1997 Mazda Mpv 4wd Only 67k Miles Turbo Diesel Previa Mpv Jdm on 2040-cars

Auto blog

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.

2020 Toyota Yaris hatchback is basically the Mazda2 hatchback

The Toyota Yaris line in the U.S. has been really weird, what with the hatchback coming from Toyota, and the sedan coming from Mazda a rebadged Mazda2. For 2020, the Toyota Yaris line is still weird, but at least its consistent as the hatchback is also a rebadged Mazda2. And as far as styling is concerned, that's all there is to say. The front bumper is the the same angry catfish face as the Yaris sedan, and everything rearward comes from the Mazda2 that's available overseas and in Puerto Rico. The interior is the same as the Mazda2, and very similar to the Mazda CX-3. The switch to the Mazda platform has added 0.3 cubic-feet to the cargo space over the old Toyota version. Under the hood is the familiar 1.5-liter inline-four making 106 horsepower. Disappointingly, the only transmission available will be a six-speed automatic, whereas the current sedan is available with a six-speed manual transmission. But having six speeds is a massive improvement over the outgoing Yaris's ancient four-speed automatic. Fuel economy hasn't been announced, but expect it to get close to the Toyota Yaris sedan's 32 mpg in the city and 40 on the highway. This will be another improvement over the old Yaris hatch's 30 mpg in the city and 35 on the highway. Unlike the sedan, the new Yaris hatch will only be offered in LE and XLE trims, leaving out the base-level L. Every version of the car gets alloy wheels, heated side mirrors, fog lights, keyless entry with push-button start, automatic emergency braking and an infotainment system with seven-inch touchscreen and Apple CarPlay and Android Auto. Moving up to XLE adds leatherette upholstery, leather-wrapped steering wheel and shifter, automatic climate control and automatic LED headlights. Pricing and availability haven't been announced, but it will likely go on sale later this year with a starting price around $17,000 like the Yaris LE sedan.

Mazda hard at work on Skyactiv 2 engine technology

As Mazda continues the current rollout of its still-new Skyactiv technology, the automaker is already looking at improving its family of engines for even better fuel economy and emissions reductions. Automotive News reports that with stricter fuel economy and emissions regulations planned for 2020 and 2025 in Europe, Mazda will likely release engines with next-generation Skyactiv 2 technology by the end of this decade, and Skyactiv 3 units just five years later.
The latter is expected to focus on improved engine cooling and lessening energy losses, but the big news in AN's report is that the next-gen Skyactiv 2 engines will use Homogeneous Charge Compression Ignition, or HCCI. This type of ignition is very similar to how a diesel engine operates (with high compression and using the compression stroke for fuel combustion rather than spark plugs), a method said to provide a cleaner and more efficient fuel burn - to the tune of a 30-percent improvement in fuel economy compared to current Skyactiv engines. Other automakers, including Hyundai, have already announced they are developing HCCI powerplants with similar technology and characteristics, so Mazda likely won't be a lone wolf here.
Equipped with HCCI technology, Mazda figures to be able to compete with larger automakers in terms of fuel economy and emissions without resorting to hybrid powertrains, continuously variable transmissions or automatics relying on more forward gears (eight or more) for optimal efficiency. Some of the challenges of HCCI, according to AN, include the need for better engine cooling, risk of misfire at high and low rpm and uneven engine performance based on fuel properties.