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Mercedes-AMG considering turbo fours, hybrid sixes for future performance sedans

Think of the letters AMG and you'll probably end up picturing a performance sedan with a big V8. Such has become, after all, the Mercedes turning division's calling card. But with the introduction of its 2.0-liter turbo four, AMG is working at turning that notion on its head.
The highly potent engine produces 355 horsepower and is presently installed in the A45 AMG hatchback, CLA45 AMG sedan and GLA45 AMG crossover, giving Benz's smallest family a full range of performance models. But that might not be the full extent of the high-strung four-pot's use.
Speaking with AMG boss Tobias Moers, Britain's What Car? magazine reports that Affalterbach is considering slotting the same engine into larger models, particularly performance sedans like the C-Class. As we recently reported, Mercedes is already preparing to up the power from the turbo V6 in the C400 to slot a C450 Sport in below the C63 AMG. The C450 is expected to offer around 367 horsepower where the CLA45 AMG et al pack 355, but the lighter weight of the four-cylinder engine would likely offset the truancy of those extra dozen horses. Of course such a prospect would be much further down the pipeline than the C450 Sport which is expected to arrive much sooner.

Maybach crossover looking more likely, Smart crossover possible

Mercedes-Benz executives are still making positive noises about the chances of a Mercedes-Maybach SUV. Following Daimler CEO Dieter Zetsche's answer of "most likely" at the Geneva Motor Show, Mercedes Cars head of sales and marketing Ola Kallenius told Autocar that a Maybach SUV based on the next-generation GLS is "the more likely scenario." That's the same Kallenius that told Automotive News just last November that "we have no plans for it [a Maybach SUV]." It's a subtle shift, to be sure, but it's still a shift. The GLS – introduced as the latest-generation GL in 2013 – is still undergoing testing for its its mid-cycle refresh, so a Maybach version is a few years off. That would, coincidentally, give Mercedes time to see how the other super-luxe entrants are faring, and prepare its charge accordingly. Autocar expects that should it be built, it will come when the GLS shifts to the S-Class platform and most likely get the twin-turbo V12 from the Mercdes-Maybach S600 sedan, although the company's 4.0-liter twin-turbo V8 is possible if there are strong intentions for the Chinese market. Also on Stuttgart's agenda of dreams is a Smart crossover, according to the report. It could be Smart's best chance at profitably extending the range, based on the mania for tiny utes, and that would help both Daimler and the ForTwo's Renault Twingo sibling. It sounds like this is a ways off, though, due to coming up with an engineering solution for the Smart's engine packaging. Related Video:

Mercedes-AMG to phase out 5.5-liter V8 after next year [UPDATE]

UPDATE: A previous version of this story indicated that AMG's 6.0-liter twin-turbo V12 was still mated to a five-speed automatic transmission, however the latest models (including the S65 AMG sedan and coupe, SL65 roadster and G65 sport-ute are equipped with the newer seven-speed unit. Mercedes also reached out to point out that the 5.5-liter engine will be phased out gradually, not overnight. There's a lot to love about AMG's 5.5-liter twin-turbo V8. It produces as much as 577 horsepower and 590 pound-feet of torque, and delivers blistering performance to even the heaviest of vehicles. But try not to get too attached, because like its 6.2-liter, naturally aspirated predecessor, it's not long for this world. The latest word comes from Autocar, which reports that Mercedes will release the last applications for the 5.5 biturbo within these next two calendar years in the new GLE63 AMG and upcoming S63 AMG convertible. After that, even though it was only introduced in 2011, it will be phased out. Fortunately Affalterbach has a worthwhile successor already in place in the 4.0-liter twin-turbo V8 from the Mercedes-AMG GT. The smaller powerplant, already in store for the new C63, is already producing 503 hp and 479 lb-ft in S spec. That's still shy of the larger unit's output, but where the 5.5 is nearing the end of its production cycle, the 4.0 is just starting out. Of course the 4.0-liter biturbo isn't the only engine AMG is making these days. Smaller models (based on the front-drive platform) employ the 45-designation, high-output 2.0-liter turbo four. Models at the very top of the lineup, however, use a 6.0-liter twin-turbo V12 that may be a dinosaur, but with 621 hp and 738 lb-ft of torque on tap, still can't be beat.