2004 Audi A8 Quattro L Sedan 4-door 4.2l on 2040-cars

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2015 Audi S8

You've gotta hand it to the Audi A8. Last year, Mercedes-Benz launched the truly stunning S-Class, putting the rest of the high-dollar luxury flagship class on notice. With the brand-new S-Class turning heads and garnering all sorts of praise from the automotive press, classmates like the BMW 7 Series, Jaguar XJ and Audi A8 started to look, well, old. But Audi didn't see fit to just let its big sedan carry on and let the Mercedes take the cake.
So when Audi refreshed its A8 line for the 2015 model year with only minor updates, I kind of shrugged it off as just a quick way to keep the big sedan fresh until an all-new, hopefully S-Class-trumping version arrives. But then I drove the S8 pictured above, and I'm no longer so sure the Merc's shadow is as big and imposing as it once was.
Spoiler alert: the Audi S8 is simply fantastic.

Audi R8 LMS GT4 debuts in New York, a ready-made race car

The new Audi R8 LMS GT4 race car has made its debut at this year's New York Auto Show. Since 2009, the Audi R8 LMS GT3 has been available for customer purchase, but this new model is intended to be even more affordable. LMS GT-class racing is some of the most entertaining out there. Unlike racing series such as Formula 1, NASCAR, or even the World Rally Championship, GTE, GT3, and GT4 cars are still based heavily on cars you can find on dealer lots today. The GT4 class was created to have a true entry-level racing series. Homologation keeps the cars closer to their production counterparts than any of the other GT classes. Engines, bodywork, and suspension are all similar to production versions, though substantially beefed up for racing. In the case of the Audi R8 LMS GT4, more than 60 percent its parts are shared with the R8 coupe. That means parts are plentiful and relatively affordable. There are some significant changes between the production and racing versions. First, the V10 in the road car is actually far more powerful. The R8 LMS GT4 is limited to 495 horsepower, though that can vary slightly to meet different regulations. Also, rather than having Audi's wonderful Quattro all-wheel drive system, the R8 LMS GT4 is rear-wheel drive. Power is sent to the wheels through a seven-speed dual-clutch transmission. Though the car is set to make its debut next month at the Nurburgring 24 Hours, it won't actually be competing until the start of the 2018 season. Audi is simply tuning the car at different tracks before asking for approval at the end of the year. Pricing hasn't been announced, but expect it to fall between the $145,000 of the RS3 LMS and the $450,000 of the R8 LMS GT3. That's not nothing, but in the world of professional racing, it's a relative bargain. Related Video:

Audi TT Quattro Sport Concept takes the next-gen to the extreme

There's little doubt that the new Audi TTS and its 310-horsepower, 2.0-liter, turbocharged four-cylinder will be very quick when released to the general public. As a means of reminding us that Audi can do much more with the little TT, though, the German manufacturer has presented this, the TT Quattro Sport Concept, alongside its litter of new sports cars.
Complete with a 420-horsepower, 2.0-liter, turbocharged engine - yes, it really puts out 210 horsepower per liter - the TT Quattro Sport can snap to 62 miles per hour in just 3.7 seconds. 331 pound-feet of torque is also on offer, meaning this one-off TT outguns the TTS by 110 horsepower and 51 pound-feet of torque.
An S-Tronic transmission shuffles the power about, while the car itself rides on a lowered and stiffened suspension. 20-inch alloys are featured with centrally locking, racing-style hubs. Those racy wheels are housed in wells that have had their arches stretched an additional 1.18 inches, which, along with the lowered suspension, contribute to the TT's aggressive looks.