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Cadillac ATS sedan is in its last year

Cadillac has just confirmed that the ATS Sedan dies at the end of the 2018 model year. In an e-mail to CarBuzz, spokesman Donny Nordlicht wrote, "Production of the ATS Sedan is ending due to extensive plant upgrades, expansion and re-tooling to prepare for the next generation of Cadillac sedans." The admission confirms several months of deduction based on a document trail put together by The Truth About Cars. Last December, TTAC reported that General Motors didn't list a 2019 Cadillac ATS sedan on VIN documents submitted to the National Highway Traffic Safety Administration. Only the coupe remained, the presumption being that 2018 would be the last year for the sedan. That presumption was bolstered by industry sleuth Bozi Tatarevic's discovery this week that GM hasn't included the ATS sedan in the carmaker's fleet order guide. The death of the four-door ATS won't surprise anyone paying attention to statements from Cadillac or ATS sales figures. Brand then-president Johan de Nysschen strongly hinted last summer that three sedans would bite the dust come 2019, and one would be refreshed. We've seen the gussied-up CT6, so that put the XTS, CTS, and ATS in the funeral home. The XTS would die an unavenged death, while the CTS downsized into the properly midsized CT5 and targeted buyers in the $35,000 to $45,000 range, overlapping with $34,595 ATS sedan pricing by doing so. The ATS would go on hiatus, eventually resurrected as a compact luxury offering possibly called CT3 in coupe form and CT4 as a sedan sometime around 2020. As for the market situation, ATS sales are up 7.3 percent in the U.S. through the end of April this year compared to 2017. However, the ATS sold only 13,100 units in the U.S. in 2017, compared to 21,505 units in 2016 and a high of 38,319 in 2013, its first full year on sale. Assuming new Cadillac president Steve Carlisle stays the predicted course, GM might keep the ATS Coupe as a lure to sporty buyers in the segment until a possible CT5 coupe arrives. Otherwise, Nordlicht's e-mail said "Cadillac's future sedan portfolio will consist of three sedans, positioned in different segments and clearly differentiated by size and price." The 2019 ATS Coupe will stick with its three current engines, the 2.0-liter turbo with 272 horsepower and 295 pound-feet of torque, the 3.6-liter V6 with 335 hp and 285 lb-ft, and the 3.6-liter twin-turbo V6 in the ATS-V with 464 hp and 445 lb-ft of torque.

GM patent reveals new two-stage turbocharger

Modern turbochargers may be some of the best ever made, but performance is something that engineers are always trying to improve. According to GM Inside News, General Motors (GM) is hoping to alleviate some of the negative aspects of a two-stage turbocharger setup with a newly-patented design. The patent, that was filed on May 19, 2016, reveals a clever bypass system that allows the engine, a four-cylinder unit, to optimize both the low-pressure and high-pressure inlets for its respective functions. According to the filing, a conventional two-stage turbocharger setup is engineered to allow both turbines to operate simultaneously at low and mid engine speeds. At high engine speeds, only the low-pressure turbine works. The setup can't isolate either the low or high pressure side, which can impair low-end performance. GM's new two-stage turbocharger setup looks to eliminate this by linking the high-pressure turbo to the exhaust manifold through the high-pressure inlet duct. The low-pressure turbo is attached to the high-pressure turbo by a low-pressure inlet duct, which is linked to a connecting channel. A single actuator that is housed in the exhaust manifold creates a bypass that can opens the high-pressure inlet or close the connecting channel. Depending on what the engine load and speed is, the ECU guides the actuator—a single rotating spindle with discs corresponding to flanges on the high and low pressure sides—to isolate one of the two turbos. Isolating the turbos allow the respective inlets to be engineered for the best possible fluid dynamic performance. The setup should increase performance and decrease lag. There's no word on what car this setup will make an appearance on, but it will most likely be used in premium vehicles before trickling down to the rest of GM's vehicles. Related Video: News Source: GM Inside News, AutoGuide via GM Authority Cadillac Chevrolet GM Technology Sedan turbo patent engine turbocharging

Cadillac Rear Camera Mirror | 2017 Autoblog Technology of the Year Finalist

We give Cadillac a lot of credit for being the first to make good on the promise to replace mirrors with cameras and displays. That was good enough to earn the Cadillac Rear Camera Mirror a place on our 2017 Technology of the Year awards shortlist for new features. The idea behind this system is relatively simple; what perhaps took more doing was getting the regulations in place to allow a video feed to replace the government-mandated mirror. The hardware and that rules compliance starts with what looks like a normal rearview mirror – because it defaults to being a mirror until you switch on the display or in the event the system somehow fails. Flip the little toggle at the bottom of the mirror – the one normally used to switch from day to night mode – and the reflection is replaced by a very crisp feed from a camera at the back of the vehicle. This live stream gives you a wide-angle view of what's behind, without obstruction from back-seat passengers, headrests, or any bodywork. The camera is even shielded from weather and has a coating to shed water. What you see doesn't exactly look like a normal reflection, but the quality is good enough and you see more than you would normally with something aimed through today's small rear windows. But because it isn't actually a reflection, you have to make some adjustments. When your eyes are focused down the road, glancing at a mirror gives you a view the same distance away but in the rear. With the rear camera mirror, a glance back requires your eyes to first refocus on the display, which takes a moment. And unlike a normal mirror, which you look through at an angle, this display is angled toward the driver but projecting an image that looks straight back – no matter how you move it, the image doesn't change like a mirror's would. And because it's an image and not a reflection, you can't choose what's in focus and lose your sense of depth perception. It's not clear whether objects in mirror are closer or farther than they appear. And there are other limitations. For instance, while the display balances bright lights and dark surroundings well at night, it is tricked by LED headlights, which flicker at a rate faster than the camera shoots. The result is a distracting strobe effect like you get when you point a smartphone camera at any LED light source. For those with migraine sensitivity, this kind of fast flashing can cause real problems.