market as part of Mazda's standardized global naming structure. Designed from 2015 to late 2016 under the lead of Yasutake Tsuchida, the model is slightly lower and longer than before, with its wheelbase stretched by . The exterior design of the sedan and hatchback models are heavily differentiated, with both models only sharing the hood and headlights, while front wing fenders and front doors are designed uniquely for each body styles. Its body uses an increased amount of ultra-high-strength steel 980 MPa or higher to 30 percent of the vehicle body, an increase over the 3 percent in the prior generation. Mazda has swapped the more sophisticated multilink independent rear suspension from its predecessor for a cheaper and more compact torsion beam setup which is claimed to improve the car's quietness, along with the added sound deadening materials. To enhance the vehicle's NVH, Mazda included a 'two-wall' structure that leaves space between the body and carpeting on the floor. The model is also equipped with an updated version of the torque vectoring system marketed as the G-Vectoring Control Plus. Interior materials are upgraded with a stitched dash pad, metal trim for the climate control knobs and central infotainment controller, a new steering wheel design, and a newly developed 8.8-inch display screen with a redesigned Mazda Connect system interface. A dark red leather upholstery color is offered for the hatchback model. In North America, the Mazda3 has all-wheel drive an available option for the first time. Production of the model in Thailand at the AutoAlliance Thailand in Rayong started on 28 August 2019. Engine and transmission In some markets, the fourth-generation Mazda3 can be equipped with a spark-controlled compression ignition engine, called the Skyactiv-X. The 2.0-liter Skyactiv-X engine initially produced and of torque, though its updated version, dubbed e-Skyactiv-X, and launched at the beginning of 2021, produces in Japan and in other markets, with the torque being augmented to . The 1.5-, 2.0- and 2.5-liter versions of the current Skyactiv gasoline engine line is offered, as well as the 1.8-liter Skyactiv-D diesel engine. Transmission options consist of the 6-speed Skyactiv-MT manual and the Skyactiv-Drive automatic. Initial release in North America only included the 2.5-liter petrol engine. Mazda introduced an all-wheel drive version of the 2.5-liter turbocharged gasoline engine for model year 2021 which is exclusively mated to a six-speed automatic transmission. In the Australian market, the fourth-generation Mazda3 along with the