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European automakers overstate fuel economy by 40% on NEDC cycle

Volkswagen is apparently not alone among European automakers when it comes to giving out funny emissions or fuel economy numbers. It turns out that pretty much everyone across the Pond is doing it. So much, in fact, that, on average, the difference between European vehicles' fuel-economy and emissions figures and real-world driving results is about 40 percent, Bloomberg says, citing a report from Brussels-based Transport & Environment. Yes, 40 percent. Mercedes-Benz was the worst offender, as the Daimler division on average overstated its vehicles' fuel economy by 48 percent, said the study, which used data from International Council on Clean Transportation (ICCT). That automaker isn't exactly a world-beater for fuel economy in the US. In fact, two of its models, the Mercedes-Benz G 63 AMG and the G550 (pictured), showed up on the American Council for an Energy-Efficient Economy's (ACEEE) annual list of cars that are "meanest" to the environment. "The information provided by manufacturers on fuel consumption is based on the NEDC test cycle, which is prescribed by law and conducted in a laboratory. Since real driving conditions generally deviate from conditions in the laboratory, the consumption figures can also deviate from the standardized figures. Since T&E has unfortunately not published the test conditions used in its study, it is not possible to provide a useful analysis of the test results," Mercedes-Benz wrote in an e-mailed statement to Autoblog. "The data pool used also does not allow a thorough scientific assessment. Mercedes-Benz emphatically supports the introduction of the WLTP (Worldwide Harmonized Light Vehicles Test Procedure). This is supposed to replace the NEDC with the aim of bringing the rated fuel consumption and the actual consumption closer together. We also actively support the dialog between industry (ACEA) and the authorities, and are in regular contact with the EPA and the ARB in the US." The ICCT is the group that helped spur the investigation that led to the Volkswagen diesel-emissions scandal we're all still talking about, so it shouldn't expect Christmas cards from the largest German automakers this year. This new study came from data taken from about 600,000 cars. That's a lot of funky air floating over Rome. The overstatements were pretty widespread, too. The fuel-economy of the BMW 5 Series was overstated by almost 50 percent, as was the Peugeot 308's.

2016 Mercedes-Benz GLC250 First Drive [w/video]

There's nothing wrong with the Mercedes-Benz GLK other than old age, having first sold here in 2009. But with creased, off-road themed styling, a naturally aspirated V6, and a smallish interior, it's out of step with the company's growing line of sport utility vehicles. Even its name is a harsh-sounding outlier. Enter the 2016 GLC. Mercedes calls this model the second generation of the GLK, but it's closer to a total reboot. The new look follows the smooth design of contemporary Benzes. The spotlight engine is now a spunky turbocharged four cylinder, and yes, the GLC is bigger inside and out. As for the name change, that's part of the latest badge realignment, and the "C" indicates the GLC's position as the crossover counterpart to the C-Class sedan. Now firmly integrated into the Mercedes SUV family, the GLC takes a seat at the table between the entry-level GLA and the larger GLE. The GLC's fresh appearance has all of the tenets of modern Mercedes design. We've come to the Alsace region of France to sample this familiar yet evolved utility vehicle. Driving along route A35, we're immediately struck by the turbo four-cylinder's prowess. It's strong from launches when we mash the gas, returns a subtle but pleasing exhaust note, and it's more than capable of picking off slower moving traffic as we dash through the French countryside. We're driving the European-spec GLC250 model, which has the same 2.0-liter engine Americans will get in the GLC300, though the Euro model has 30 fewer horsepower. The US version will be rated at 241 hp and 273 pound feet of torque, the same output as the C300 sedan. The turbo has big shoes to fill, as it gives up 61 hp to the 302-hp V6 used in the GLK. Mercedes is banking consumers won't miss this raw power, as the GLC's inline-four offers the same amount of torque as the GLK's V6, but much sooner in the rev band. Even in its detuned European state, the I4 demonstrates the kind of urgency that Americans prefer for their grocery-getting people haulers. It's paired with a nine-speed automatic transmission, upgraded from the GLK's seven-speed. There are paddle shifters, though most Americans won't have reason to use them. Sometimes we grab them and lay on the throttle just for fun, and the GLC responds with bursts of speed. Even in its detuned European state, the I4 demonstrates the kind of urgency that Americans prefer for their grocery-getting people haulers.

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.