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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 374,500 vehicles because of Takata inflators

The Basics: Mazda will recall 374,519 examples of the 2003-2008 Mazda6 manufactured from May 29, 2002, to May 5, 2008; the 2006-2007 Mazdaspeed6 built from July 1, 2005, to June 29, 2007; and the 2004 RX-8 made from June 25, 2003, to June 30, 2003. The Problem: These vehicles contain front passenger airbag inflators from Takata that could rupture in a crash. If this happens, it could spray metal shrapnel at an occupant, which could seriously injure or even kill the person. Injuries/Deaths: The report from the National Highway Traffic Safety Administration didn't mention injuries or deaths, but Autoblog reached out to Mazda for confirmation. Takata's rupturing inflators allegedly have links to nine deaths globally and around 100 injuries. The Fix: Mazda dealers will replace the passenger side airbag with a new one. If You Own One: Mazda has not said when the replacements for these vehicles will begin. Experts believe that prolonged exposure to high humidity can cause the inflators' ammonium nitrate propellant to ignite too quickly in an accident. More Information: This recall is a nationwide expansion of Mazda's passenger's side airbag recall, which was previously limited to high-humidity regions. The population now includes 310,592 additional examples of the Mazda6, Mazda spokesperson Tamara Mlynarczyk tells Autoblog. The company discovered this new issue after Takata tested an inflator taken from a Mazda6, and it ruptured, according to NHTSA documents (PDF). The company already had a national safety campaign to fix the driver's side airbags in these vehicles. Related Video: RECALL Subject : Passenger Air Bag Inflator May Rupture Report Receipt Date: DEC 23, 2015 NHTSA Campaign Number: 15V869000 Component(s): AIR BAGS Potential Number of Units Affected: 374,519 All Products Associated with this Recall Vehicle Make Model Model Year(s) MAZDA MAZDA6 2003-2008 MAZDA MAZDASPEED6 2006-2007 MAZDA RX-8 2004 Details close Manufacturer: Mazda North American Operations SUMMARY: Mazda North American Operations (Mazda) is recalling certain model year 2003-2008 Mazda6 vehicles manufactured May 29, 2002, to May 5, 2008, 2006-2007 Mazdaspeed6 vehicles manufactured July 1, 2005, to June 29, 2007, and a limited production of model year 2004 RX-8 vehicles manufactured June 25, 2003, to June 30, 2003. The inflators in the front passenger air bags are susceptible to rupture in the event of a crash necessitating the deployment of the front passenger air bag.

Mazda CX-5, Mazda6 and Mazda3 could stall due to software glitch

Mazda is recalling 262,220 vehicles due to a software error that could cause the engine to unexpectedly stall out. The recall affects 2018-2019 CX-5 crossovers, 2018-2019 Mazda6 sedans and 2019 Mazda3 models.  According to NHTSA recall No. 19V497000, which was filed June 27, a programming issue in the powertrain control module (PCM) on select Mazda vehicles could cause the engine to shut down. More specifically, "the software controlling the hydraulic valve clearance adjuster may operate improperly when transitioning from cylinder deactivation to full cylinder activation modes." This could potentially cause the intake valve rocker arm to come out of position and hit something else in the engine. If this occurs, the engine could misfire, the engine could lose power, and the Malfunction Indicator Light would be triggered. The recall affects 143,004 2018 CX-5s, 81,236 2019 CX-5s, 18,295 2018 Mazda6s, 2,551 2019 Mazda6s, and 17,134 Mazda3s. Some cars from those model years received the improved software at the factory and won't be affected by the recall. Although the first report of a related issue was chronicled in January 31, 2018, no injuries tied to the problems have been reported. Mazda is expected to start its recall on or before August 26, 2019, and will reprogram the PCM with improved hydraulic valve adjustment control programming for free. Contact Mazda at 1-800-222-5500, reference No. 3719F, for more information.