The Infiniti Q45 is an outstanding value among performance luxury cars. Its powerful V8 engine delivers excellent performance and makes a wonderful growl. Like BMW and Mercedes cars, the Infiniti Q45 uses rear-wheel drive for better handling. It's balanced well for driving on twisting roads and it's very stable at high speeds. Its ride quality is firm yet sophisticated. The Q was completely redesigned last year (for 2002). For 2003, the Q45 gets a number of refinements, including a numerically higher final-drive ratio for quicker acceleration. More standard equipment has been added to both Q45 models this year. Heated front seats, puddle lamps, and a full-size spare tire are now standard on all 2003 Q45s. Premium models come standard with satellite radio and climate-controlled front seats.