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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.

Recharge Wrap-up: Batty battery covers, Mercedes at Silvretta, new Hyundai Sonata Hybrid available in 2015

Apparently, Chevrolet Volt battery covers make suitable homes for bats. As part of an Eagle Scout project, Matthew Netherland created 30 bat houses out of scrapped Volt battery covers donated by Chevy. 22 of the bat houses will be set up near hydroelectric dams in Michigan. Each bat house will accommodate 100 bats, and divert the scrapped materials from the landfill. The battery covers also make great nesting boxes for wood ducks, which General Motors has previously set up at its Milford, Michigan Proving Ground. Last weekend was the Silvretta E-Auto Rally, which saw emissions-free vehicles cross the Montafon Mountains in Austria, including cars from Mercedes-Benz. These cars included the B-Class Electric Drive, B-Class F-Cell, SLS AMG Electric Drive and even the Smart Fortwo Electric Drive. Also on hand for the Silvretta Classic Rally was a V8-powered C111, a 1978 Mercedes-Benz 450 SLC and 300 SL Roadster. Read more in the press release, below. BMW has finalized pricing for the i8 in the US at $135,700 (plus $925 in destination charges). In addition to the base price tag, which we've known for a while, BMW Blog has the complete pricing guide with options and packages. Most of the i8 orders were the Pure Impulse World package, which includes various aesthetic upgrades. It also provides membership to the BMW i Pure Impulse Program, which allows you to "to enjoy innovative ideas and trends in a variety of areas, including home styling, culture, gourmet gastronomy, design and many more." Head over to BMW Blog for more information. The new generation of the Hyundai Sonata Hybrid will arrive later than the rest of the model lineup, confirms Car and Driver. While the gas-powered Sonatas get updated now for the 2015 model year, the Hybrid remains unchanged until late this year or early 2015, when it will arrive as a 2016 model. Hyundai is offering a 2015 Sonata Eco edition, but with 28 miles per gallon in the city and 38 mpg highway (32 combined), it's not quite as appealing as the current Sonata Hybrid's 36/40/38 figures. Read more here. In June, average US fuel economy was 25.5 miles per gallon, making it the fifth straight month above 25 mpg, according to University of Michigan. The average window sticker ratings from vehicles sold in June dropped slightly from 25.6 mpg in May. The year started at 24.9 mpg in January, and hasn't dropped below 25 mpg since.

Infiniti went out of its way to make the QX30 not a Mercedes

You can complain all you want about perceived badge engineering when a company (like Mercedes-Benz) sells a platform to another brand (such as Infiniti). The reality is that most buyers won't know the difference, and they won't even realize their Infiniti is really a Mercedes underneath or that their neighbor's GLA has the same basic parts as the QX30 they just bought. What's weird to me isn't that sameness, but the places where the two cute little utes differ. These two vehicles, which are more like tall hatchbacks, use the same Mercedes 2.0-liter turbo four and seven-speed dual-clutch transmission. Infiniti adds its own throttle and transmission calibrations. The suspension design is the same, although there are tuning differences. Both come standard with front-wheel drive, with all-wheel drive an option. Fuel economy matches for the FWD models, while the AWD Infiniti lags behind the Mercedes for some reason. So they're very similar despite their different looks. And design makes sense as a point of differentiation. Frankly, they go further than a lot of vehicles on shared platforms do – further, in fact, than the upcoming Nissan Navara-based Mercedes X-Class pickup does. The QX30 has its own sheetmetal and glass to separate it from the GLA-class. You probably think one looks better than the other. If you know where to look, the signs of sameness are obvious. Most major systems and pieces are shared, like the steering wheels (with different center covers), most switchgear, and things like interior and exterior door handles. Shared parts are fine as long as the parts are good ones. On that note, how many Tesla buyers realize their steering column and stalks, plus the window switches, come from Mercedes? And does that actually matter? We'd argue no. About those differences. Many are functional, like the fact the Infiniti does not carry over the Benz's Brake Hold feature – when you roll to a stop in the GLA (or any other Benz), pressing the brake pedal firmly applies the electric parking brake until you hit the gas to move again. The QX30 has an electric parking brake, but no Brake Hold feature. Someone used to driving Mercedes models will look a bit silly standing on the brake pedal to no effect. Ask us how we know. The Mercedes gauge package is carried over, but with the Infiniti font. Makes sense, although it's off-putting at first if you've seen the original, prompting a weird deja vu. Circular dash vents are replaced by rhomboid ones.