2008 Audi S4 Base Sedan 4-door 4.2l on 2040-cars

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Audi A7 Sportback H-Tron Quattro packs plug-in hydrogen powertrain

If you think a plug-in diesel hybrid is an expensive proposition, just wait until you hear details about the just-revealed Audi A7 Sportback H-Tron Quattro. The "H" in H-Tron, as you might guess, stands for hydrogen, so say hello to a new concept that combines a plug-in battery system with a hydrogen fuel cell. Yeah, exactly. Let's start with the numbers. On the plug-in side, the new H-Tron has an 8.8-kWh lithium-ion battery that can power the car for up to 31 miles on battery power. With electric motors on both axles – it's a Quattro, after all, but a through-the-road hybrid with electronic torque distribution management – the A7 H-Tron uses a hydrogen fuel cell and four (!) H2 tanks to offer about 62 miles per gallon equivalent. Audi says the overall fuel cell stack efficiency is "as high as 60 percent" while the electric motors operate at 95 percent efficiency. Efficiently turning all of that electricity into movement means the A7 Sportback H-Tron Quattro has a total power output of 398.3 pound-feet of torque. The 4,299-pound concept can allegedly go from 0-62 miles per hour in 7.9 seconds and has a top speed of 112 mph. The car's total range is 311 miles. The A7 H-Tron is not the first plug-in hydrogen vehicle concept. That title goes to the Ford HySeries Edge. Mazda also considered putting a hydrogen range extender in the Mazda5 plug-in van. The Audi A7 Sportback h-tron quattro It sprints from 0 to 100 km/h (62.1 mi) in 7.9 seconds and on to a top speed of 180 km/h (111.8 mph). It covers over 500 kilometers (310.7 mi) on one tank of fuel – and its exhaust emits nothing more than a few drops of water: The A7 Sportback h-tron quattro, which Audi is unveiling at the Los Angeles Auto Show 2014, uses a powerful, sporty electric drive with a fuel cell as its energy source that operates in combination with a hybrid battery and an additional electric motor in the rear. The overall electrical system power of 170 kW is transferred to both the front and the rear wheels. This drive configuration makes the emission-free Audi A7 Sportback* a quattro through and through – a new departure in fuel cell cars. "The A7 Sportback h-tron quattro is a genuine Audi – at once sporty and efficient. Conceived as an e-quattro, its two electric motors drive all four wheels," explained Prof. Dr. Ulrich Hackenberg, Member of the Board of Management for Technical Development at Audi. "The h-tron concept car shows that we have mastered fuel cell technology.

Audi reveals facelifted A7 and S7 in Europe [w/videos]

Audi has revealed the nip/tuck and stylistic upgrades for the A7 that we got clues to in spy shots from back in January. The single-frame grille has been subtly reworked along with the lower front fascia and headlilghts. Those bulbs are underlined by a new design for the LED DRLs, and - in Europe - they can be had with Matrix Beam LEDs that come with dynamic turn signals. Out back is a tweaked bumper, as well as new exhaust tips and taillights with an LED pattern that mimics the front lights.
Cockpit inhabitants get new surface treatments like the aluminum and Beaufort walnut inlays, Valcona leather and five possible colors for the seats. The company's MMI Navigation Plus with MMI Touch is fitted with an Nvidia chip for faster graphics processing, and LTE-enabled internet connectivity is standard.
Up front, the 3.0-liter bi-turbo TDI gets a power boost to 320 horsepower and is attached to an eight-speed transmission; a seven-speed S tronic transmission is paired to the rest of the line. The revised 3.0-liter V6 TDI recently discussed at the Vienna Motor Symposium also joins the lineup, here offered in both the 272-hp and 218-hp variants, that latter "ultra" version said to return 50 US miles per gallon.

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: