Past Infiniti Q45 models and suspension parts.

The first Q45 came to market in 1989 as a 1990 model, impressing those who valued distinctive style and performance, thanks to its 278-hp, 4.5-liter V8. In fact, it was one of the first Japanese luxury sedans to blend better-than-average performance with luxurious trimmings and simple-but-elegant styling. It's not an overstatement to say the Q helped redefine the modern luxury sedan. The Infiniti Q45 offered two flavors initially -- base and Q45t. The Q45 rear air suspension touring package had chassis upgrades, a rear spoiler, BBS alloy wheels and HICAS four-wheel steering. The 1991 Q could also be had with a semiactive suspension (the Q45a). Due in part to a notoriously suspect, product-free initial advertising campaign, however, there weren't enough potential buyers turning into actual buyers. The Q45a model was dropped in 1996. (If you do find yourself looking at a Q45a, know that its active suspension components are complex and will require additional maintenance.

In an attempt to increase sales and profitability, the second-generation Q45 adopted a more sober philosophy and moved to a new mainstream platform in 1997. Along for the ride were a more conventional appearance and a smaller, less-inspiring 4.1-liter V8 producing 266 hp. The original car's all-multilink air ride suspension morphed to include struts up front, and was further tuned for a comfort bias. But none of this did much to help the car's sales, as they remained far below its competitors.

The sedan's appearance evolved again in 1999 with restyled sheet metal, HID headlights up front and an analog clock again gracing the dash; 17-inch wheels and an electronically adjustable suspension were standard on the Q45t. All Q45s of this era included a leather-lined cabin with exotic wood grain trim, Bose/CD audio and driver-seat/steering wheel position memory; a sunroof and heated seats were also available. The 2000 Q45 Anniversary Edition trim level was the flagship of the line, and the anniversary model was replaced by a Luxury trim in 2001. At the time, we said that the second-generation Infiniti Q45 offered luxurious appointments, stylish sheet metal and a relatively low price. A Q of this vintage will probably work best for those drivers primarily interested in a luxury sedan that can provide a quiet and comfortable highway ride.

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