The term 'Mars Vehicle' can be broken down into two crossword solutions: ROVER (5 letters) and Dents (5 letters). ROVER is a type of robotic vehicle used to explore the surface of Mars. It is designed to traverse the terrain, collect data, and send it back to Earth. Dents is a type of spacecraft that was launched by the European Space Agency in 2003. It was designed to study the atmosphere and climate of Mars, as well as to search for evidence of past or present life on the planet.