The Dodge Nitro comes in both a 4x2 and a 4x4 version, which can be had as either Heat, Detonator, or Shock trim. The Heat trim is equipped with a 210-hp 3.7-liter V6 engine mated to a four-speed automatic transmission. The Detonator and Shock trim features a more powerful 260-hp 4.0-liter V6 engine mated to a five-speed automatic transmission. Nitro's Heat trim offers standard amenities such as power mirrors, windows and door locks with remote keyless entry, satellite radio, air conditioning and seating for five. The Detonator adds rear-park assist, remote start system, power driver's seat, cruise control and an overhead console with a trip computer, compass and exterior temperature display. The Shock adds heated front seat, leather trim interior, and power sunroof. Standard safety features include: front airbags, side curtain airbags, active head restraints, traction and stability control with roll-over mitigation, brake assist, and a tire-pressure monitor.For 2010, the Nitro has three new model designations: Heat, Detonator, and Shock.