Infiniti is often the automotive brand of understated luxury. The Infiniti models of the past were just as luxurious as a BMW or a Lexus, but they never achieved the same type of success. The Q45 was the flagship Infiniti sedan for many years and is considered one of the best sports sedans on the market if you ask enthusiasts (via Consumer Reports).
The driving technology and dynamics that went into the Q45 are part of the reason the car was so popular. The V8 engine was smooth as silk, and the Q45 is a reliable car. The best part is that you can find the Q45 for a very affordable price tag on the used market. Most of the time, these cars have been well cared-for and have low mileage.