2006 Audi A4 S-line Quattro 2.0l on 2040-cars

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Notes from Day One of the 2013 Twelve Hours of Sebring

The 61st edition of The 12 Hours of Sebring is on, and Autoblog has come to central Florida with Audi to feast on jumbo boiled peanuts, pickled eggs and the final race for the LMP1 class at the oldest road course in North America. As Audi has been doing for more than a decade now, it's brought its latest endurance race car, the 2013-spec R18 etron quattro, to Sebring to begin testing for Le Mans.
Why the commitment to Sebring? Audi Sport executives have repeatedly called Sebring "punishing," "extremely demanding" and "one of the toughest tracks in the world." It is a 3.47-mile circuit that, in places, feels like it was made from the leftover bits of other circuits. Doing the 12-hour distance in Florida is thought to be a good start on lasting the 24-hour distance in France, and we can't think it a coincidence that Audi has won ten times here in the last 13 years and 11 times in Gaul.
Where there's rhyme - and victory - there is reason. We think we found a few of them on our first day where preparation, technology, fastidious attention to detail and sweat fit right in with swamp cabbage...

New Audi R8 Spyder V10 Plus is a topless brute

If the "normal" 540-horsepower R8 Spyder isn't doing it for you, the wait is over. Audi has upped its convertible, mid-engined Huracan sibling to Plus spec, which means the FSI V10 gets a whopping 70-horsepower bump, all the way up to 610. Plus, like its lowlier sibling, you get a power folding soft top that goes up or down at up to 31 mph. But wait, there's more! The normal R8 Spyder can hit 60 miles per hour in just 3.5 seconds, according to the manufacturer, while the new one will hit 62 mph in 3.3 seconds. (Since the first specs we have are for the European version, we get 0-100 km times rather than 0-60 mph times. It's clear the V10 Plus is notably quicker.) No matter where you buy one, each V10 Plus will rev out to 8,700 rpm. Top speed increases slightly, to 203.8 mph – much faster than you'd want to go with the top down, surely. The rest of the powertrain is standard R8. There's a seven-speed S-tronic dual-clutch gearbox, the only transmission available, and Quattro all-wheel drive standard. Like the standard R8, it can send up to 100 percent of its power to either axle in extreme situations, and there's a rear differential locker for added traction. While a variable-assist steering rack is an option, the standard steering box is an electromechanical unit. Inside and out, there's a lot of exotic stuff. Optional Audi laser headlights and standard Audi virtual cockpit tick the box for Euro technophiles, while diehard Audi Sport enthusiasts will appreciate the carbon fiber diffuser that adds up to 220 pounds of downforce to the package. Speaking of pounds, that top weighs 97 pounds, but the total package weighs 55 less than the regular R8 Spyder. That weight savings is due to lightweight bucket seats, carbon ceramic brakes (15 inches up front, 14 in the back), and lighter alloy wheels. The cars will be delivered in Europe in late summer. We'll know more about US-market cars soon, surely.

Audi spotted testing new S4 at the Nurburgring

Where there's smoke, there's fire. Only in this case, the smoke is the upcoming new Audi A4, and the fire is the S4 spotted undergoing testing in this latest batch of spy shots. Snapped in both sedan and Avant wagon forms while undergoing testing on and around the Nurburgring – where else? – the next-generation Audi S4 will of course be based on the new A4 that's anticipated to debut in Frankfurt this September. That means MLB Evo architecture and styling that takes a page out of the new TT's playbook. But in S4 trim, it'll be altogether more performance oriented. Expect an even more powerful version of the outgoing model's 3.0-liter supercharged V6, pumping out a good 340-350 horsepower to all four of its driven wheels. That power will help it keep pace with the new Mercedes C450 AMG Sport. It won't have to take on the new C63 AMG directly, though, as that'll be the job of the next RS4 that will slot above it. But since that model may never make it to US showrooms, this will stand as the flagship of the new A4 family as far as the American market is concerned. Related Video: