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2015 Mercedes-Benz S63 AMG Coupe

Conventional wisdom would dictate that adding more power and several key performance enhancements to an already very good car, like the 2015 Mercedes-Benz S550 Coupe, will end up equaling an even better car. In the case of the 2015 Mercedes-Benz S63 AMG Coupe, conventional wisdom sort of applies, but perhaps not as much as we'd have initially guessed. We'll get into the nitty gritty details in just a moment, but here's the most immediate takeaway we had in our minds as we walked away from this super coupe: The S63 AMG is excellent, but so is the slightly more mundane S550 Coupe on which it is based, and which is priced some $41,000 less expensive than its more powerful sibling. Chew on those figures while we examine what differentiates the two S-Class Coupes. Drive Notes As expected, the single greatest highlight of the 2015 S63 Coupe is its engine. As a powerplant, it's a gem. As a hand-built engineering exercise, its 577 horsepower and 664 pound-feet of torque are just as impressive in real life as they sound when recited from stat sheets. Not that the old CL63 AMG was lacking in power, but the new S63 AMG Coupe boasts 41 more horses and 74 more lb-ft than the outgoing engine. The run to 60 miles per hour takes a scant 3.9 seconds, according to M-B, aided in no small part by the car's 4Matic all-wheel-drive system and other assorted electronic brains deciding where, exactly, all those ponies should be sent. The rear-biased system is tuned to send two-thirds of the engine's power to the rear wheels in a bid to make the car feel more like what performance-minded drivers expect. Top speed is electronically limited to 186 miles per hour, which is plenty fast enough, even in the days of 200-plus-mph sedans from M-B's former corporate cousin Dodge. We didn't get anywhere near the car's maximum velocity, but our brief trips into triple-digit territory were quiet, comfortable and completely free of drama. The seven-speed automatic gearbox responds quickly to requests of your right foot, but the steering wheel-mounted paddles don't change gears as quickly as we'd like when in Manual mode. Controlled Efficiency (which we'd call Comfort) maximizes efficiency, keeping the transmission in higher gears and shifting earlier than when in Sport mode, and we didn't find much fault with the computer's shifting algorithms in either setting.

Mercedes-Maybach rolls out new S, GLS and EQS SUV Night Series

Mercedes-Maybach is embracing a new look for what it hopes will be a new generation of buyers — one keen to embrace its new electrified luxury models. The new Night Series will be offered on all three models in the current Maybach lineup, with the S-Class and EQS SUV variants arriving later this year and the GLS following in early 2024. While the execution off each Night Series is dependent on the model in question, they share a few common elements. Their headlights, for instance, are all embellished with dark chrome Maybach logos on rose gold trim. You'll find that dark chrome just about anywhere you'd normally spot bling, from the grille and exterior trim to the coating on the rear exhaust finishers. And then there are those wheels. I don't know what to say, quite honestly. Just look at them. And while you're at it, peep at the running boards on the EQS SUV.  While the cars shown here are quite uniform, differentiation will come in the form of finish choices and further individual customization. All three are offered with the Obsidian Black/Mojave Silver two-tone combination shown here. The EQS SUV will also be available in Obsidian Black and Manufaktur Diamond White finishes, the S-Class can be done up in various grey, black and white hues, and the GLS can be had in white or Obsidian Black.  Inside you'll find herringbone-patterned, open-pore wood with aluminum accents along with another smattering of dark chrome. The EQS SUV and GLS can optioned with with Nappa leather in two-tone Crystal White/Black Pearl or just plain Black Pearl. In the S-Class, you can do Nappa leather in either Deep White/Black Pearl or straight Black Pearl.  Look for more on the Mercedes-Maybach S-Class and EQS SUV Night Series soon, with more to come on the GLS variant as its arrival draws closer.  Related video: 2022 Mercedes-Maybach S 580 walkaround

Why it's difficult to accurately test the efficiency of a plug-in car

When it comes to electric vehicles and plug-ins in general, the Environmental Protection Agency-certified range is a hugely important number. While actual range anxiety is largely psychological, the magic number does provide a point of comparison of buyers considering one EV over another. The driving distance is also often touted by automakers when marketing their models. Unfortunately, as Green Car Reports finds in a recent deep dive, the way the EPA calculates the figure is a convoluted mess, and discovering the reasons why is definitely worth the read. The issue isn't about bad science but instead comes down to vague wording. The EPA's accepted range test is sourced from an evaluation called J-1634 from the Society of Automotive Engineers, and it seems to provide balanced results for vehicles that automatically reach a single state of charge when plugged in. However for models with multiple charge settings, the situation gets complicated very quickly. Of course, these modes are often created in the software, meaning that a car's certified driving distance can change with just a few taps of the keyboard without the real world results owners might experience actually changing. By showing the test's effects on the certified range for the Tesla Model S, Nissan Leaf and Mercedes-Benz B-Class Electric Drive over the last few years, Green Car Reports makes a compelling argument that it's the evaluation that needs to change. Thankfully, it appears that the solution is a very simple one. Get the details here.