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Next Opel Insignia to adopt sleeker looks

The very first set of spy photos of the next-generation Opel Insignia have dropped, giving us a look at the more svelte, aggressive, and stylish look of the popular sedan. As a reminder, the Insignia is sold here in the United States as the Buick Regal. There's only so much we can discern from these photos, thanks to the very heavy camouflage. But we can get a look at the new Audi A7-like roofline, which our spies citing similarities to the Opel Monza concept car from the 2013 Frankfurt Motor Show. The Monza link fits with our previous reports, which claimed the gullwinged wagon would serve as a prime source of inspiration for both the Insignia and US-market Regal. Aside from the significantly redesigned sheetmetal, Opel is also increasing the size of its flagship sedan, adding nearly four inches between the axles. According to our spies, the goal is to build a vehicle comparable in size to the Skoda Superb, a roughly Volkswagen Passat-sized sedan based on the VW Group's MQB platform. What's most interesting for US customers, though, is the body style shown here. Like the aforementioned A7, the next Insignia will be offered as a five-door model, rather than a traditional sedan. The five-door hatch would later be joined by a traditional wagon. It's unclear whether the US market Buick will take a similar route, or whether General Motors will demand a four-door variant exclusive to North America. Check out the spy photos above, and keep an eye open for more on the next Insignia/Regal. Don't plan on seeing it at an auto show any time soon, though. It's not slated to debut until the 2017 Frankfurt Motor Show.

2016 Buick Cascada marks the return of casual convertibles

Buick is reentering the convertible game after a 25-year absence with this, the long-awaited 2016 Cascada. Fans of General Motors' European operations will recognize this svelte, four-place droptop as a rebadged version of the critically well-received Vauxhall/Opel Cascada, a model that has been on sale to audiences across The Pond since 2013. The Cascada will once again give American car buyers the chance to buy a relaxed, affordable two-row convertible without sporting pretensions, an option that arguably hasn't been available since the demise of the Chrysler 200 droptop. For US duty, the softtop Cascada will arrive with a 1.6-liter, direct-injected, turbocharged four-cylinder that churns out 200 horsepower. That figure is paired up with 206 pound-feet of torque, which can be bumped to 221 lb-ft via an overboost function. A six-speed automatic will dispatch that power to the front wheels, which are managed courtesy of a HiPer strut front-suspension system. While the Cascada might share its front suspension with the setup found on the Regal, its torsion-beam rear suspension has more in common with the Vauxhall/Opel Astra (and Buick Verano) on which it's based. 20-inch wheels and an electric power-assisted steering system round out the convertible's handling hardware. Of course, we doubt most Cascada customers will care about such oily and unseen things. Instead, they'll be more focused on the droptop's sheetmetal, which, considering it's basically a convertible version of the extremely handsome Astra, should win the car at least a few fans. While we only have so much detail to work with in the images that have been released so far – we'll be seeing the Cascada firsthand this evening (Sunday), so check back tonight for additional live images later today. Naturally, the Vauxhall/Opel grille will be replaced by Buick's trademark waterfall grille, although the company's other big styling calling card, portholes, are absent from our current pair of shots. A wide chrome strip stands out on the rear, tying the taillights together and increasing the Cascada's resemblance to the Regal sedan. A single oval exhaust tip juts out from the driver's side rear bumper. In terms of its actual dimensions, the Cascada's wheelbase is less than half an inch longer than the Verano, while the droptop is an inch longer than its four-door counterpart overall. At only an inch wider, meanwhile, the Cascada will enjoy the same easy to manage footprint as Buick's entry-level sedan.

GM warning 800,000 owners that their cars may need oil changes more frequently than they say

The days of changing your engine oil every 3,000 miles are long gone thanks to most cars having automatic oil monitoring systems, but about 800,000 General Motors vehicles apparently have incorrect monitoring software that is leading to premature engine component wear. According to Autoweek, certain 2010-2012 Buick LaCrosse, Regal, Chevrolet Equinox and GMC Terrain models equipped with 2.4-liter four-cylinder engines could be going too long in between oil changes resulting in a higher-than-normal number of warranty claims for the engine's balance chain. The balance chain links the balance shaft to the crankshaft, and a worn one can produce higher noise levels.
As a fix, GM dealers will be reprogramming the software for the monitors in an effort to reduce the interval between oil changes, which varies based on driving habits and conditions. Through February 2015, the software update will be done at no cost to vehicle owners, but since this is not a recall, after that point, it will be up to the discretion of dealers as to whether or not they will charge for the service. What isn't immediately clear is whether GM plans on giving assistance to out-of-warranty customers who are experiencing engine issues from the worn chain.