2000 Audi A4 Base Sedan 4-door 1.8l Quattro on 2040-cars

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2017 Audi S4 goes running naked through the Alps

Audi just launched its new A4 sedan barely more than two months ago, bringing with it a raft of improvements over the outgoing model. And you know what that means: A new S4 performance model is just around the corner. Fortunately, that's just what we have here in these latest spy shots, snapped completely undisguised. Spotted testing in the Alps, the new Audi S4 is closely based on the new A4 we've already seen, benefiting from all its enhancements and weight savings. Only it promises to be more potent. Where previous S4s packed V8 engines and the current (outgoing) model pressed a supercharged V6 into service, this new model is tipped to switch to a fresh turbocharged V6. Expect power to rise from 329 horsepower up to 340 or more, and with less weight to motivate, we can expect performance to improve markedly in the process. Along with a more powerful engine, the S4 clearly stands out visually from ordinary A4s with bigger intakes, upgraded rolling stock, quadruple exhausts, and more. We'll have to wait a little longer to find out all the sordid details, but from the look of it, we won't have to wait long. In fact, we'd be surprised if Ingolstadt didn't take the opportunity to unveil it at the Frankfurt Motor Show this month, so watch this space for more and scope out the photos in the gallery above in the meantime.

Mattias Ekstr?m unleashes bonkers 600-hp Audi S1 Supercar on World RX

Mattias Ekström doesn't need to prove anything. He's won the DTM title twice and before that the Swedish Touring Car Championship. But being a racing driver as he is, Ekström has been looking for new challenges. He's contested the Swedish Rally six times, the German Rally twice, he's driven in V8 Supercars and in NASCAR. He's even won the Race of Champions. Twice. Heck, we're surprised his long-time sponsor Red Bull hasn't let him try out one of its F1 cars. But this season it's on to a new challenge: the inaugural FIA World Rallycross Championship.
Ekström drove a Volkswagen Polo fielded by Marklund Motorsport in the Swedish rallycross round last season and came in second, but this year he's diving in head-first with his own team and his own car. His outfit EKS is hard at work preparing the new Audi S1 for competition in the World RX Championship, and will field two of them this season: one for Ekström and another for JWRC champion Pontus Tidemand.
Built to compete in the top category of the championship, the EKS Audi S1 Supercar will pack a 2.0-liter turbo four with 600 horsepower, all-wheel drive and a 0-60 time of 1.9 seconds. It's expected to make its debut late in May at the World RX of Great Britain where it will have to tangle with specially prepared versions of the Citroën DS3, Ford Fiesta ST and Peugeot 208 driven by the likes of Tanner Foust, Ken Block, Jacques Villeneuve and Petter Solberg. The sole North American round will be held in Trois-Rivières, Quebec, in early August, on the same circuit that once hosted Indy Lights, ALMS, Grand-Am, Can-Am and Trans-Am races.

Delphi thrilled with results from autonomous car's cross-country trip

In the first trip across the United States ever made by an autonomous car, engineers from Delphi Automotive were surprised to learn that, in some cases, their vehicle behaved a lot like a human driver. "The car was scared of tractor trailers," said Jeff Owens, the company's chief technology officer. "The car edged to the left just a little bit when it would pass trucks, and that was an interesting observation." Engineers made hundreds of notes throughout the drive, as the autonomous car covered 3,400 miles through 15 states en route to a showcase near the New York Auto Show. Overall, company officials said the car performed better than anticipated in a variety of road and weather conditions. In the course of the cross-country drive, drivers actually controlled the car only for about 50 miles, and those cases were limited to on-and-off ramps and the occasional construction zone where lanes were not marked or only sporadically marked. The purpose of the trip was to glean information on how the autonomous car worked in a real-world environment. Google and others have tested autonomous cars and autonomous features in select real-world environments before, but Delphi's adventure was the first to trek into a test with such varied challenges over a nine-day trip that began near the Golden Gate Bridge on March 22. There are some things the engineers have already learned, like the fact the camera systems had the occasional blip when the sun-angle was low. And there are some things to still be learned, as they pour over three terrabytes worth of data from cameras, radar and lidar sensors in the weeks ahead. "It's going to take us a couple weeks to digest all this," Owens said. "But we had all the data from tests. It was time to put this on the road." Built into an Audi SQ5, the vehicle was striking, if only for the fact it looked like a normal car. Many other autonomous vehicles have quirky sensors atop the roof or other features that make them stand out as experiments. Delphi arranged this one to look as much like a normal car as possible, right down to stowing an army of computers under cargo mats, so the rear contained as much trunk space as the production model. If a fellow motorist didn't know where to look -- or take the time to notice the person in the driver's seat didn't have their hands on the wheel -- there was no reason to suspect this was anything other than a regular car.