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Audi kills off its 420-hp four-cylinder engine project

Audi's supercar-slapping, fire-breathing four-cylinder concept engine will remain just that, with Autoblog confirming that it has been internally killed off. Speaking at the launch of the TT RS, the engineering boss of Audi's Quattro GmbH division, Stephan Reil, said the Volkswagen Group had stopped all development of the 420-horsepower, 2.0-liter four it showed in the 2014 TT Quattro Sport Concept car (above). Despite previous assurances that Quattro had roles for both the EA888-based engine and Audi's wildly charismatic 2.5-liter, five-cylinder motor, post-Dieselgate reality has killed the smaller engine. "The 400-horsepower EA888 engine is dead," Reil said. The EA888 engine was conceived and developed by the same man behind AMG's powerhouse 2.0-liter four. Friedrich Eichler left AMG to become the Volkswagen Group's gasoline engine development go-to guy, and he was confident the 420-hp engine could be turned into a production car quickly, as was then-Audi development boss, Ulrich Hackenberg. It was even suggested that because the EA888 engine family bolted straight into the Volkswagen Group's ubiquitous MQB small-car architecture, the little powerhouse could be cheaply and quickly dropped into any of the company's cars that needed an image boost. Since then, Quattro has elevated the five-cylinder motor, switching it to an all-alloy block with a magnesium oil pan to cut down its weight while boosting its power and torque levels. Where the four-cylinder engine was shown with 420 hp and 332 lb-ft of torque, the production version of the TT RS's new five-cylinder engine totes 400 hp and 354 pound-feet of torque. The smaller engine's proponents claimed a 0-62 mph acceleration figure of just 3.7 seconds for the concept TT that carried it, and it might not be a coincidence that the all-new TT RS claims exactly the same figure. The 2.0-liter motor had a torque peak that arrived at 2,400 rpm and began to taper off at 6,300 rpm, while its power apexed at 6,700 rpm, thanks in part to a turbocharger that could feed it up to 1.8 bar of air. Flip to the TT RS' data and you're looking at more torque at lower revs and a touch less power, but at higher revs. That's not a lot of wriggle room for the concept engine to operate, especially when the perceived value of the five-cylinder engine is higher than the four, and the four's development and production costs would be higher than the five's.

2015 Rolex 24 at Daytona gallery of Saturday afternoon and night racing

The 2015 Rolex 24 at Daytona only has a little under five hours left to run and we won't write anything in here to spoil it. Instead, we're just going to leave you with a gallery of 169 photos from the Saturday afternoon and overnight action before we come back with a race recap. Enjoy! Featured Gallery 2015 Rolex 24 at Daytona mid-race action View 169 Photos Image Credit: Copyright 2015 Jonathon Ramsey / AOL Motorsports Audi Racing Vehicles daytona night race

First official Audi R8 photo leaks

The next-gen Audi R8 makes its grand debut in a just a few days at the 2015 Geneva Motor Show. However, leaks aren't uncommon for such a highly anticipated model, and it appears that the first official shot of the future supercar is now online. Autoblog en Espanol claims this is the first leaked factory photo showing the new Audi R8 completely undisguised. The single image depicts the supercar from the front, and it looks a lot like both Audi's own official teaser and the previous blurry image from Instagram. Based on this picture, the German designers thickened the outline around the grille at the front and added vertical slats at each corner. They also removed the gentle curve in the headlights in favor of a completely angular look. While the side blades were one of the major styling features of the original, their appearance has been toned down by removing the vertical, contrasting strip running up the body. Though the exterior design seems to evolve the R8 slightly, there are some big changes for the powertrain. Audi is ditching the V8 for the latest model and opting for two tunes of the 5.2-liter V10. The standard version gets 540 horsepower, and the Plus pushes output up to 610 hp. The top trim can reportedly hit 60 miles per hour in 3.2 seconds and reach a top speed of 205 mph. Although, there are already the rumors of other variants, including a turbo V6, coming later. Related Video: