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Stop-start standard in four-cylinder 2015 Chevrolet Impala

Chevrolet has announced that it will include stop-start technology as standard in the entry level 2015 Impala. The result is a nearly five-percent improvement in city fuel economy, also known as one mile per gallon, up to 25 mpg, combined. The 3.6-liter V-6 Impala will not feature stop-start. The 2015 Impala comes equipped with Chevrolet's 2.5-liter Ecotec four-cylinder engine, which will also offer 22 mpg in the city, and 31 on the highway. The 3.6-liter V-6 Impala will not feature stop-start and the mild-hybrid eAssist model from the 2014 MY, which got 29/25/35 combined/city/highway mpg, has been discontinued. Chevrolet spokesman Chad Lyons told Green Car Reports that not even one percent of the 2014 Impalas purchased were the Eco model. So Chevy is trying something different. With a seamless driving experience in mind, the new Impala's stop-start tech features software that governs under what conditions the feature will activate. The engine won't shut off if the car has not reached a speed of six miles per hour, so the start-stop won't be cycling during traffic jams. It can also fire the starter even if the engine has not come to a full stop, which quickens reaction time, particularly in instances of what Chevrolet calls "change-of-mind events." The stop-start function uses information about cabin temperature and humidity as well as battery charge to help determine whether or not to shut off the engine. The 2015 Impala has been engineered to reduce NVH, which will also help create a smoother stop-start experience for occupants, Chevy says. Motor mounts have been updated, and a burlier starter motor will help restart the engine after a stop. The Impala follows the 2014 Malibu as Chevrolet's second vehicle to feature stop-start tech. The four-cylinder model currently makes up over 30 percent of Impala sales. The 2015 Impala will be available beginning this summer, with a base MSRP of $27,735 (including destination charges). And while one MPG isn't a huge difference, neither is the price increase of just $50 for a bit of eco-minded innovation. Read on for more details in the press release below. Chevrolet Makes Stop/Start Standard in 2015 Impala Technology improves city fuel economy by 5 percent 2014-05-22 DETROIT – Stop/start technology will be standard on the 2015 Impala base 2.5-liter ECOTEC® engine, an addition that improves the vehicle's city fuel economy by nearly 5 percent, or one mile per gallon.

GM recalls 55,000 trucks, SUVs for separating axles, fuel pump failures

General Motors issued four separate recalls covering eight of its truck and SUV models for issues related to fuel pump and half-shaft failure. In total, the four campaigns include more than 55,000 vehicles spread out over three brands and six model years, but they've sorted themselves neatly into two categories. Let's dive in.  Axle separation Four models are being recalled for potential axle separation: The 2023 Cadillac XT5, 2023 GMC Acadia, 2023 Chevy Blazer and 2023 Chevy Traverse. The number of units affected is incredibly small (10 units each times two recalls, for a total potential population of just 20 cars). In each case, a small number left the factory with half-shaft assemblies that may have been missing the retention rings that keep them in place, possibly allowing the axles to separate or eject from the transmission. In the case of the XT5 and Acadia, it's the right-side axle assembly; Chevy dealers, however, will have to check the left side.  Fuel pump failure Again, we have multiple vehicles being recalled for similar issues, but in this case they're a bit more distinct. The first of these recalls covers the 2021-2022 Chevy Equinox and 2022 GMC Terrain. GM says a supplier-initiated change may have led to fuel pumps shipping with inadequate clearances to allow for the prescribed flow of fuel, meaning the pump could starve the engine. Customers experiencing the issue may see a check engine light and experience engine hesitation. In some cases, the cars may not start at all. Chevy and GMC will replace the units in question with correctly specified pumps.  The second recall covers a fairly specific cross-section of GM's HD truck lines. 2017-2019 Silverado and Sierra HD trucks sold with the diesel engine and a dual-tank configuration may have shipped with a rear fuel pump that is susceptible to fouling by debris, preventing fuel from properly transferring to the front tank, or, in extreme cases, resulting in a collapse of the rear tank. This issue can lead to inaccurate/erratic fuel tank readings, engine hesitation, a check-engine light or failure to start.  In both cases, GM will inspect and replace faulty units free of charge for customers. Expect notifications to be delivered by March.  Related video: Recalls Cadillac Chevrolet GMC Ownership Safety Truck SUV

Chevy EN-V 2.0 coming to Tianjin Eco-City in China

Chevrolet is bringing its EN-V 2.0 to the Sino-Singapore Tianjin Eco-City in China to show off the "Electric Networked-Vehicle" and demonstrate sustainable urban mobility. The small, two-seat EV concept is an updated version of the original EN-V, a vision of getting around in a future world where space is at a premium and clean air is a priority. So what better place to showcase the evolved EN-V than at the Tianjin Eco-City? The Eco-City is being developed as a planned urban space with eco-consciousness built in. The joint venture between China and Singapore offers an alternative to country living and smog-filled cities. Tianjin Eco-City, slated to be completed by 2020, will be able to offer 350,000 inhabitants clean air and water, renewable energy, green transportation and living spaces and, if all goes as planned, jobs for 50 percent of the residents. Currently, only about three square kilometers of the planned 30 square kilometers have been built, with only about 6,000 permanent residents, but there's still time. The EN-V 2.0, as the "Networked" part of its name suggests, not only features mobile internet, but can communicate with other cars around it. Along with GPS and built-in sensors, this connection between vehicles allows the car to drive autonomously (at least in theory - again, there's still time). This is ideal in an urban environment where congestion can be a major issue. The EN-V 2.0 improves upon the original concept with climate control, storage space and all-weather capability, which also make life more bearable and daily commuting possible. We first saw renderings of the updated vehicle in 2012. The Chevrolet EN-V 2.0 will be used in the Eco-City's National Animation Industry Park and Eco-Business Park of the course of the two-week demonstration. Read on below for more in the press release from GM. GM to Demonstrate Chevrolet EN-V 2.0 in Tianjin Eco-City SHANGHAI – General Motors today announced that it will begin demonstrating the Chevrolet EN-V 2.0 (Electric Networked-Vehicle) in the Sino-Singapore Tianjin Eco-City this week, signaling the company's learning and progress in sustainable urban mobility. The demonstration will help GM further understand consumers' usage of low-speed transportation tools for their daily commute. During the two-week demonstration period, the EN-V 2.0s will be used in the National Animation Industry Park and Eco-Business Park inside the Sino-Singapore Tianjin Eco-City.