2007 Audi S4 Base Sedan 4-door 4.2l on 2040-cars

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Next Audi RS4 to get V6 turbo, US sales still unclear

Audi's high-performance S models have forged a reputation in the US for offering wonderful driving dynamics in a package that doesn't scream, "I bought a sport sedan." However, its even higher-performance RS models are still somewhat of a rarity here. While the RS5 and RS7 are in the current US lineup, many of the wild RS models that Europe gets, like the RS6 Avant (pictured above), never make it to these shores. Unfortunately, that might not be changing anytime soon with the next-gen RS4.
The RS4 will follow the lead of the next BMW M3/M4 and (rumored) next Mercedes-Benz C-Class AMG and make the switch to a smaller turbocharged powerplant. According to an Audi insider speaking to Car and Driver, the next RS4 will drop the last generation's 4.2-liter V8 in favor of a turbocharged V6. The engine block will likely be shared with the supercharged 3.0-liter V6 in the regular S4 but fitted with two turbochargers. Power would likely be around 400 horsepower to match the 425-hp M3 and rumored 450-hp C-Class AMG.
Unfortunately, the RS might not make it across the pond to our waiting hands because the source says no decision has been made to export them yet. Obviously, we hope that Audi makes the right decision and brings the next RS4 here.

2017 Audi S4 First Drive

For all its power and easy performance, the best thing about the last Audi S4 was its uncanny ability to act like a normal (but very high-spec) A4 for most of its life. Then, when you needed or wanted a bit more speed or a bit more grip, you pushed a button or opened the tap and it became something else. It became a thing with more grip, more poise, more focus, and more gristle, but the changeover between the two S4 characters was seamless. That doesn't seem to be the case with the new one. The latest, B9 A4 has been well received and is probably the best mid-sized premium car out there, so that should have left the S4 a simple job to become the best warmed-up premium mid-sizer. It hasn't quite happened like that. The spec sheet suggests the S4 should come out on top in the fight with the BMW 340i and the Mercedes-AMG C43, but the numbers aren't everything. The engine seems impressive on paper; the all-new EA838 3.0-liter turbocharged V6 was jointly developed with Porsche (and it's closely related to Porsche's next V8, with which it will share non-internal bits like the camshaft chain). The 60-degree V6 weighs 31 pounds less than the old S4's supercharged V6, and it's replete with variable valve timing and lift, centrally mounted fuel injectors, and both direct and indirect fuel injection. That gives it 354 horsepower at 5400-6400 rpm (up 6.5 percent) and 369 pound-feet of torque from 1,370 to 4,500 rpm. That gives it a peak 44 lb-ft higher than the old one, spread across a band 600 revs broader. At 2,000 rpm, where drivers live every traffic light, it has another 74 pound-feet. That's enough motivation to move to 62 mph in 4.7 seconds. There's a new all-wheel-drive system that usually shoots 60 percent of the torque to the back but can ramp that up to 85 percent when it needs to, or it can swing it around to fire more than 70 percent to the front axle. The category benchmarks suggest turbocharged 3.0-liter gasoline sixes are the thing to have, with the Mercedes-AMG C43 using one, the 340i BMW having one (though it's straight), and Maserati's Ghibli also using one. The oddball is Jaguar's XE S, which uses a supercharger. You know, like Audi just ditched. The S4 trumps all but the C43 on power (the nine-speed Benz has 362 hp). While it ties the Ghibli for torque, it again trails the Benz (by 15 lb-ft) though its torque peak hits far earlier (the Benz waits until 2,000 rpm).

Audi readying diesel PHEV models for US and Europe

With the racing pedigree provided by the Audi R18 E-Tron Quattro, you'd be forgiven for thinking that the German king of Le Mans is capitalizing on the connection between its road cars and race cars at every opportunity. Maybe there's an entire range of Le Mans Editions for the automakers diesel-hybrid offerings, with perhaps Tom Kristensen acting as the brand's spokesperson for the technology in Europe. You'd be wrong, though, because despite the R18's overwhelming successes in endurance racing, Audi the road-car manufacturer doesn't offer a single diesel-hybrid production car.
This factoid will hopefully be as short lived as it is disappointing, though, as a diesel-electric is around the corner, according to the brand's tech boss, Ulrich Hackenberg. In fact, it gets better than a mere diesel-hybrid; it will be a plug-in diesel-hybrid, only the second to hit the market, alongside the European-market Volvo V60.
According to Hackenberg, the new tech will be the result of a marriage between the brand's well-received 3.0-liter, TDI V6 with an electric motor. The next-generation Audi Q7 (shown above) will be the initial recipient, confirming previous reports that claimed a PHEV TDI could come to the next-gen CUV. Its MLB architecture, meanwhile, would allow the plug-in-hybrid-diesel powertrain to be fitted easily enough to the A8 luxury sedan. While the new Q7 should hit the market at some point in 2015, it's unclear when the PHEV TDI model could see the light of day.