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Cadillac CT6 PHEV battery shape a big departure for GM's plug-in hybrid tech

Anyone with any familiarity with the electric powertrain details for the two General Motors plug-in hybrids will have noticed that the information we have about the newly announced Cadillac CT6 plug-in hybrid has a lot of numbers in common with the Chevy Volt and the Cadillac ELR, like the 18.4-kWh lithium-ion battery pack and an expected all-electric range of 37 miles. We also noticed that the announcement calls the plug-in CT6 hybrid an actual plug-in hybrid and not an "extended range electric vehicle (EREV)," which is what GM calls the Volt and the ELR. This, of course, means we needed to ask GM some questions. Donny Nordlicht from Cadillac communications told AutoblogGreen that while the Volt and CT6 batteries are both 18.4-kWh, the shape is completely different. In the Volt/ELR, the battery is T-shaped (see it here). The CT6 has four seats, with a tunnel running between the two in the rear, as you can see here, but the battery in the CT6 PHEV is "a cube-shaped pack, which is between rear seats and the trunk," Nordlicht said. "There is no pass through." GM has not yet released any technical schematics about this pack, but Nordlicht said that, "The CT6's advanced mixed-material platform was designed to accommodate the PHEV system by design so that it minimally intrudes on the cabin space." It also means that the CT6 can be ordered as an optional PHEV, while the Volt and ELR were purpose-built plug-ins. GM is also distinguishing between the EREV and PHEV powertrains in its vehicles from this point forward. "We are not discarding the EREV language," Nordlicht said. "The CT6 utilizes a two-motor system mated to a 2.0T 4-cylinder engine, which is an all-new system to Cadillac." We assume that the PHEV packs will use li-ion cells from LG Chem, just like the EREVs do, but Nordlicht did not answer our question on that point. As for other details about the CT6 PHEV – like production, full dimension, and pricing – we will just have to wait until closer to when the vehicle launches for those. Related Video:

GM executive chief EV engineer says reducing cost of plug-in vehicles is 'huge priority'

As we know, another major automaker investing heavily in electrified vehicles is General Motors, and it's doing things much differently than rivals BMW, Ford or Nissan. The Chevrolet Volt extended-range EV is a modest seller at its $35,000 sticker price but a huge hit with owners. The Chevy Spark BEV, still in limited availability, puts smiley faces on its owners and drivers. The just-introduced Cadillac ELR, a sharp-looking, fun-driving $76,000 luxocoupe take on the Volt's EREV mechanicals, has admittedly low sales expectations. With this interesting trio in showrooms and much more in the works, the third vehicle electrification leader I collared for an interview at Detroit's North American International Auto Show (see #1 and #2) was Pam Fletcher, GM's executive chief engineer, Electrified Vehicles. ABG: Why do your EREVs need four-cylinder power to extend their range when BMW's i3 makes do with an optional 650 cc two-banger? "We designed [the Volt and the ELR] to go anywhere, any time" - Pam Fletcher PF: I get that question all the time: why not something smaller? You don't really need that much. You use the electric to its ability, then you just need to limp. But we designed those cars to go anywhere, any time, and we don't want their performance to be compromised. If you're driving through the mountains, we don't want you to be crawling up grades, or to be limited on any terrain. So it's optimized to be able to travel literally the biggest grades and mountain roads around the globe at posted speeds. Because what if you can't? Another good reason: when the engine is on, you have to run it wide open throttle, max speed, most of the time. And while we can do a lot with acoustics, and the ELR has active noise cancelation, a small-displacement, low cylinder-count engine at high speed, high load all the time isn't something you want to live with. That's how we came up with the balance we did among the key factors of performance, NVH [noise, vibration and harshness] and range. ABG: Where you go from here? Is the range-extender engine due for an update? PF: We know and love the current Volt, and there is still a lot of acclaim about it, so we think it's a good recipe. But we are heavily in the midst of engineering the next-generation car, which I think everyone will love and be excited about.

Daily Driver: 2016 Cadillac ATS-V Sedan

Daily Driver videos are micro-reviews of vehicles in the Autoblog press fleet, reviewed by the staffers that drive them every day. Today's Daily Driver features the 2016 Cadillac ATS-V sedan, reviewed by David Gluckman. You can watch the video above or read a transcript below. And don't forget to watch more Autoblog videos at /videos. Show full video transcript text [00:00:00] Hey, it's David Gluckman with another Daily Driver. Today I'm driving a 2016 Cadillac ATS-V. This is the sedan model and it has the optional eight-speed automatic transmission. The ATS-V is the small performance car in Cadillac's lineup. It sits below the CTS-V, which is also new for 2016. Ever since the base ATS came out a few years ago, this has always been a wonderful chassis in search of a great engine to compliment it. This car really changes that. [00:00:30] They've dialed up the chassis, the suspension is a little stiffer, the body is even stiffer, and they've put this really nice 3.6-liter twin-turbo V6 engine under the hood. In terms of power and torque, the new V6 outguns it's main bogey, the BMW M3 and M4. The Cadillac engine puts out 464 horsepower and 445 pound feet of torque, which is tons. [00:01:00] The one issue, though, is the way it delivers that power. It's not as smooth as the BMW and there's a bit of turbo lag that you really don't feel in the German engine. Once you get moving, however, this engine really just wakes up. There's no lag once you're at highway speed. You can floor it and there's plenty of power and torque for easy passes and runup to extra-legal speeds. [00:01:30] It's tons of fun there but around town it just kind of lacks a little bit of the smoothness and responsiveness that we're kind of expecting for a car in this class. The engine does sound pretty nice, though. It has this nice little growl when you start it up and when you get on it, it actually sounds more like a supercharged engine than a turbocharged one. It's a little strange, I think that's maybe some active noise cancellation that Cadillac is doing to cancel out the whooshes and whirs that we're used to from a turbocharger. [00:02:00] That's fine with me. Whatever it is, it sounds good. This car gets the same fancy rear limited-slip differential that the Corvette introduced a couple years ago. It does a really good job of keeping everything manageable. You almost can't tell that the car has 464 horsepower. It keeps everything in line.