The FX37 has a 325-horsepower 3.7-liter V6 engine. It is available in three models: FX37 RWD, FX37 AWD and FX37 AWD Limited Edition. The top-of-the-line FX50 AWD with a standard 390-horsepower 5.0-liter V8 and INFINITI Intelligent All-Wheel Drive is also offered.