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Mercedes to roll out C63 AMG late in 2014 with 4.0L V8

The new 2014 Mercedes-Benz C-Class is upon us, launching initially in North America with turbocharged four-cylinder C300 4Matic and six-cylinder C400 4Matic flavors. But that's only the tip of the proverbial iceberg when it comes to the vast array of powertrain configurations that will be offered in the new C-Class in markets around the world. Orders will soon be rolling in for gasoline, hybrid and diesel engines with four, six or eight cylinders, driving the rear wheels or all four, with the seven-speed automatic transmission soon to be replaced by a new nine-speed unit. But what enthusiasts are really looking forward to is the next C63 AMG.
As BMW has done with the M3 (and new M4), Mercedes has gradually ratcheted up the cylinder count in its AMG C-Class, graduating from the 3.6-liter V6 in the original C36 AMG to the 4.3-liter V8 in the C43 AMG, then the 5.5-liter V8 in the C55 AMG before going the distance with the sublime 6.2-liter V8 in the C63 AMG. Like its rivals, Mercedes is expected to use turbochargers as a replacement for displacement in the next model, but unlike its Bavarian rival, it won't be losing any cylinders in the process.
Skipping the 5.5-liter twin-turbo V8 that has gone on to power other AMG models, the next C63 AMG is still expected to introduce a new 4.0-liter twin-turbo V8 producing between 450 and 500 horsepower. It'll also reportedly keep the same seven-speed automatic transmission (instead of switching to the new nine-speed), but the jury's still out on whether it'll come with rear- or all-wheel drive (or offer buyers the choice). The downsized V8 - codenamed M177 - is then expected to find its way into other models, but the C-Class will be the first to get it when it arrives before the end of the new year ahead.

Ecclestone wonders if F1's upcoming turbo V6s should get augmented sound [w/videos]

While every team on the Formula One grid is worried about making a good showing in this year's championship at the same time as they develop a brand-new car for next year's championship, Bernie Ecclestone and F1 circuit promoters have a different concern: how next year's cars will sound. The current cars use 2.4-liter, naturally-aspirated V8s that can reach 18,000 revolutions per minute and employ dual exhaust, next year's engine formula calls for 1.4-liter turbocharged V6s that are capped at 15,000 rpm and are constrained to a single exhaust outlet. Ecclestone and promoters like Ron Walker believe the new engines sound like lawnmowers and that the less thrilling audio will keep people from coming to races. If Walker's Australian Grand Prix really is shelling out almost $57 million to hold the race, every ticket counts. As a fix, according to a report in Autoweek, Ecclestone "suggests that the only way to guarantee [a good sound] may be to artificially adjust the tone of the V6s."
However, neither the manufacturers nor the governing body of F1, the FIA, think there will be a problem. Ecclestone fears that if the manufacturers "don't get it right" they'll simply leave the sport, but the only three carmakers and engine builders left next year, Renault (its 2014 "power unit" is pictured), Mercedes-Benz and Ferrari are so embedded that it would stretch belief to think they'd leave the table over an audio hiccup - if said hiccup even occurs. And frankly, these issues always precede changes to engine formulas, as they did when the formula switched from V10 to V8; fans, though, are probably less focused on the engines and more on the mandated standardization of the sport and the spec-series overtones that have come with it.
No one knows yet what next year's engines will sound like, but we've assembled a few videos below to help us all start guessing. The first is an engine check on an Eighties-era John Player Special Renault with a 1.5-liter V6 turbo, after that is Ayrton Senna qualifying in 1986 in the Lotus 98T that also had a 1.5-liter V6 turbo, then you'll find a short with a manufactured range of potential V6 engine notes, and then the sound of turbocharged V6 Indycars testing last year at the Indianapolis Motor Speedway. Any, or none of them, could be Formula One's future.

F1 title fight gets closer | 2016 US Grand Prix recap

We ran into an old friend at the US Grand Prix: an on-form Lewis Hamilton. Reliability and proper clutch actuation helped the Mercedes-AMG Petronas driver resurrect the kind of performance we haven't seen since July at the German Grand Prix. After demolishing the previous qualifying record around the Circuit of the Americas, he put the field in his mirrors as soon as the lights went out, was never bothered by anyone behind, and crossed the finish line 4.5 seconds ahead of teammate Nico Rosberg. The drive was exactly what Hamilton needed to keep his molecule-thin Championship hopes alive. Rosberg, however, did exactly what he needed to do as well by finishing second. The German had a sketchier path to the checkered flag than Hamilton, getting pushed back to the third at the start by Red Bull's Daniel Ricciardo. Worse, Ricciardo appeared to have the pace to keep Hamilton honest ahead and hold Rosberg behind. Red Bull and Mercedes matched one another's pit stops, and it was clear the German would need more help to pass the Aussie. Rosberg didn't have to make his own luck, Ricciardo's teammate Max Verstappen made the luck for him. Ricciardo pitted on Lap 26, ceding second position on track to Rosberg. On Lap 30, Verstappen's gearbox failed while headed down the back straight. The Dutch teenager said the team told him to try to get the car back to the pits, so he dawdled through a few corners before following more team orders to pull over and park. Verstappen's parking spot and bad gearbox meant marshals couldn't push the car off the track, they needed to use a crane. That brought out a Virtual Safety Car, slowing the whole race down and allowing Rosberg to run a longer stint while losing less time on old tires. When the German came in for new tires on Lap 31 he emerged ahead of Ricciardo, and they ran that way to the end of the race, much to Ricciardo's disappointment. Sebastian Vettel claimed fourth for Ferrari, a placing perhaps due only to Verstappen and Kimi Raikkonen retiring from the race. An otherwise anonymous weekend for the scuderia called attention to itself on race day when Raikkonen had to call it a day after a botched pit stop, and Vettel couldn't make any impression on the teams ahead. Fernando Alonso rode home to a brilliant fifth for McLaren. During the first stint while rummaging around outside the top ten, the Spaniard complained about his lack of pace. By Lap 15 Alonso was tenth, on Lap 34 he was eighth.