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Cadillac tops Tesla in Consumer Reports semi-automated driving test

General Motors' Cadillac outscored Tesla in a new ranking of partially automated driving systems tested by Consumer Reports and released on Thursday. The highly influential nonprofit organization, which tests and rates a variety of consumer products from appliances to vehicles, said it compared Cadillac's Super Cruise and Tesla's Autopilot with similar systems from Nissan and Volvo. Nissan's ProPilot Assist was ranked third and Volvo's Pilot Assist fourth. Consumer Reports said it has been testing partially automated driving systems for several years but elected to conduct a formal study intended for publication, because "we are at a tipping point where they are now going mainstream," according to Jake Fisher, director of auto testing. The organization said its tests, conducted on a private track and on public roads in Connecticut, were designed to measure the systems' ability to automatically control steering and speed in certain situations, while helping drivers pay attention and regain manual control of the vehicle when required. CR noted that any of these systems can increase driving risk if used in inappropriate situations, or if drivers become inattentive or over-reliant on them. While they can help relieve driver stress and fatigue, Consumer Reports said, the partially automated systems are "not intended to be self-driving features." The systems typically use cameras, radar and other sensors, as well as mapping data, to monitor location and traffic conditions and help keep a vehicle centered in the lane at a safe distance behind other cars. Each system has limitations. Cadillac's Super Cruise, for instance, only functions on divided highways that have been mapped by GM. In contrast, Tesla's Autopilot can be used even on small, curvy roads with poor lane markings, but "operates erratically in those situations," Consumer Reports said.The organization tested Super Cruise on the Cadillac CT6; Autopilot on the Tesla Model 3, Model X and Model S; ProPilot Assist on the Nissan Leaf and Infiniti QX50; and Pilot Assist on the Volvo XC40 and XC60. Consumer Reports said Cadillac's Super Cruise did "the best job of balancing high-tech capabilities with ensuring the car is operated safely and the driver is paying attention." Tesla's Autopilot was cited for its capability and ease of use, while Nissan's ProPilot Assist did a better job than Autopilot or Volvo's Pilot Assist in keeping drivers engaged.

If Cadillac’s smart, the CT5 will be a CTS without baggage

Cadillac is, mercifully, about to rationalize its lineup, something that's been a long time coming. The CTS is one of those cars that gets admiration from reviewers, like us, for a concerted effort from GM to engineer an underlying platform that matches the Germans in terms of raw dynamics. From buyers, it gets not even a shrug as they, oblivious to its existence, walk right into BMW and Mercedes dealerships. The reasons for this have a lot to do with the sheer brand recognition, and the image, of the German competitors. You can't really lay that all at GM's feet, but what you can do is critique the uninspired drivetrain selection. The 3.6-liter V6 is a crude implement, making its 335 horsepower roughly. The BMW's equivalent inline six makes its power smoothly, with modern forced induction. There's no directly comparable E-Class sedan until you get into the V-Sport versus E43 situation, but the turbo four is smooth. And the interior? No question. The Mercedes is jaw-slacking. The story for the CTS's turbo four is largely the same. Some blame also has to be leveled at the first- and second-generation CTS sedans, which adopted an odd strategy: sell a slightly larger sedan to folks looking at 3-Series, A4, and C-Class, but at about the same price. Folks weren't interested in a larger car for the same money. Despite the third-gen CTS's growth into the 5-Series size class, the CTS still seems like an odd in-betweener in the sport luxury segment – psychologically, if not physically. CTS sales are in the toilet in 2017, and GM is smart to shake things up. So with the announcement that Cadillac head honcho Johan de Nysschen has finally been allowed to kill off underperforming models, the CTS is toast. (As is the ATS, and much more importantly, the XTS – a shambling dinosaur of a sedan.) What's next is the CT5, and that's what we're interested in now. Cadillac has until 2019 to figure out what the CT5 actually is. That isn't a lot of time, so our money is on it being a repositioned, rationalized CTS. The platform's not bad; it's heavier than the larger CT6, but it's fairly modern. Sadly, it's unlikely that any of the standard powertrain options will get a revamp, but maybe some additional sound deadening or an active engine mount system to reduce NVH will quell the V6's bad habits. View 32 Photos More importantly, Cadillac will get a chance to work on the interior look, almost certainly aligning it more closely with the much improved CT6. That'll help a lot.

GM extending warranties on Cadillac CTS-V and Chevy Camaro ZL1 for supercharger issue

Okay General Motors, we've sat by and watched you recall the compact cars, crossovers and pickup trucks, and aside from reporting on it, we've been fairly quiet. This, though, this will not do. We can almost tolerate the recalls on the bread-and-butter cars, but leave the performance vehicles alone.
According to a report from The Car Connection, GM has discovered a problem with the superchargers of the 6.2-liter V8s found in the Chevrolet Camaro ZL1 and the Cadillac CTS-V. Apparently, the issue rests around the internal bearing shaft grease, which can become contaminated (we aren't sure with what). If left unchecked, it'll first lead to a rattle at idle, which goes away under slight throttle. The real warning stage is when a high-pitched squeal develops, signaling that the bearing shaft has failed. Naturally, severe engine damage is the next step (although it's possible that the engine will also just refuse to turnover, although neither case is desirable).
According to TCC, GM will replace the superchargers on vehicles that have exhibited symptoms of bearing shaft failure free of charge. It will also, allegedly, be extending the warranty on all supercharged ZL1s and CTS-Vs to 10 years or 120,000 miles (whichever comes first), from the date of purchase. Officially, only 2009 to 2013 CTS-Vs and 2012 to 2013 ZL1s are suffering from this issue.