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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.

Renault-Nissan rejig how they manage Daimler partnership, sources say

PARIS — The Renault-Nissan-Mitsubishi alliance is set to scrap a role overseeing ties with Daimler in favor of individual relations with the German group, three sources told Reuters, as they try to better manage a partnership that has not met initial hopes. The shift comes as alliance-level executive Jacques Verdonck, who was in charge of the cooperation with Daimler, retires at the end of the month, the sources familiar with the matter said. France's Renault will instead rely on its head of partnerships, Sandra Gomez, while Nissan will do the same with Catherine Perez. Mitsubishi will also have a person in charge of partnerships, the sources said, adding the bilateral approach was in line with the new "leader-follower" strategy of the alliance. That involves leaning on the strengths of each carmaker in certain areas. Renault and Daimler declined to comment, while Nissan could not immediately be reached for comment. The plan marks another shift following the end of the Carlos Ghosn era at the alliance. The architect of the Franco-Japanese partnership, who also extended the collaboration to Daimler, was arrested on financial misconduct charges in Japan in late 2018, before fleeing to Lebanon in 2019. He denies any wrongdoing. His exit strained already difficult relations between Nissan and Renault, which are now working to get back on track with cost-saving joint production projects among other steps. The partnership with Daimler - which owns high-end brand Mercedes-Benz, contrasting with the more accessible models produced by the others - has also looked in danger of losing steam. Nissan and Renault, both hit by losses, recently sold down their stakes in the German group. Collaborations on Renault's compact Twingo car and Daimler's Smart model are set to end, and some targets for industrial cooperation have been downgraded over the years. But Daimler still has a factory in Mexico with Nissan, and has been exploring the possibility of jointly developing at least one large van model with Renault. An industry shift towards electric vehicles could yet yield other opportunities, one of the sources said. "The collaboration with Daimler is at present made up of Renault-Daimler projects, Nissan-Daimler ones and some between the three," another of the sources said, with yet another saying that the changes reflected a more pragmatic approach.

2015 Mercedes-Benz SLK250 Quick Spin [w/video]

We car writers tend to have a occupationally limited focus. Autoblog's stock in trade is automotive news and new car reviews, which often steers us towards forgetting existing models about 17 minutes after we've driven it a second time. You guys like reading about the new hotness, too, so it tends to work out. But the wonderful fact is that every car sold today will have a rich/interesting/heroic/tragic life for years to come. And, occasionally, even obsolete makes and models stay interesting. That was my thinking when this 2015 Mercedes-Benz SLK250 came into our fleet. Set to be replaced with the SLK300, with that car's 2.0-liter turbo'd engine, the 250 is already running out the clock in Mercedes dealerships. What's more, my test car came complete with – are you ready for this? – a six-speed manual transmission. I can't tell you the last exact model of Benz that I'd driven with a stick shift, but I can assure you that its engine was carbureted. Considering the odd spec and replacement timeline, my question, as I drove the SLK for a week: was this a unicorn destined to be a driver's dearest find? Driving Notes: Let me not bury the lede any more: the six-speed isn't a game changer for the SLK. Yeah, over the course of a few days I came to be comfortable with the slightly vague clutch and notchy shifter, but I didn't love it. I went blasting on a few back roads, and found the hand-shaker more involving to use than the standard auto, but it was long to throw and not overly precise when I moved up and down between second, third, and fourth. On the other hand, the old 1.8T under the SLK250's bonnet still felt well matched with the base SLK's boulevardier mission. Output of 201 horsepower and 229 pound-feet of torque doesn't give enough gumption to move the hardtop German lump with authority, but it was still enough to be quick off the line and offer easy highway passing. The turbo four didn't sound bad under full throttle, either, but it did rattle like old plumbing when idling in the driveway. Speaking of rattling: the adjustable and Airscarf-equipped seats did a lot of it. (Airscarf, you'll recall, is M-B's brand name for an in-seat fan that blows hot air on your neck; it's nice on a cold day.) Though comfortable and mildly bolstered, the driver's chair made all kinds of funny noises when I got in, got out, or cornered over 20 miles per hour. That's rough for a luxury car with 6,000 (or so) miles on it.