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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.

GM under fire from safety advocates over braking problem caused by recall fix

Safety experts are lambasting General Motors over what they say is the automaker’s slow notification of owners of certain 2019 sedans and trucks that a recall fix could cause power braking to fail and increase the risk of a crash, the Detroit Free Press reports.  GMÂ’s original recall in December targeted about 550,000 Cadillac CT6 sedans and Chevrolet Silverado 1500 and GMC Sierra 1500 pickups, all from the 2019 model year, over potentially defective electronic stability control and antilock brakes. In that case, GM said the errors would not show up as a diagnostic warning on the instrument cluster. But after GM had done recall work on 162,000 vehicles, about 1,700 owner have complained that their power brakes didnÂ’t work after they had the recall done and then used the OnStar app to start their vehicle. GM then issued a supplemental fix for customers whoÂ’d already had their vehicles serviced. In this case, a diagnostic warning should illuminate saying either “Service Brake Assist” or “Service ECS,” which GM says is a signal that a customer should not drive the vehicle and instead call their dealer, which will tow the vehicle and have it repaired. Safety advocates say the automaker hasnÂ’t gone far enough to protect customers. “The fact that you could potentially start a vehicle and not have brakes is a pretty risky proposition,” Sean Kane, president of the Safety Research and Strategies, which works on auto issues for plaintiffs and governmental organizations, told the Freep. “The fact that they wouldnÂ’t notify owners (sooner) is pretty stunning.” GM told the Freep it was required to notify the National Highway Traffic Safety Administration and file paperwork before it notified customers about the original recall, which was made Dec. 12. It then had to investigate and resolve the problem created by its original recall fix before alerting customers. GMÂ’s call center and dealers are contacting the remaining 900 customers who havenÂ’t yet had the update made to the original recall repair. GM also hired a vendor to send recall letters to the 550,000 customers affected by the original recall notifying them about the update. There are no known injuries or deaths related to the problem. Read the Freep story here.

2016 Cadillac CTS-V arrives with 640 hp, 200-mph top speed

Ask the company's executive team, and they'll tell you "this is the maximum Cadillac V-Series." It's the 2016 CTS-V sedan, and it packs the very best of what's possible at Cadillac. And the company says it doesn't think "anyone thought it was possible that we could push [the CTS-V] this far." The big news is what's underhood: General Motors' supercharged, 6.2-liter LT4 V8, tuned to 640 horsepower and 630 pound-feet of torque. That's 10 hp and 20 lb-ft less than the monstrous Corvette Z06, and the result is the most powerful car Cadillac has ever produced. With rear-wheel drive, launch control and the eight-speed automatic transmission (sorry, folks – no more manual transmission here), Cadillac says the 2016 CTS-V will sprint to 60 miles per hour in just 3.7 seconds, on its way to a top speed of 200 miles per hour. Naturally, Cadillac's engineers say they have tuned the CTS-V to ensure it can put all that power to the ground with the most precision and poise possible. That starts with the excellent Magnetic Ride Control active damping system (with a claimed 40-percent increase in responsiveness)and a 25-percent increase in structural stiffness that should improve overall handling and steering. What's more, a high-performance Brembo brake package comes standard, as do 19-inch alloy wheels wrapped in seriously sticky Michelin Pilot Super Sport tires that will reportedly offer 1g in lateral acceleration. Cadillac also says that all changes to the bodywork are functional. That includes a carbon-fiber hood, front splitter, rear spoiler and diffuser that are super light and aid with aerodynamics and weight reduction – all of which will be available as an optional package for folks who like the exposed carbon look. Inside, it's more of what we're used to on lesser CTS models, but there's newly optional carbon fiber trim, microfiber suede upholstery trim, and some seriously awesome Recaro seats. Additionally, as we exclusively reported earlier, Cadillac will offer GM's Performance Data Recorder in the CTS-V. It records high-definition video with data overlays that's sharable via social media. Beyond that, Cadillac will offer the usual smattering of tech goodies, including Siri Eyes Free, OnStar with 4G LTE, CUE infotainment with navigation and Bose audio. The CTS-V will launch later next year, following the debut of the smaller ATS-V. In the meantime, the sedan will officially bow at the 2015 Detroit Auto Show in just a few weeks.