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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.

Watch Audi R8 give Birth to RS3

In the cold light of reality, it's a fairly dubious proposition to suggest that the Audi RS3 Sportback shares much of a mechanical relationship with an R8. One of them is supercar with a snorting V10 and lithe body, while the other is a still-capable hot hatch with roots lower in the brand's range. However, marketing doesn't necessarily have to sell real life, and Audi's advertisers are nailing the emotional pull of these two models in a spot called Birth. With dramatic music and a sci-fi aesthetic, the R8's V10 roars as the supercar stretches and deforms, and eventually the hot hatch gets plucked from its metallic loins. Regardless of how closely these two models are related, this commercial looks and sounds fantastic. With the US rumored to get the RS3 in sedan form at some point, hopefully we get a tweaked version of this ad.

Audi first to bring LTE to the car later this year

It appears Audi will be the first to market with in-car LTE service later this year. We knew that BMW was working on LTE integration last year with its ConnectedDrive, and we've been told that, by the end of 2015, most General Motors products will have it, but LTE can be ordered on the S3 Sportback (pictured) as soon as July. Other models in the A3 line-up will add the option in November.
Inserting an LTE-enabled SIM card into the Audi's MMI navigation will make the S3 a WLAN hotspot that can quickly shuffle high-definition content from the cloud to the cockpit. It will also bolster Audi Connect services like Google Earth, Facebook and Twitter, e-mail, and streaming internet radio.
We've been told that we'll be offered the LTE option when the 2015 A3 sedan gets here in the spring of 2014. Since the service requires you to provide a SIM card, we expect that costs and data caps will be a matter between you and the service provider; speaking of which, Audi hasn't announced yet who that provider will be on this side of the Atlantic. The press release below has more details.