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Mercedes-Benz engines with 48-volt systems coming in 2017

As part of a big green push announced yesterday, Mercedes-Benz is jumping into the world of 48-volt power. The company will launch a new family of efficient gasoline engines next year and will begin rolling out 48-volt systems with it, likely in its more expensive cars first. Mercedes will use the 48-volt systems to power mild-hybrid functions like energy recuperation (commonly called brake regeneration), engine stop-start, electric boost, and even moving a car from a stop on electric power alone. These features will be enabled through either an integrated starter-generator (Mercedes abbreviates it ISG) or a belt-driven generator (RSG). (RSG is from the German word for belt-driven generator, Riemenstartergeneratoren. That's your language lesson for the day.) Mercedes didn't offer many other details on the new family of engines. There are 48-volt systems already in production; Audi's three-compressor SQ7 engine uses an electric supercharger run by a 48-volt system, and there's a new SQ5 diesel on the horizon that will use a similar setup with the medium-voltage system. Electric superchargers require a lot of juice, which can be fed by either a supercapacitor or batteries in a 48-volt system. Why 48-volt Matters: Current hybrid and battery-electric vehicles make use of very high voltages in their batteries, motors, and the wiring that connects them, usually around 200 to 600 volts. The high voltage gives them enough power to move a big vehicle, but it also creates safety issues. The way to mitigate those safety issues is with added equipment, and that increases both cost and weight. You can see where this is going. By switching to a 48-volt system, the high-voltage issues go away and the electrical architecture benefits from four times the voltage of a normal vehicle system and uses the same current, providing four times the power. The electrical architecture will cost more than a 12-volt system but less than the complex and more dangerous systems in current electrified vehicles. The added cost makes sense now because automakers are running out of ways to wisely spend money for efficiency gains. Cars can retain a cheaper 12-volt battery for lower-power accessories and run the high-draw systems on the 48-volt circuit. The industry is moving toward 48-volt power, with the SAE working on a standard for the systems and Delphi claiming a 10-percent increase in fuel economy for cars that make the switch.

2016 German Grand Prix race recap: so-so racing, great questions

We can summarize the 2016 German Grand Prix in one sentence: Mercedes-AMG Petronas driver Lewis Hamilton started second on the grid, passed pole-sitter and teammate Nico Rosberg before the first corner, and dominate to the finish. In fact, Hamilton turned his engine power output down on Lap 3 and still took the checkered flag seven seconds ahead of Red Bull driver Daniel Ricciardo. Ricciardo's teammate Max Verstappen crossed the line another six seconds back. Rosberg fell to fourth at the first corner and couldn't find the pace to reel in the Red Bulls. His questionable pass on Verstappen didn't help when the stewards penalized Rosberg five seconds; the overtake reminded us of Rosberg's move on teammate Hamilton in Austria. That penalty turned into eight seconds when the Mercedes-AMG Petronas stopwatch didn't work in the pits. Ferrari pilots Sebastian Vettel and Kimi Raikkonen finished fifth and sixth. Those six drivers all started in the top six, too. Behind them, on Lap 28 of the 67-lap race the next four drivers were Valtteri Bottas in the Williams, Nico Hulkenberg in the Force India, and Jenson Button and Fernando Alonso in McLarens. Low fuel and old tires put the kibosh on Alonso's pace just four laps from the finish, allowing Force India's Sergio Perez to pass, rounding out the top ten. The issues up for debate during the four-week break are far more interesting than the weekend's race. As bad as Ferrari's day might have been – and we'll get to that – Rosberg probably took the biggest hit, losing the race before the first corner for the second weekend in a row and falling 19 points behind Hamilton. Rosberg won the first four races of the season, then the teammates tripped over one another in Spain. Hamilton's won six of the seven races since Spain, Rosberg's best result in that time is a second-place in Hungary. Hamilton turned his engine down on Lap 3 (!) because he's used his entire season's allotment of five turbochargers and five MGU-Ks. Those early-season gremlins now have him on edge of grid penalties. Unless Hamilton's momentum cools off in August, however, that reliability danger might be the only dent in his armor. Rosberg, who once led the Championship by 43 points, will surely drown in his thoughts – and maybe schnapps – over the summer break. Whatever the Italian word for "meditation" is, there'll be a lot of it at Ferrari during the F1 summer break.

2017 Frankfurt Motor Show | Observations on the Ferrari Portofino, Honda Urban EV and more

Related: We obsessively covered the Frankfurt Motor Show — here's our complete coverage The 2017 Frankfurt Motor Show kicked off the fall reveal season with an impressive array of powerful cars blended with forward-looking concepts. It's a seminal period for automakers, who find themselves at the intersection of disruption and opportunity. With that in mind, here are four takeaways from Frankfurt. The transformation of the curvy yet overbaked Ferrari California T into the Portofino is complete, and its coming-out party in Frankfurt served notice that Ferrari's entry-level sports car is much more formidable. There was nothing wrong with the California (and later the California T), but the Portofino features a cleaner look with stronger lines and an elegant resemblance to the rest of the Ferrari family. The California name is a good one. Used on a number of memorable cars in the 1950s and '60s, it's steeped in tradition, and certainly Ferrari will dust it off again. But switching to Portofino, the name of a scenic town in Italy, is a nice way to change the conversation and generate fresh interest in this part of the Ferrari portfolio. Man, people are stoked over the Honda Urban EV concept. Why? I assume it's the retro look that harks back to early Civics, and the lack of information about the concept itself. What people don't know, they're imagining. Honda hasn't even confirmed the range, the car is very small, and it likely won't be sold in the United States. With this dearth of facts, enthusiasts are filling in their own blanks. I guess that's OK. Count me among the intrigued. When I saw pictures of this thing early Tuesday morning, I was pretty excited, too. We do know Honda is expanding its electric strategy, and two-thirds of its new vehicles sold around the world will have some form of electrification by 2030. The Urban EV launches in Europe in 2019, and a hybrid CR-V rolls out in Europe next year. Unconfirmed for the U.S. market, it seems like a no-brainer to bring that version of the CR-V here. The electrification and autonomous tech parade of concepts continues. You gotta be there. It's the cost of doing business in the modern automotive landscape. This technology takes years to develop and launch, so the next best thing to remind the world you're trying to be cutting-edge is to show off lots of fancy concepts. Frankfurt had plenty. A couple standouts: The BMW I Vision Dynamics and Audi's Elaine and Aicon.