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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.

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.

Weekly Recap: Takeaways from the Frankfurt Motor Show

We obsessively covered the 2015 Frankfurt Motor Show, and naturally, we selected our favorites from this fall's biggest automotive event. Now that the dust has settled, we're looking ahead to what it all means. Here are three takeaways from the floor in Frankfurt. The Germans are serious about electric vehicles: It's a bit cliche to say BMW, Mercedes, and Audi have downplayed electrics in favor of other technologies, like diesels. For a time that may have been true, but those three companies, along with Porsche and Volkswagen, are emerging as leaders in EV development. That was on display in Frankfurt, when all of them revealed either all-electric or plug-in hybrid models. Gas prices are relatively low in the United States, but clearly the Germans are thinking long-term and globally. Everyone is serious about SUVs: You gotta have one, even if you're Bentley or Jaguar. It's 2015 and it's what consumers want. As Jaguar design director Ian Callum put it, "Not to be in the sector would be a little naive for the sake of purity." It's not just the flashy exotic luxury makers. Nissan showed the Gripz concept, which is rakish, radical, and meant to blend traits of SUVs and sports cars into a vehicle that really crosses over. Look for more, especially in the luxury sector, as Rolls-Royce, Lamborghini, and Aston Martin ramp up their own SUV efforts. There's no ceiling to the luxury market: Speaking of high-end cars, companies are continuing to invest in extravagant wares beyond just SUVs. Even during the recession, ultra-luxury makers remained relevant, and now they're back at full stride. In Frankfurt, that was illustrated by yet another S-Class model, the cabriolet, which will come in S550 and S63 AMG variants in the United States. Ferrari also showed off the 488 Spider, and Lamborghini opened up the Huracan LP 610-4 Spyder. Meanwhile, Bugatti's Vision Grand Turismo concept reminded enthusiasts that it's plotting life after the Veyron. European auto shows always draw the glitziest reveals from luxury makers, and this year didn't disappoint. OTHER NEWS & NOTES 2016 Honda Civic redesigned with snazzier style, turbo power The 10th-generation of the Honda Civic debuted this week at events in Los Angeles and Detroit ahead of its launch in the United States this fall as a 2016 model. Honda fortified the Civic with LED lights, an available turbo engine, and a more tech-laden cabin.