2013 Audi S4 on 2040-cars

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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.

MTM Audi RS6 Clubsport might be overkill for grocery shopping

As automotive journalists, we're biologically wired to love station wagons. We really don't have a choice. And while we prefer brown, diesel-powered, manual-transmissioned long-roofs, we suppose a 750-horsepower Audi RS6 Avant would be just dandy. This is the MTM RS6 Clubsport, and as we mentioned, it's very powerful. That's thanks to a modified version of Audi's critically acclaimed 4.0-liter, twin-turbocharged V8. While 750 hp out of just 4.0 liters is impressive, 697 pound-feet of torque is an equally big accomplishment. And if that's not enough, MTM has managed to shave nearly 200 pounds of body fat from the big wagon. Needless to say, it's very, very fast. MTM has displayed a degree of aesthetic restraint, eschewing the gaudy body kit favored by some other tuners and simply opting for a questionable paint job. The 21-inch wheels look good, although with the smattering of rubber around them, we wouldn't bet on a comfortable ride. As for the cabin, well, MTM got a bit out of hand. It's very, very orange. The seats are essentially carbon-fiber shells lined with bits of orange, leather-wrapped padding here and there. Orange, quilted-leather in the door panels, center armrest and on cushions on the side of the center console – a nice touch we wish more automakers would add to their performance cars – contrasts nicely with the black plastics and carbon fiber found on the rest of the dash and center console. That said, we aren't crazy about space for passengers, thanks to the large cage that's there to boost structural stiffness. We have a full gallery of photos of the MTM RS6 Clubsport direct from Geneva. Trust us, you'll want to have a look at this one. Related Video:

2017 Audi A4 Prestige is round 2 of our long-term test

The first of our long-term Audi sampler platter, a Glacier White metallic 2017 A4 Premium Plus, has already departed from the fleet. Replacing that mid-grade model is a range-topping 2017 Audi A4 Prestige wrapped in a beautiful shade of Moonlight Blue metallic paint. At first glance, aside from the color, not much appears to be different between the two models. Here's what's changed. What we got The Prestige trim starts at $46,850 and sits atop the A4 range. The only way to go up is to step into the new S4, but that dish comes later. The A4 Prestige comes with all of the expected trimmings - a 2.0-liter turbocharged inline four making 252 horsepower and 273 lb-ft of torque, a seven-speed dual-clutch transmission, and Quattro all-wheel drive - along with most of the features from the Premium Plus package such as LED headlights and a 3D Bang & Olufsen sound system. Prestige extras include parking sensors with a surround view camera, a full-color heads-up display, LED interior lighting, and bits from the technology package such as Audi virtual cockpit, MMI navigation, and extra parking sensors. The technology package was a $3,250 option on our first A4. The biggest difference between the two models is the availability of certain options. Only the Prestige can be equipped with the warm weather package, the adaptive dampening suspension, and the driver assistance package with adaptive cruise control and active lane assist. We passed on these in order to keep things similar to our long-term Jaguar XE. We added 19-inch wheels with 245/35ZR19 Hankook Ventus S1 evo2 summer tires because Michigan isn't cold and desolate all year round. That said, we did check the box for the cold weather package with heated seats at all four corners and a heated steering wheel. The final option was the sport package that adds a black headliner, sharper suspension, and four-way power lumbar support. All in, the new A4 rings up at $51,575, just less than $2,000 more than the $49,825 Premium Plus, as the latter was equipped with the now-unavailable $1,100 First Edition package. What we skipped We decided once again to skip the manual transmission. While it may inject a little more fun into an already enthusiastic car, few shoppers actually opt for a three-pedal setup. With that in mind, we chose the excellent seven-speed dual-clutch transmission, a no-cost option. We also decided to keep things simple and passed on the driver's assistance package.