rests above the rear axle. The implementation of the engine installation behind the front axle showed technology earlier used by Mazda in its rotary-engine powered products, primarily the Mazda RX-7 and the Mazda Cosmo. To showcase Mazda's advanced technology prowess, this iteration of the Sentia also debuted Mazda's speed-sensitive four-wheel steering system. At speeds of lower than , the rear wheels steer in an opposite (toe out) direction from the front wheels, in order to reduce the turn radius. At higher speeds they steer in the toe in direction to improve stability. Solar ventilation system is a setup where amorphous solar cells in the sunroof panel power small ventilation fans located in the trunk area, in order to cool the cabin while the car is parked in the sun. This setup would later be found on the Eunos800/Millenia. Two engines were available. Both having their roots in prior Mazda V6s, and have no relation to the aluminum KL series found in the Capella-platformed Mazdas. The 3.0-liter JE-ZE received a new variable-length intake manifold to boost its power rating to . The 2.5-liter J5-DE was also available, rated at . Two different engine displacements were offered in Japan so as to give buyers a choice between which annual road tax obligation they were willing to pay. The bigger engine was substantially better equipped with luxury features and conveniences for choosing the larger engine. 929 The HD generation of the 929 appeared in 1991, with the smaller four-cylinder engines dropped in favour of V6 engines only. It was sold as the ɛ̃fini MS-9 under Mazda's ill-fated diversification plan. There was no longer a Luce rotary version, and the Cosmo got a new platform as well. A new model, the Sentia, appeared on the same platform. In Canada, the car was known as the 929 Serenia. This was the only year to carry the Mazda "diamond" badge from 1992, and the updated "diamond" badge (a smoother version) to appear on all 1993 models. The Mazda 929 was available with ABS, full electrics, cruise, 4WS, 4WD (in some markets), as well as a 'solar vent' that vented the heat from the car. The Sentia continued for one more generation, but export of the 929 to North America stopped in 1995 with the front-wheel drive Mazda Millenia remaining at the top of the company's lineup. The 929 was withdrawn from North America due to a