Now that Audi has begun production and sales of the new A4 sedan and wagon, it's time to start rounding out the lineup. At next week's Paris Motor Show the next generation S4 will debut and marks the introduction of a new powerplant for the S-series lineup: a supercharged 3.0L TFSI V6. The supercharger uses a pair of four vane rotors and sits in the valley of the engine block, with air fed through a pair of intercoolers to the combustion chambers where a direct injection system provides the fuel. With 333 hp and 325 lb.-ft. of torque fed through either a six-speed manual gearbox or a new seven-speed S-Tronic dual clutch transmission, the S4 sprints to 62 mph in 5.1 seconds. Like the more subdued A4, the S4's quattro system delivers 40 percent of the torque to the front axle and the remaining 60 percent to the rear. As with previous S models, the S4 get a more aggressive looking front and rear fascia and a new 18-inch wheel design. Inside, the S4 gets more supportive sport seats and the usual assortment of trim upgrades. Our European friends will be able to get their mitts on both sedan and Avant wagon variants of the S4 starting next March. Here in the U.S. we'll have to wait until the fall and we'll also have to make do with the sedan only. Pricing should be similar to the current model at about $48,610.
There have been countless conflicting reports about what will power the next generation Audi RS4 and the forthcoming RS5. Fourtitude had heard the rumors and decided to go straight to its sources for clarification. While the four-ringed obessesives weren't able to divulge the identity of their insiders (neither did CAR, which published of one the first stories about future RS powertrains), Fourtitude may have put to rest the rumblings that the next RS4 would ditch it's V8 in favor of a supercharged six.
According to Fourtitude, the 4.2-liter FSI V8 will soldier on in the RS4, and will also find a home in the RS5, which is currently undergoing testing both in Germany and the U.S. While a boost in output wasn't divulged, engineers will supposedly keep displacement the same, while decreasing frictional losses and possibly incorporating a new version of Audi's Valvelift system. If all goes according to plan, expect at least 450 hp from the direct-injected 4.2 and don't be surprised to find the tweaked V8 in the revised R8 around the same time.
Audi is using American supercharging muscle to give its new 3.0 liter TFSI V6 the desired wallop. Eaton Corporation has been enlisted by Ingolstadt to supply positive-displacement, Roots-type blowers that will work with direct injection to deliver 290 horsepower and fat, responsive torque down low on the tach. Roots blowers aren't anything new, but Eaton has refined the design with its latest Twin Vortices Series units. The TVS units add a fourth lobe to the rotors, and crank up the twist to 160 degrees for maximizing the amount of atmosphere the blower can pump out. Jettisonning turbochargers may help packaging when the V6 is crammed into the S4's engine bay, as well as reducing complexity by simplifying intake plumbing. 310 lb/ft of torque at 2,500 rpm will put a grin on anyone's face, and we'd expect to see this engine proliferate into many Audi engine bays.
Audi has finally confirmed all the details on its new range-topping supercharged V6, and the final output figures are in line with previous reports. The 3.0-liter TFSI engine (although the "T" is a misnomer since it used to stand for "turbo") is putting out 290 hp and 310 lb.-ft. of torque, with maximum twist beginning at an incredibly tractable 2,500 RPM. The blown six's thrust should be linear considering the belt-driven design, and Audi maintains that it will consistently outperform its biturbo predecessors. Although Audi has yet to confirm what models the supercharged, direct-injected mill will be fitted to initially, it's a safe bet that it will find a happy home within the new A6 and the next S4.
The A5 already has good looks, and for the 2009 model year, Audi's killer coupe adds a bit of environmental responsibility. Audi's new 2.0L TFSI engine will be added to the A5's repertoire, giving the four-ringed automaker a vehicle capable of a reported 42.8 Imperial mpg (36 mpg US) in mixed driving. The little powerplant also has a fun side, with 208 hp at 4300 rpm and 258 lb-ft at 1500 rpm, which helps the A5 hit 62 mph in a respectable 6.9 seconds when equipped with the six-speed manual. The engine was derived from the 1.8L TFSI, but it includes Audi valvelift technology, which ueses sliding cam units mounted on the intake camshaft to allow for more valve lift variation to maximize performance and efficiency. The good news is that the frugal petrol motor will be available beginning this August for a respectable £28,760, but the bad news is that there is no word when the engine will be available Stateside.
Few companies do wagons like Audi does. Take, for example, the RS6 Avant – the supercar-crushing super-estate with the 580+hp twin-turbo V10. The combination of "wagon" and "exotic" in the same sentence make for a real attention-grabber, as far as family-haulers go, but push comes to shove, we're not sure we share our European counterparts' love for estate wagons. That's why Audi has been preparing a sedan version of the RS6. The undisguised spy shots of the sedan we caught back in February suggested the car was just about ready, but another set of spy shots now surfacing – a month and a half later – show that Audi may have gone back to the drawing board.
The new candids show a beefed-up A6 – complete with aggressive front end, bulging fenders, side skirts and jumbo wheels, suggesting the RS6 despite the lack of badging – but with a little surprise around back: a rear end styled like that of the newer, smaller A4 sedan and A5 coupe. The shots suggest that Audi is preparing a little butt-lift for the entire A6 range to fall in line with its new posterior styling direction, but is using the RS6 to showcase it first. Like we said with the last round of spy shots, this makes perfect sense when you consider that most drivers won't be seeing much else of the RS6 as it thunders down the left-hand lane.
If you were disappointed by the news that Audi would not put the R8 V12 TDI Le Mans into production, we've got some exciting news to lift your spirits. According to emerging reports, Audi has confirmed previous rumors that a V10 will find its way into the R8's midship engine bay in the second quarter of next year. And not just any V10, either: the 580-hp twin-turbo V10 from the RS6 Avant. (And here we thought Audi developed that engine just for a station wagon.)
The news is attributed to an interview in Autocar magazine with Wolfgang Hatz. What, you don't know who Wolfgang Hatz is? Tssk-tssk. (Okay, we didn't either.) He's the head of powertrain development for the entire Volkswagen Group, and he says the engine has already been signed off on. Initial cooling problems that caused previous prototypes to burst into flames have been solved chiefly through the addition of a roof-mounted vent like the one seen on the previous R8 V12 TDI concept. Reports suggest the supercar will get the nameplate RS8, although there's the potential for Audi's halo car to be confused with an RS version of the A8 sedan. While we're forced to take everything with a grain of salt today, this is one lead we hope isn't an April Fool's Day hoax.
