The 2004 Infiniti Q45 is a part of the third generation of Infiniti's flagship sedan. Its rear-wheel drive layout is powered by a 4.5-liter V8 engine that delivers 340 horsepower, paired with a quick-shifting 5-speed automatic transmission. Offered in two trims, base and Premium, the Q45 comes with an impressive list of standard features, including adaptive cruise control, a navigation system with voice recognition, and a rearview camera. Safety features in the Q45 include side-impact and side-curtain airbags, front active head restraints and an advanced airbag system for front-seat passengers. One of the highlights of the 2004 model year was the updated exterior styling, featuring a revised front grille and rear tail lamp design, which builds on the vehicle's sophisticated and powerful appearance.