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Audi R8, Lamborghini Huracan could get twin-charged five-cylinder

Engine downsizing and forced induction are some of the biggest trends in automotive powertrains today because. They offer the chance to reduce emissions and boost fuel economy, while possibly maintaining power. The shift is already happening to performance cars with turbocharged four-cylinders finding their way into the Ford Mustang, Chevrolet Camaro, and future Porsches. Now, there are rumblings of a tiny chance for a similar change coming for the Lamborghini Huracan and Audi R8. Why the new powertrain? China. While the market there might have slowing growth, it's still a major country for auto sales. The annual taxes on cars there also happen to be based on engine displacement, and there's a 40 percent rate on those over 4.0-liters, according to Car and Driver. The obvious answer to this conundrum is to build a smaller displacement, forced induction engine for the R8 and Huracan. Car and Driver points to the new turbocharged and electrically supercharged, 2.5-liter inline five-cylinder from the recent Audi TT Clubsport Turbo concept as a possible solution. Audi's e-turbo technology runs off a 48-volt electrical system and lithium-ion battery to produce a total of 600 horsepower and 479 pound-feet of torque in the prototype. With this mill, horsepower would barely shrink compared to the R8 V10 Plus and Lambo, but it actually makes more peak torque than their 5.2-liter V10s. While this is all theoretically feasible, take the possibility with a big grain of salt for now. According to Car and Driver, Quattro GmbH's Stephan Reil says that there's no work currently underway to fit the twin-charged five-cylinder, "but it has been talked about." That means such a vehicle is likely years away, if ever. In the meantime, a diesel version of the e-turbo setup is on the way the in the SQ7. Related Video:

Here's how to follow this weekend's 24 Hours of Le Mans

In the pantheon of motorsports, the 24 Hours of Le Mans stands as one of the great endurance challenges to man and machine. This year's event in France already looks to be one for the ages with Porsche setting record-breaking times in practice and the competition debut of Nissan's front-engine, hybrid racer. Thankfully, there's a massive list of ways to follow this automotive attraction. Reilly Brennan, the Executive Director of the Revs Automotive Research Program at Stanford University, and a friend of Autoblog, has once again assembled a helpful couch-kit to organize many of the options. Unfortunately, the old-school way of just turning on the television might be the most frustrating way to watch Le Mans this year. Fox Sports 1 and 2 are carrying about half the race, but the coverage bounces between them seemingly at random. The broadcast begins on Fox Sports 2 at 8:30 AM Eastern ahead of the 9:00 AM start and lasts there until 12:00 PM. Things don't pick up again until 7:00 PM Eastern on Fox Sports 1 for an hour, and the channels swap back and forth more from there. The Fox Sports Go streaming app offers more, but even it stops showing the race a few times. Thankfully, streaming Le Mans is easy. If you can't dedicate 24-hours on the couch, Radio Le Mans lets you listen to audio commentary anywhere with some of the best announcers in the biz. The Automobile Club de l'Ouest, the governing body for the race, also offers an official video stream in an app for $9.99. For a really low-tech solution, the official Twitter is another choice. Brennan is keeping his list updated with coverage changes. You can also check out and download the spotter's guide (from Nissan) in the gallery above. Enjoy this year's race. If you miss anything, don't worry; expect a full report from Autoblog. In fact, editor-in-chief Mike Austin is attending Le Mans this year, so follow him on Twitter for on-the-fly impressions. Featured Gallery 2015 24 Hours of Le Mans Spotter's Guide News Source: Reilly BrennanImage Credit: Nissan Motorsports Audi Nissan Porsche Toyota Hybrid Racing Vehicles

2015 Audi S3 Sedan

For the last few years, Audi has been publicly toying with building a successor to its Ur-Quattro, a model still glowing in a gritty patina of motorsports glory decades after it left the scene. If anything, the rally car's halo has burned brighter as Audi has matured into a world luxury superpower. Since 2010, the German automaker has shown two different concept cars that attempted to re-bottle the legend's lightning, and it's still trying to figure out whether to market a production model. Despite that conundrum (and not to take anything away from the seminal Ur-Quattro), it's easy to argue that there are two other cars much more important to Audi's rise from its '80s ashes: the original TT and the B5-generation A4 and its high-performance variants.
The TT thrust Audi into the vanguard of automotive styling while firmly establishing the Volkswagen Group as masters of platform development (the same basic architecture and powertrain guts were employed in a dizzying array of models, from the Golf, Jetta and New Beetle to a number of Škoda products). This unprecedented, flexible building-block approach to new model development has since become the standard of the industry.
In the case of its B5 cars, the A4, S4 and RS4 put Audi back on the radar of rival German automakers, and more importantly, they grew the Four Rings' sales by leaps and bounds while reminding the world that all-wheel drive needn't only benefit hardcore performance cars and utility vehicles. Fast-forward to today, and the A4 has established itself as the bedrock of Audi's lineup, but it's also grown over its four generations to become substantially larger, heavier and costlier than the model that debuted back in 1996 America. That's created a vacuum at the bottom of the range that the company has inadequately addressed - until now.