2008 Audi A4 2.0t Convertible Quattro on 2040-cars

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Audi debuts all-new R18 E-Tron Quattro with novel secondary hybrid system

This is the new Audi R18. It looks like the Bond villain of race cars (it has red running lamps), and if Audi's past is any indication, it'll prove difficult to beat in the LMP1 class of the 2014 World Endurance Championship.
The car's full name is the Audi R18 E-Tron Quattro, just like last year's car. Also like last year's car, the new R18 draws its power from a V6 turbodiesel, which powers its rear wheels, and Audi's E-Tron hybrid system, which runs its front axle. Unlike last year's car, though, this R18 has a secondary hybrid system. Audi has fitted the V6 with an electric turbocharger and figured out how to capture waste heat generated when the engine reaches its boost limit. That power can then be stored and fed back into either the turbo or the front axle's hybrid system under acceleration.
There are a number of changes to the body on the new car, forced in large part by series regulation changes. The car is narrower, particularly at the front, but it's also taller. The front end is set off by a new wing, as part of a new WEC regulation. Audi seems quite pleased about this, citing an improvement in front-end downforce and a reduction in cost. Like Formula One, the WEC contenders now have to contend with a ban on the so-called blown diffuser, which forced exhaust gases over the diffuser, creating downforce. That's necessitated some changes from Audi, although as we have no rear shots of the car, we can't tell you what it looks like.

2014 Audi RS7 [w/video]

Stunning Sportback Gets The Performance To Match
Saying the 2014 Audi RS7 Sportback is not as good as the not-for-North-America Audi RS6 Avant we recently tested is a bit like saying one more strip of crispy bacon would make our Waffle House All-Star Special breakfast even more special. The RS7 goes to ten while the RS6 goes to eleven, maybe, but they both rock our world. The RS7 is meant for the far wider buying audience worldwide, not just for western European family bombing runs, as with the RS6 Avant.
But, hey, this RS7 simply hurtles down the road in a singularly sexy way. And if you really want this bodystyle - and who could blame you? - the RS6 Avant doesn't really even matter anyway. After a full day on perfect dry and warm Swabian two-lanes driving this Audi very hard, we barely thought about it at all.

2013 Audi RS6 Avant [w/video]

Latest, Greatest Autobahn Bomber Will Not Be Denied - Except To Us
Back in 2008, I was fortunate enough to test the second-generation Audi RS6 Avant in southern France on the supremely well-sorted circuit at Le Castellet, a.k.a. Paul Ricard. I was thrown out there with the 572-horsepower bi-turbo 5.0-liter V10-equipped behemoth behind one of Audi's DTM pros and was convinced in short order that the flaming hippo in my hands was going to get the better of me on one or another of the track's tight esses. I made it out alive and invigorated, of course, but knew that that RS6 Avant was the heaviest that these thunderwagons should ever be allowed to get. At around 4,650 pounds with driver aboard, it was just way more lateral momentum at speed than any pilot needs on a track - or for that matter, on a favorite hot curving road.
Now it's time for the 2013 Audi RS6 Avant to lay us out with a flying scissor kick from the corner ropes. This version of the highway and byway marauder from Quattro GmbH is a decidedly greater piece of work than was the car I drove in 2008. This time, there will only be the Avant body configuration - no RS6 sedan - and, as with the previous generation, North America won't be at the receiving end when deliveries start at the end of July this year.