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Mazda G-Vectoring Control makes driving better without you knowing

Mazda has just spent eight years developing a new technology that will make its new cars a lot more fun to drive, even if you have absolutely no idea that it's working. And subtlety's the point, Mazda engineers told us at a press event at Mazda Raceway Laguna Seca. In fact, the effects of what they've dubbed G-Vectoring Control are so fine that the marketing and PR teams are at a loss for how to do their jobs with it. "The engineers have done their work," said Mazda Director of Communications Jeremy Barnes, "But how do we get the message across?" The basic premise is this: G-Vectoring activates only when the car's on-board computer reads simultaneous steering and throttle input. The data — including throttle position, steering angle, and, crucially, how quickly you're adjusting the steering angle — are then funneled through an algorithm to reduce engine torque, which transfers vehicle weight, adding more grip to the wheels that need it. The system will appear first on 2017 Mazda6 sedans arriving in showrooms later this year, followed by the 2017 Mazda3. Actually, "subtle" does not even begin to describe the effect. G-Vectoring Control can detect as much as one tenth of one degree of steering angle, and changes the cornering forces only 0.1 to 0.5 g as a result. "That's less than the human body can feel," explained Vehicle Development Engineer Dave Coleman. In practice, G-Vectoring reduces the steering angle at turn-in, as well as the rate at which one turns the wheel. To demonstrate, Director of R&D Kelvin Hiraishi rode shotgun with us in a specially equipped Mazda6 that allowed him to turn G-Vectoring on or off at the push of a button (production cars will always have it on). Hiraishi had us drive a number of courses, including Mazda Raceway Laguna Seca itself, while an engineer measured our steering inputs with a laptop Matrix'd into the car's electronic brain. I drove the same course several times with the same car in the same conditions, with cruise control locked and the system turned on or off. Lo and behold, with G-Vectoring activated, the engineer's output graph showed that my steering inputs were indeed reduced ever so slightly. There were two times that G-Vectoring was markedly noticeable. The first on a turn with a minor banking toward the outside, and the second was during cornering over an artificially wet section of the course — in other words, when the car was at the limits of adhesion.

Mazda recalls 2019-2020 Mazda3 for errant activation of emergency braking system

The newly redesigned Mazda3 has been subject to numerous recalls since it went on sale for the 2019 model year. Today brings news of another such occurrence, as Mazda recalls 35,390 2019-2020 Mazda3s (sedans and hatchbacks). This recall is related to the automatic emergency braking system equipped to certain models. According to Mazda, affected vehicles may “unexpectedly stop while driving due to inadvertent activation of the Smart Braking System automatic emergency braking system.” The programming of the systemÂ’s software could cause the Mazda3 to “falsely detect an obstacle in front of the vehicle while driving.” In response to that detection, the software may automatically apply the brakes despite no collision being imminent. We donÂ’t have to explain how dangerous that could end up being for the driver and those around them. Your car slamming on the brakes for no reason could easily be the cause of an accident. As of now, Mazda says no injuries or deaths have been reported as a result of the defect. In case you havenÂ’t experienced the system in your Mazda3 yet, there is something to look out for. Mazda says a warning alarm will sound and a warning message will appear in the instrument cluster and head-up display when the car is about to perform an emergency stop. Mazda said that itÂ’s reported the defect to the NHTSA, but it hasnÂ’t been posted on the website yet. The fix is easy for some, but more difficult for others. Vehicles with early build dates will need the whole instrument cluster replaced or reprogrammed, as these cars have a different procedure for "temporary manual deactivation of the Smart Braking System." These early build cars will also receive a new owner's manual to reflect the revised procedure of temporary manual deactivation of the system. Later cars will only need the Smart Braking System software reprogrammed with an improved version. Mailings to owners for notification purposes should be completed on or before February 17 next year.

Automakers are offering more fuel-efficient cars than ever

Even with gas prices near their lowest point in more than a decade, Americans are still concerned about the fuel economy of their cars. More than 4 in 5 consumers say gas mileage will be an important consideration the next time they go shopping for a vehicle, according to the results of a new survey conducted by the Consumer Federation of America, which were released Monday. That's no surprise, says Jack Gillis, director of public affairs for the nonprofit organization. "Consumers have had a long history with volatile gas prices," he said. Though motorists have saved approximately $12 billion this year at the pump compared to 2015, according to AAA, car shoppers expect gas prices to rise again in the future. The average respondent to CFA's survey predicted a price of $3.50 per gallon within the next five years, a figure in line with projections made by the US Energy Information Administration. When those consumers visit dealerships, they'll have plenty of options. More models than ever are achieving 30 miles per gallon or more, according to CFA's annual analysis released in conjunction with the survey, and 15 of 16 major car companies improved their fuel efficiency on their 2016 model-year offerings. Only Ford backslid year over year, per the report. Researchers say American consumers are now enjoying the widest range of fuel-efficient options ever offered, in every vehicle class. Of 1,094 models on sale in 2016, 13.4 percent achieved more than 30 MPGs, an improvement from 11.7 percent in 2015. At the same time, the percentage of gas guzzlers offered for sale has declined. The percentage of vehicles on the market that get 16 miles per gallon or less has fallen from 6.1 percent to 4 percent, says CFA. "Even if you're in the market for a large pickup or SUV, you'd have to go out of your way to find a true gas guzzler," Gillis said. ""Consumers have had a long history with volatile gas prices." – Jack Gillis These results, the CFA suggests, indicate federal standards that prod automakers to invest in fuel-efficient technology are having the desired effect. Manufacturers are keeping pace with the requirements of the Corporate Average Fuel Economy standards, which mandate carmakers achieve a standard of 52.5 miles per gallon in testing, equivalent to about 40 miles per gallon in on-road performance, by 2025. CFA's report singled out Mazda as setting an exemplary standard.