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2020 Cadillac CT4-V, CT5-V revealed, less powerful than predecessors

Expectations have reached stratospheric heights for the 2020 Cadillac CT4-V and 2020 Cadillac CT5-V, and for good reason: Their ATS-V and CTS-V predecessors were potent sports sedans with gobs of power and handling and braking to match. Now the new sedans have been revealed, and they're not what we expected. They each lose two cylinders compared with the other vehicles, and on paper, they don't look as capable. But we do have hope that these won't be the end-all, be-all performance Cadillacs. First, let's look at the cars. The CT4-V will be the base of the V brand, and it's our first look at the small luxury sedan. It has a roofline and window treatment more like past Cadillacs, eschewing the C-pillar garnish of the CT5. It also naturally gets dark trim and headlights, a unique spoiler and quad tailpipes to distinguish it as a V. Under the hood is a turbocharged 2.7-liter four-cylinder that is based on the engine in the new Chevy Silverado. It makes 320 horsepower and 369 pound-feet of torque, a far cry from the ATS-V's 464 horsepower and 445 pound-feet of torque. Cadillac CT4-V View 12 Photos Power goes through a 10-speed automatic transmission only. Both rear-wheel drive and all-wheel drive are available. It gets a mechanical limited-slip differential whereas the ATS-V had an electronically controlled limited-slip differential a la Camaro ZL1. The brakes have four-piston calipers at each corner versus six-piston front units and four-piston rear units on the ATS-V, and the rotors are smaller. Magnetic Ride Control remains standard on the rear-drive version, but the all-wheel-driver version sticks with conventional shocks. The new CT4-V is about 200 pounds lighter than the ATS-V, though, and it has 50/50 weight distribution. Additionally, both the CT4-V and the CT5-V have Super Cruise available as an option. Moving on to the CT5-V, it looks like a regular CT5 but with dark trim and lights, quad tailpipes and a unique rear diffuser. Instead of the CTS-V's 640-horsepower supercharged V8, the CT5-V uses a twin-turbo 3.0-liter V6 making 355 horsepower and 400 pound-feet of torque. Changes made to the 3.0 for the CT5-V include a new intake system and new exhaust, and it revs higher too. Like the CT4-V, it comes with a 10-speed automatic and either rear-wheel drive or all-wheel drive. It does get the electronically controlled limited-slip differential.

Why an independent rear suspension for GM's new, full-sized SUVs wasn't easy

A Motor Trend report last month laid out how Cadillac's 4.2-lier twin-turbo Blackwing V8 could be an orphan due to cost concerns in the GM empire. Last-minute chassis changes to Cadillac's new sedans and XT6 crossover led to engine bays that couldn't fit the Blackwing. On the SUV side, according to the report, the new independent rear suspension for big people haulers cost so much to implement that GM ruled out reworking the Escalade to accept the Blackwing. At least one commenter rightly asked how could a suspension swallow that much money. A new piece in Motor Trend has the answer. The excellent Alissa Priddle spoke to Tim Herrick, GM's executive chief engineer for full-size trucks, about why the clean-sheet IRS cost "multimillions of dollars."  First, GM would need to build a new body shop at the Arlington, Texas plant that assembles the automaker's big SUVs to stamp the numerous wholly new parts and panels accommodating an IRS. Then GM would need to design and pay for a new assembly process. On top of those up-front costs, there was the incremental cost of the four-link IRS components being more expensive than those in the trucks' former leaf-sprung solid axles. Herrick endured so many rejections for so long that he remembers the date and time when he got approval for the new unit. He said it came down to a meeting where he told a higher-up, "I'll make you a deal: If we get to the reveal, or if we launch this and you think this was a dumb idea, I'll hand you my badge and let you walk me out." Head to Motor Trend to read the full story. Based on Herrick being on stage to help present the new SUVs to the press, and on our First Ride in the new Chevrolet Tahoe and Suburban at GM's Milford Proving Grounds, it appears this will have a happy ending for all involved. Furthermore, since Herrick worked on the T1 platform that supports the big SUVs as well as the light- and heavy-duty pickups, he understood the demands on the commercial side, too. That could be why when Roadshow asked Tim Asoklis, chief engineer of the Tahoe and Suburban, if the new IRS could endure life in the Chevrolet Silverado and GMC Sierra, Asoklis answered, "Oh, absolutely." Related Video:    

Cadillac adds torque-number badging to most new models starting in 2020

Few phrases describe huge swaths of America better than a phrase spotted on the back of a top-fuel dragster at an NHRA event: "You can never have too much horsepower or ammunition." If Cadillac CEO and wily Canuck Steve Carlisle has his way, the revised phrase would substitute "torque measured in Newton-meters" for "horsepower." Starting with the 2020 model year, America's luxury brand will add torque figure badges to CT and XT models, beginning with the XT6. The badge above kinda almost sorta represents the torque produced by the luxury crossover's 3.6-liter V6. That badge did not appear on the XT6 we photographed at the Detroit Auto Show. In U.S. parlance, twist in the XT6 comes to 271 pound-feet. Translated to Newton-meters, that's 367 Nm. Then round that up to the nearest 50, which Cadillac will do, and one arrives at 400. True, the rounding prevents a future of number jumbles like the 2020 XT6 367 vs. the 2021 XT6 419T. Nevertheless, we don't know why Cadillac is rounding to the nearest 50 instead of the nearest 25, since 50 Nm is about 37 lb-ft and could conceal a decent torque increase between model years. A "T" denotes turbocharging, and we imagine there'll be designations for hybrids and electric cars. We think most modern attempts at engine-based nomenclatures soon get as complicated as ciphers or come unmoored from their original scheme. And based on our experience with The Average Car Buyer, they don't care. A bigger number, no matter what that number represents, means more, which is the important thing. Because America, right? Maybe not. Carlisle said, "We're not talking about displacements any more," and the new badging will give consumers "a clear understanding of the power differences across the lineup." The brand believes torque provides a better comparison between ICE, hybrid, and EV powertrains and "the balance between fuel economy and performance." As for the immigrant unit of measurement, Carlisle told CNET, " It's metric, it's universal, it's global, we have to think about all the markets that we're doing business in." Oh, and, "Engineers certainly prefer Newton-meters." The new nomenclature will not be applied to V-series models or the Escalade, because the CEO holds that "special cars get special names." We should probably take a moment to reassure the CT and XT models that Steve Carlisle thinks you're all special, too. Just a different kind of special.