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2020 Cadillac CT4 Review & Buying Guide | Cadillac recommits to the small sedan

The 2020 Cadillac CT4 is a brand-new entry into the baby luxury sedan space, replacing the ATS. With an excellent rear-wheel-drive chassis and a performance-oriented “V” trim (to be topped by a yet-wilder “Blackwing” model), the CT4 is aimed at the enthusiast end of the segment. Cadillac fields the lone American entry in this class, meaning the CT4Â’s main competitors — the Audi A3, BMW 2 Series Gran Coupe and the Mercedes-Benz A- and CLA-Classes — are all European. However, since it's a bit bigger than those and features a rear-wheel-drive platform (all-wheel drive is available), it's hardly an apples-to-apples situation. The Genesis G70 is perhaps a closer comparable. In any event, the CT4 is a compelling, American alternative that delivers excellent comfort, interior quality and driving dynamics at a price that strongly challenges the various competitors from Europe. What's new for 2020? The Cadillac CT4 is new for 2020, alongside the bigger CT5. You can check out our first drive of the hot CT4-V model for more on CadillacÂ’s new sedan strategy. 2020 Cadillac CT4 View 4 Photos What's the CT4's interior and in-car technology like? The Cadillac CT4 packs the sort of high-quality materials and convenience features one expects from an entry-level luxury model. The seats are comfortable and supportive, and in higher-end models, the front buckets are offered with heat, ventilation and massage features. The CT4 also boasts what GM calls a “sound-optimized” interior coupled with active noise cancellation and amplification to mitigate unpleasant frequencies and enhance desirable ones. In all, we find the CT4Â’s interior much more compelling than that found in other recent Cadillac products such as the new XT4 crossover. The infotainment system is controlled by an 8-inch touchscreen with an optional rotary-control interface. The base setup includes Android Auto, Apple CarPlay and Amazon Alexa integration and offers USB Type-A and Type-C connectivity and charging. Upgrades include navigation and multiple Bose audio packages, all of which bring with them wireless device charging. How big is the CT4? Like many of CadillacÂ’s previous sport sedans, the CT4 is a bit of an oddball size-wise for the segment it targets, stretching more than a foot longer than the Audi A3 and nearly 9 inches longer than the BMW 2 Series Gran Coupe. However, this doesn't translate into a comparable interior space advantage because of the CT4 rear-wheel-drive platform.

Combine a self-driving car with V2V, and here's what happens

Transportation engineers have started laying the groundwork for a traffic world in which cars communicate with other cars and infrastructure like bridges and traffic lights. How about an environment in which cars talk to pretty much everything and everyone? In a preview of its offerings at the upcoming Consumer Electronics Show, Delphi Automotive will deploy just such a concept. Engineers have designed a system that communicates with traffic signals, street signs, pedestrians, cyclists, even to fry pits and parking garages along a driver's route. To date, engineers and researchers across the auto industry have focused on the technical and safety-oriented foundation of future vehicle-to-vehicle communications, which could help cars share information about everything from traffic tie-ups to upcoming road hazards. Beyond those building blocks, many have projected that V2V could also include more consumer-focused features. Delphi's system, dubbed V2Everything, might be the first that combines those sorts of features in a tangible package. At CES in Las Vegas, scheduled to begin the first week of January, company officials say they'll demonstrate in real-world conditions how V2V technology can be used in an autonomous vehicle to provide a range of critical safety information and leisure and convenience options for riders. The first V2V technology installed on a production car is slated to appear on the 2017 Cadillac CTS. "We imagine a world with zero traffic accidents," said Jeff Owens, Delphi's chief technology officer. "To get there, we will need a convergence of active safety, sensor fusion, connectivity platforms and advanced software." Such software might allow a vehicle to start searching for and reserving parking spots at a programmed destination long before arriving. It could allow riders to place their McDonald's drive-through order from the road and have the food ready for pickup along the route. For the drive itself, the Delphi-equipped car can stay updated on the status of traffic lights around Las Vegas, and can anticipate yellow and red lights. Using smart-phone technology, the car can detect pedestrians and cyclists that may otherwise be hard to see. It can send messages to friends or family to notify them of a driver's location. Some of those features have been available on third-party apps or individually developed by automakers. But this system marries them together in a single system that is tailored for use in self-driving cars.

Here's how Cadillac made its Magnetic Ride Control suspension quicker and smarter

Bugatti makes the world's fastest car, but Cadillac claims it has developed the world's fastest suspension. Its fourth-generation Magnetic Ride Control technology receives hardware and software tweaks to deliver a more comfortable ride and sharper handling. It's offered on some variants of the CT4, CT5 and the Escalade. Introduced in 2002 on the Seville STS, this self-adjusting suspension is not as complicated as it might sound. It relies primarily on electromagnets that emit a magnetic field, and a magnetorheological fluid whose viscosity changes depending on the strength of the magnetic force. Sensors scan the road up to 1,000 times per second and send the information they gather to the electromagnets, which then alter their magnetic field as needed to modify the fluid's viscosity. The fluid is in the shocks, so making it thicker returns a firmer ride, and vice versa. In simpler terms, Magnetic Ride Control leverages chemistry and physics to make the ride sporty, comfortable, or somewhere in between -- all in the blink of an eye. By reacting to the changing magnetic field, the fluid-filled shocks filter out road imperfections and maximize tire contact with the road to deliver more precise handling. Cadillac began developing the fourth-generation system by improving the hardware. The in-wheel accelerometers are more accurate than before, the inertial measurement unit is more precise, and the damper fluid formula was changed for quicker response times and a smoother ride. Engineers then turned their attention to the system's software. They notably gave the sensors the ability to process a wider selection of input and output signals, which translates to a wider spread between comfort and sport. And, they made the response time up to 45-percent quicker. All told, the fourth-generation Magnetic Ride Control technology performs better under heavy braking and hard cornering, it delivers more consistent performance, and it reads the road more accurately. Cadillac proudly notes these are the most comprehensive updates it has made to the system in nearly two decades. Magnetic Ride Control comes standard on the 2021 CT4-V and the 2021 CT5-V, and it's bundled into the CT5's V Performance package, which also includes a mechanical limited-slip differential. It's also standard on the Sport and Platinum variants of the 2021 Escalade, and it's part of the Premium Luxury trim's Performance package.