Bentley Motors plans to end production of its 12-cylinder engine next April as the famed luxury carmaker transitions to electric vehicles. The British automaker of ultra-luxury performance cars said the milestone would be celebrated with the most powerful version of the W12 engine ever created, with 740 horsepower and 737 pound-feet of torque. Bentley said the upgraded engine will only be used in 18 Bentley Baturs — handcrafted two-seat performance cars that start at about $2 million. The vehicles are already sold, the prestigious automaker said. “The time has come to retire this now-iconic powertrain as we take strides toward...