Audi Sports Car RS5

The Audi RS5 made its world debut last month at the 2010 Geneva Motor Show and come complete with an uprated version of the 4.2-liter FSI V-8 from the RS4. The latest iteration of the sweet engine delivers 450 horsepower at 8,250 rpm and, between 4,000 and 6,000 rpm, transmits a maximum of 317.15 pound-feet of torque.

Audi RS5

The mighty engine is matched to a seven-speed S tronic dual clutch gearbox and a new center differential in the standard quattro all-wheel drive system. Together, the powertrain propels the coupe’s 3,803 pound kerb weight from 0-62 mph in 4.6 seconds and sees it reach a top speed of 174 mph.

Despite the performance, the new RS5 has relatively good--for a performance car--fuel economy of 21.8 mpg for the European combined cycle.

Developed by quattro GmbH, the RS models comprise the dynamic spearhead of Audi's model range. The Audi RS5 is the latest torchbearer in a tradition dating back over 15 years to the RS2 Avant: superior handling in the mid-size class. A close relative of the V10 which powers the high-performance Audi R8 sports car, the high-revving V8 engine delivers its output from a displacement of 4,163 cm3. Like nearly every Audi gasoline engine, this one also operates via direct fuel injection known by the abbreviation FSI. This same technology has propelled the Audi R8 racing car to four triumphs at the classic endurance race in Le Mans. The common-rail system generates up to 120 bars of pressure.

Intensive fine-tuning of the dual-branch intake and exhaust system allows the undersquare engine to breathe freely; four adjustable camshafts and tumble flaps in the intake manifold facilitate mixture formation. The 4.2 FSI provides imposing torque and is right at home even at high revs - almost like a race engine. The engine delivers 331 kW (450 hp) at 8,250 rpm and - between 4,000 and 6,000 rpm - transmits a maximum of 430 Nm (317.15 lb-ft) of torque.

The vigorous strength, the spontaneous responsiveness, the joyful high-revving, and the throaty, sonorous music: this V8 produced by hand at Audi stunningly combines the essence of power and emotion. The 4.2 FSI propels the coupé's 1,725 kilograms (3,802.97 pounds) in 4.6 seconds from 0 to 100 km/h (0 to 62.14 mph) to an electronically governed top speed of 250 km/h (155.34 mph). Audi can increase that to 280 km/h (173.98 mph) upon request.

The RS 5 will ride on a lowered and stiffened suspension, and it most certainly will have a torque-vectoring rear differential similar to that which we recently sampled in the 2010 S5 cabriolet. Also look for an RS-specific calibration of the Audi Drive Select system that allows the driver to tailor steering effect, damping qualities, and transmission/throttle response to his or her tastes. We expect the RS 5 to make abundant use of lightweight materials such as aluminum, magnesium, and probably a conspicuous sprinkling of carbon fiber, á la BMW M3 coupe, as part of its ambitious plan to begin reducing vehicle mass across its model lineup and particularly among its performance cars.

A carbon design package is available for the engine compartment and, for the vehicle body, there are styling packages in black or matt aluminum look, including for the exhaust system, which can be fitted with black tailpipes. The new RS5 is scheduled to go on sale in Europe this July and previous spy shots of prototypes testing in the U.S. suggest the car will also be in local showrooms.

Sales of the Audi RS5 will begin in the spring of 2010. Its basic price will be approximately 77,700 euros.

2009 Audi Sports Car roadster/coupe TT-RS

Although the 2009 Audi TT has improved greatly on previous models in terms of general fun-factory and handling, enthusiasts still don't place it in the same league as the M Coupes, Boxter/Caymans and S2000s of the world. The S line model, which debuted in 2008, served up a big helping of improvements, but Audi fans still wanted more.

