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2015 Mercedes-Benz ML400 Quick Spin

Mercedes-Benz has taken a risk in its quest to downsize its engine range. For 2015, the brand's popular M-Class five-passenger CUV did away with its trusty 4.4-liter, twin-turbocharged V8, and has replaced it with a 3.0-liter, twin-turbocharged V6. It's no surprise that power is down thanks to this move. Outputs of 402 horsepower and 443 pound-feet of torque are replaced by 329 hp and 354 lb-ft, but weight is down significantly as well. The new ML400 is nearly 300 pounds lighter than the 4,982-pound ML550. Will that tradeoff be enough to satisfy a buying public that's embraced falling fuel prices by buying bigger and thirstier vehicles? To find out if the blown V6 is a suitable replacement for the twin-turbo V8, we spent a week at the helm of the all-new ML400. Driving Notes This 3.0-liter, twin-turbocharged V6 is the same engine being offered in the C400 and E400 sedans. Typical of today's turbocharged engines, peak torque is spread lavishly across the rev range, from 1,600 to 4,000 rpm. That's not as generous a spread as the ML550, which offers all its torque between 1,600 and 4,750, but the power on offer is easy to access. Importantly, the new V6 never feels flat-footed or unable to answer our commands. In fact, the ML400 feels even quicker than its six-second sprint to 60 would indicate, although it's not so fast as to challenge the 5.3-second time of the ML550. After a slight and expected bout of turbo lag, the power arrives suddenly and proceeds linearly until just south of the engine's 6,500-rpm redline. The throttle response is soft in Eco mode, as expected, but sharpens up slightly when the fuel-sipping mode is off, where the gas pedal is still easy to modulate. It's a quiet engine, too. Compared to the brawnier exhaust note of the old ML550 or the howling six-cylinder in the BMW X5 xDrive35i, the ML400's note is smooth and refined, befitting of a V6. Its turbocharged nature is instantly noticed, though. Get on the throttle and the 3.0-liter happily hisses its way up the tachometer. But, it's only when you get on the throttle hard that the engine really weighs in. In day-to-day driving and traffic its soundtrack is unobtrusive and relaxed. The EPA rates the ML400's fuel economy at 18-miles-per-gallon city and a 22-mpg on the highway. That's better than the 14 city and 19 highway of the old V8 ML, but it still seems a bit low, especially for the highway figure.

Vettel hopes to pull off some Ferrari 'tricks' to end Mercedes F1 dominance

MONTREAL — Sebastian Vettel says Ferrari has a few tricks up its sleeves for this weekend's Canadian Grand Prix and will need to conjure up something special if it is to end Mercedes' magical run. Six races into the season, Vettel is not ready to wave the white flag and concede the title to Mercedes, which has racked up six straight wins, five of them with 1-2 finishes. But the German admits the battle had reached a critical juncture. "The next races will be really crucial for us to try and get back to the front and give a much harder time to Mercedes," said Vettel, who finished second in Monaco last month for Ferrari's best result so far this season. "It will be crucial to do it rather sooner than later, but at the moment I am not too fussed, I am not looking at, 'OK this is the date.' "Clearly we are behind, clearly there is a big margin between Mercedes and the rest and we have to lose that gap and get ahead otherwise it will be difficult to turn around. "That is as much realism as you can get."Vettel won from pole position in Canada last year and Mercedes has suggested the high-speed circuit could again favor Italian rivals whose season has yet to get into gear. But Mercedes drivers Lewis Hamilton and Valtteri Bottas will like their chances as well on the Circuit Gilles Villeneuve. Hamilton was fastest in Friday's early practice, but damaged his car when he hit the wall in the afternoon. The five-time world champion sits 17 points clear of Bottas at the top of the standings and in his bid to equal Michael Schumacher's seven Canadian Grand Prix victories between 1994 and 2004. Not that Mercedes needed another boost, but Hamilton and Bottas will have new and upgraded engines in their cars for this weekend's race. Ferrari has already introduced its first upgraded powerplants of the season, but Vettel was optimistic tweaks to the car would benefit them on a circuit that plays to some of their strengths. "There is always little tricks you can do, the question is whether they make a difference," Vettel said. "But I am not sitting here trying to paint things black we haven't done a single lap this weekend so I am quite optimistic it was a strong track for us last year. "We have some tricks up our sleeves whether they work or not we will see.

Brabus rockets the Mercedes S65 to 900 horsepower

Some people you just can't please. They take a look at a vehicle with 621 horsepower and 738 pound-feet of torque on tap – one of the most powerful cars money can buy – and say that's still not enough. Fortunately there are companies like Brabus that cater to just such individuals. The Mercedes tuner extraordinaire brought the Rocket 900 to the Geneva Motor Show this year. It's based on the S65 AMG – yeah, the one with the twin-turbo V12 – but takes it a step or ten further. For starters, Brabus has bored the engine out to 6.3 liters and hooked up new turbochargers, exhaust, intake and more – cranking output up to 887 hp and a mind-bending 1,106 lb-ft of torque. Of course it didn't stop there, revising everything from the limited slip differential and air suspension to aero kit and interior. The result? Try 0-62 in 3.7 seconds, a 217-mile-per-hour top speed and a price tag approaching $400,000. Related Video: Featured Gallery Brabus Rocket 900: Geneva 2015 View 16 Photos Related Gallery Mercedes-Benz S65 AMG Brabus Rocket 900 View 30 Photos Related Gallery 2015 Geneva Motor Show Videos View 25 Photos Image Credit: Live photos copyright 2015 Drew Phillips / AOL Aftermarket Geneva Motor Show Mercedes-Benz Luxury Performance Sedan 2015 Geneva Motor Show Brabus mercedes s65 amg brabus rocket 900