 With separate twin injectors for both direct and port injection, ESTEC D-4ST could perform high-pressure direct injection into the cylinder and conventional intake port injection, or direct cylinder injection only, according to engine speed.Mated to a 6-speed automatic transmission, this engine produces at 4,800-5,600 rpm and at 1,650-4,000 rpm.The NX is the first Lexus vehicle to feature a turbocharged gasoline engine in the US market and many other markets around the globe.