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Next Audi Q7 to debut with electric turbocharger?

For years, the concept of an electric turbocharger was essentially a joke sold on eBay to boost power in your slammed Civic, but in the last five years it has moved from an idea on a piece of paper to a feasible reality. Audi has already toyed with a showcase of the cutting-edge tech in road cars with the RS5 TDI concept. Now, reports suggest an electric turbo may make it to the streets as soon as next year in the next-gen Q7 (spy shot pictured above).
"I can confirm we are working on the development of the e-boost definitely," said Ulrich Weiss, Audi's diesel engine boss, to Australia-based Drive. He didn't give an exact timeframe but hinted at sometime next year, possibly in the Q7. He also suggested the chance of an RS-branded diesel model in the vein of the RS5 TDI concept on the horizon, as well.
This tech isn't entirely new for the folks in Ingolstadt. Audi's R18 endurance racer already uses such a system to capture waste heat from the engine, converting it to electric power to further power the hybrid car. The RS5 TDI concept employs a similar idea with a 3.0-liter, twin-turbocharged V6 with an electric supercharger to make up for the turbo lag. It's able to pump out 385 horsepower and 553 pound-feet of torque and allegedly sprint to 62 miles per hour in four seconds.

Audi SQ7 TDI packs 48V electric compressor, 664 lb-ft

Take a look at the new Audi SQ7 TDI. It's the first time Audi has done an S performance version of its flagship sport-ute, and packs under the hood a 4.0-liter V8 turbo diesel engine mated to an eight-speed automatic and all-wheel drive. It produces a potent 435 horsepower, and an absolutely bonkers 664 pound-feet of torque. The Audi SQ7 TDI produces a massive 664 lb-ft of torque. Impressive as it is, though, that doesn't even tell the full story. That's enough to make us forget it wasn't there in Geneva. It's also more torque than just about anything the Volkswagen Group makes – short of the Bentley Mulsanne Speed and the new Bugatti Chiron. Not even the Lamborghini Aventador SV or Bentley Continental GT Speed can touch that torque figure. Nor can competition like the Porsche Cayenne S Diesel (with its 385 hp and 627 lb-ft) or the BMW X5 M50d (381 hp and 546 lb-ft). It may not surpass the old twelve-cylinder Q7 6.0 TDI (with its 493 hp and 738 lb-ft), but still trounces the VW Touareg V10 TDI (309 hp and 553 lb-ft) – which was strong enough to tow a jet airplane, while the new SQ7 is fast enough to out-drag one (as you can see from the video below). Impressive as it is, though, that headline-grabbing torque figure doesn't tell the full story. To get there, Audi employed two conventional, sequential turbochargers and a third compressor that – in an industry first that's been a long time coming – is powered electrically. The engineers in Ingolstadt installed a beefier 48-volt electric subsystem to power the electric compressor (among other systems) and its latest valvetrain tech for the first time in a diesel. The result, Audi says, is a lack of any perceptible turbo lag – and a 0-62 time quoted at 4.8 seconds, en route to the typical electronically limited top speed of 155 miles per hour. As if that weren't enough, Audi also equipped the SQ7 TDI with an optional suspension package that coordinates the activities of three systems. There's a differential, a four-wheel steering system, and a clever electromechanical roll stabilization system that employs an electric motor (made possible once again by that 48-volt system) and a three-stage planetary gearbox to keep it all level and improve ride quality over rough surfaces. The sum total is an impressive technological tour de force on Audi's part, but one that we may just have to admire from afar.

2016 Audi S6 and S7 First Drive

Audi paired the S6 and S7 for the purposes of this test in Southern California, but these are rather disparate cars. A three-box sedan, even a sporty one like this S6, is for a specific kind of customer. A sleek, four-door hatchback like the S7, on the other hand, is for a different kind of person. These two people might not be as different as Dr. Jekyll and Mr. Hyde, but at the very least the S7 is the S6's lothario neighbor – the one who's always got a glass of scotch in one hand and a chambermaid in the other. A day spent in the canyons around Los Angeles proves there's a big difference between these cars. First, though, let's discuss their similarities. The S6 and the S7 get the same design overhaul we detailed in our piece on the 2016 Audi A6, namely the edge work done on the grille, bumpers, headlights, and taillights. Additionally, they get Audi's new MMI system – the brand's next step in infotainment. A day spent in the canyons proves there's a big difference between these cars. Changes exclusive to these S models include flat-bottomed steering wheels with model badges at the base of the center spoke, and aluminum-finish shift paddles. The pedals and footrest get the aluminum look as well. There's also a new shift lever, and a revised design for the Quattro badge. New seat and surface treatments join the options list, such as Beaufort Walnut inlays and Valcona leather seats in Cedar Brown. The S7 has a new Arras Red interior option as part of its design selection palette, but the striking addition there is the carbon fiber inlay it comes with, which is interwoven with a red thread. You lean in really, really close and see that scarlet yarn, and the cockpit immediately feels more special. It's the kind of beautiful subtlety you expect from Audi, and the result is a scrumptious cabin. The twin-turbo, 4.0-liter V8 gets 30 more horses, topping out at 450 horsepower. Torque remains the same at 406-pound-feet, but fuel economy increases ever so slightly to 18 miles per gallon in the city, 27 mpg highway, and 21 mpg combined. The S6 makes a meal of curves, but it does give away a hint of the effort. It seems that a fair number of buyers wanted S vehicles without the whole suite of go-fast bits; they liked having the "S" on their chests, they didn't need all of the superpowers. Thus, Audi took the Quattro sport differential and dynamic steering off the standard menu, and bundled it with the sport exhaust to create the now-optional Sport Package.