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Audi pins hopes on 2016 R18 Le Mans prototype

Down but not out, Audi is carrying forward its endurance racing program with the new R18 you see here. Unveiled on Saturday at the Audi Sport Finale end-of-season event in Munich, the new LMP1 is billed as the company's its most powerful and efficient race car yet. And it has been thoroughly redesigned to bring the Four Ring brand back to the winner's circle. Though technical details remain a closely guarded secret, Audi says that the latest evolution of the R18 (now apparently labeled sans the E-Tron Quattro) benefits from revised aero, lightweight construction, and "a modified hybrid system with lithium-ion batteries for energy storage, plus an efficiency-optimized TDI engine." That spells the end of the mechanical fly-wheel setup of the previous version, but sticks to the diesel fuel that Audi has championed instead of the gasoline favored by rivals Porsche and Toyota. With all its revisions, Ingolstadt undoubtedly hopes this latest version will perform better than the last. This past season was the worst Audi has endured since 2009. Its sister company Porsche beat it to both the drivers' and manufacturers' titles in the FIA World Endurance Championship and to the winner's circle at the 24 Hours of Le Mans. That marked the second straight year of defeat in the championship, following Toyota's domination last season, and marked only the third time Audi was defeated at Le Mans since 2000, following Bentley's win in '03 and Peugeot's in '09. In order to avoid costly inter-agency arms race, Audi and Porsche have agreed to each field two entries instead of three in both the championship and the headline race in Western France. Audi has yet to confirm its driver lineup, but Porsche has revealed its lineup consisting of defending champions Timo Bernhard, Brendon Hartley, and Mark Webber in one car, and Romain Dumas, Neel Jani, and Marc Lieb in the other. That leaves out the Le Mans-winning trio of Nico Hulkenberg, Nick Tandy, and Earl Bamber, with the former already counted out due to an F1 conflict. More powerful and efficient than ever before: Audi R18 celebrates world premiere in Munich - New hybrid race car for the 2016 Le Mans 24 Hours - Unchanged driver line-up in the DTM - High demand for new Audi R8 LMS GT3 sports car The brand with the four rings will be entering the 2016 motorsport season with the most powerful and efficient race car Audi has ever built.

Audi RS6 Avant and Mercedes-AMG E63 S drag race for Top Gear

Sometimes the kids are late for school, and you need a wagon to get them there in a hurry. In its latest drag race, Top Gear finds out which is the quicker high-performance family hauler: the Audi RS6 Avant or the Mercedes-AMG E63 S. The specs suggest this race should be quite close at the finish line. The RS6 has a 4.0-liter twin-turbo V8 with 552 horsepower, but the E63 S is a little more powerful with 577 hp from a 5.5-liter twin-turbo V8. However, the Audi has a traction advantage from the all-wheel drive system, whereas the Mercedes only spins its rear wheels. Pick your favorite, and then watch the video to see if the similar numbers translate to a photo finish in the real world. Related Video:

Audi testing long-tail version of R18 e-tron quattro for Le Mans

Race teams are always looking for ways to shave hundredths of seconds of their lap times. Case in point: Audi is making some slight changes to its prototype racecar to make it ever so much more slippery as it cuts through the air.
Debuting at the second round of the FIA World Endurance Championship at Spa on May 4, Audi will be testing a long-tail version of its R18 E-tron Quattro racecar. As its name suggests, the long-tail car gets a lengthened rear section with the goal of improving aerodynamics. The long-tail will be run alongside the standard version of the racecar as a testbed for possible changes that might be in store, heading into the 24 Hours of Le Mans.
Audi did not say how many inches were added to the racecar, but as you can see in the image above, "long-tail" definitely doesn't take on the same meaning of classic long-tail cars of the past such as the Porsche 917. More information about the car, Audi's team and even some info about the track itself can be found below.