2009 Audi TT-RS

Audi is once again producing a five-cylinder engine – and a very special one at that. Arriving at dealerships this summer, the TT RS has a turbocharged 2.5-liter engine with direct gasoline injection; it produces 250 kW (340 bhp) and 450 Nm (331.90 lb.-ft.) of torque. The blazing five-cylinder engine enables the TT RS to perform extraordinary feats. In conjunction with quattro permanent all-wheel drive and a high-performance chassis, the engine makes the compact Audi TT RS a top-notch sports car – available as a coupé or roadster.

Sporty five-cylinder gasoline engines have a long legacy at Audi. The most famous is arguably the turbocharged 2.1-liter engine in the Audi quattro. The first version, which was launched in 1980, offered an impressive 147 kW (200 bhp). And the Sport quattro from 1984, directly inspired by motorsport, delivered a whopping 225 kW (306 bhp). For 25 years, turbochargers and quattro have been a dynamic formula for success.

Audi has resumed using this recipe. Designed from scratch, the five-cylinder engine combines a turbocharger with FSI direct gasoline injection to elevate the TT RS to a high-performance sports car. The TFSI delivers 250 kW (340 bhp) from a displacement of 2,480 cc (151.34 cu in): a specific output of 100.8 kW (137.1 bhp) per liter.

The power-to-weight ratio is also outstanding. In the case of the Coupé, which weighs in at a mere 1,450 kilograms (3,196.70 pounds), the power-to-weight ratio is just 4.3 kilograms per bhp.

The TT RS Coupé rockets from 0 to 100 km/h (0 to 62.14 mph) in 4.6 seconds; the Roadster needs just a tenth of a second longer. The limited top speed of 250 km/h (155.34 mph) is merely the official figure for both versions; as an option, Audi can increase it to 280 km/h (173.98 mph).

Almost even more impressive is the aggressive pulling power. The maximum torque of 450 Nm (331.90 lb.-ft.) is always available between 1,600 and 5,300 rpm. In addition, the TT RS overtakes without the slightest effort. Last but not least, its engine makes passengers’ skin tingle time and again thanks to its speedy and powerful response, its inspiring free-revving character, and its unmistakably guttural tailpipes: five-cylinder classical music by Audi!

As an uncompromising sports-car engine, the 2.5-liter TFSI is ultra-compact. Just 49 centimeters (19.29 inches) in length, it is ideally suited for transverse installation in the TT RS. And its weight of just 183 kilograms (403.45 pounds) also sets a record. The crankcase is made of vermicular-graphite cast iron. This high-tech material unites the utmost in strength with low weight; it has otherwise only been used for the large TDI engines from Audi. Perfectly placed reinforcements enhance the block’s loadability. The lightweight cylinder head, the pistons, and the connecting rod are lightweight as well as high-strength.

The ultra-powerful five-cylinder engine is extremely fuel-efficient, requiring an average of just 9.2 liters/100 km [25.57 mpg] as regards the Coupé (Roadster: 9.5 l/100 km [24.76 mpg]). Switchable flaps in the intake manifold mix the incoming air in a calculated configuration. Injected at a pressure as high as 120 bar by the common-rail system, the gasoline swirls intensely in the combustion chamber – which in turn cools the walls. This subsequently facilitates a compression ratio of 10.0:1, which is very high for a turbocharged engine. Both of the adjustable camshafts, controlled via chains, also enhance charging efficiency with respect to the air-fuel mixture.

Four-door Audi A1 headed to Paris

The small car market is heating up fast, even for upmarket brands like Audi, Mercedes-Benz and BMW, the latter of which has the majority of the market cornered with its MINI sub-brand. The Bimmer competitor from Ingolstadt plans on attacking that market with its A1 subcompact, but unlike the Metroproject concept from Tokyo, the new A1 due to be unveiled at the Paris Motor Show will sport four doors. Europeans are likely to get a production model spawned from the concept, which will likely be built in Brussels, Belgium and be introduced as a 2009 model. An electric model could follow shortly thereafter. Will the U.S. be blessed with another Germanic mini car? Audi's elusive Magic 8-Ball currently says "Not Likely," but with sales of the MINI going strong it's entirely too early to count it out completely.