasked with producing only 918 examples of the automaker's limited-production flagship revealed details that make Wonka's Golden Egg sorting room seem rather mundane in comparison. Unlike a traditional automobile manufacturing plant, which often encompass all processes of making a vehicle (e.g., stamping steel panels, welding components and painting), the 918 Spyder is built in an assembly plant. This means that hundreds of already manufactured parts, each crafted by Porsche offsite suppliers, are brought under one roof to be assembled into a perfectly finished product that is much sweeter – and far more expensive – than any candy delicacy. Our tour guide was Michael Drolshagen, Porsche's Director of Production, Logistics and Quality - a walking encyclopedia when it comes to the engineering and assembly of the 918 Spyder. Drolshagen generously offered us unrestricted access to walk among the factory's 110 workers – and a couple-dozen vehicles in process – to photograph everything. This is a story best told with pictures, so we've put together a raft of our best images in a high-resolution gallery and captioned each with a detailed description. If you've still got questions, please voice them in Comments section and we'll do our best to answer.