1998 Buick Century Custom Sedan 4-door 3.1l on 2040-cars

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GM claims it's first to sell million 30+ mpg vehicles

As we continue to put together all the data for the year-end edition of By The Numbers, General Motors has announced that it sold more than a million vehicles in the US last year that achieved at least 30 miles per gallon on the highway. More impressively, GM managed this feat using multiple strategies including small vehicle size, turbocharged engines and hybrid or plug-in technologies across four brands (Buick, Cadillac, Chevrolet and GMC) accounting for 13 separate models. This number will grow even more in 2013 thanks to cars like the all-electric Spark, the diesel Cruze, the range-extended Cadillac ELR and the Buick Encore compact CUV.
GM's small car sales were up 39 percent last year helping to attain this million-sales mark for 30-mpg models, and almost 40 percent of all GM sales consisted of cars with fuel-efficient I4 engines. In regards to more advanced means of improving fuel economy, GM says that it plans on having 500,000 vehicles with "some form of electrification" on the road by 2017.
Scroll down for the full list of GM's million 30+ mpg cars as well as an informative press release.

Buick Envision crossover to premiere in China

Buick currently offers two crossovers: the compact Encore and the extra-large Enclave, leaving plenty of room to slot a mid-size crossover in between. And that's just what Buick is planning on doing. In China, anyway.
Previewed in the teaser above, Buick's upcoming new crossover is cloaked and nestled in between its aforementioned stablemates-to-be. Set to be unveiled in China sometime later this year, the model has been confirmed to wear the name Envision - at least in that market. That's the name which the concept version wore three years ago, but we're still waiting on word over whether that name will carry over to the US version or whether we should expect something different like Anthem. But we have to admit that Envision fits better in the brand's crossover naming scheme.
Shanghai GM isn't saying much about the Envision in the press release below, aside from it having "dynamic and assertive styling" backed by all-wheel drive and stop/start ignition. The last time Buick offered a mid-size crossover in North America was with the Pontiac Aztek-based Rendezvous that was discontinued seven years ago.

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.