Years

The Nissan Q45 was Nissan's flagship luxury sedan, sold in North America from 1989 to 2006 across three generations. It shared its platform with the Nissan President/Cima in Japan and served as the basis for the Infiniti Q45 when that brand launched in 1989. All generations used a 4.5-liter V8 engine paired with an automatic transmission. Typical strengths included a smooth powertrain, a quiet and comfortable ride, and a spacious interior.

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  2004_Q45

  Cosmetic and trim package updates were implemented for the 2004 model year. Service considerations include checking the timing components and fluid flushes, especially for the transmission and cooling system. Inspecting the brakes and suspension components is recommended due to the vehicle's age and driving profile.

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  2002_Q45

  The 2002 Nissan Q45 introduced the model's third-generation redesign, featuring a new 4.5-liter V8 engine producing approximately 340 horsepower and a five-speed automatic transmission. A sport-tuned Q45t trim was offered, along with available features such as HID headlights and a navigation system. Common service considerations include ignition coil failures, valve cover gasket leaks, and wear of suspension bushings and control arms as mileage accumulates. The engine uses a timing chain rather than a belt, so no timing belt replacement interval applies, though consistent oil changes remain important for long-term reliability.

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  2001_Q45

  The 2001 Nissan Q45 was the final year of the second-generation flagship sedan, carrying over its 4.5-liter V8 engine and four-speed automatic transmission with only minor equipment and trim revisions. It was offered in base and Q45t trims, with the t model featuring a sport-tuned suspension and additional standard equipment. Common service considerations include timing belt replacement, suspension component wear, and attention to aging electrical systems. Regular transmission fluid service and monitoring for oil consumption are also recommended on higher-mileage examples.

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  2006_Q45

  The 2006 Nissan Q45 was the final model year of the third-generation flagship sedan, offered in base and Premium trims with a 340-horsepower 4.5-liter V8 and a five-speed automatic transmission. Changes for 2006 were minimal, largely limited to adjustments in standard equipment. Common service considerations include timing chain tensioner wear that can cause startup rattle, aging electrical components in the navigation and audio systems, and routine suspension wear at higher mileage. Parts availability can also be a concern since the model was discontinued after 2006.

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  2003_Q45

  The 2003 Nissan Q45 was largely unchanged following its redesign for the 2002 model year, continuing with a 4.5-liter V8 engine paired with a five-speed automatic transmission. Trim levels included the base Q45 and the better-equipped Q45t, which added features such as larger wheels and an adjustable suspension. Common service considerations include monitoring the timing chain components, transmission fluid condition, and suspension wear, particularly on higher-mileage examples. The navigation and electrical systems from this era may also require attention as the vehicle ages.

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  1996_Q45

  The 1996 Nissan Q45 was largely unchanged from the previous model year, marking the final year of the first generation before a full redesign arrived for 1997. It was powered by a 4.5-liter V8 paired with a four-speed automatic transmission, with the Q45t trim offering a firmer suspension tune. Common service considerations include timely timing belt replacement, as the engine is an interference design, along with inspection of aging suspension bushings, hoses, and electrical components on these now nearly 30-year-old vehicles.

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  1995_Q45

  Minor updates included revisions to the interior trim and minor refinements to the electronic instrumentation. Owners should regularly inspect the suspension components, paying particular attention to bushings and ball joints. Maintaining the transmission fluid and checking the timing belt system are common service requirements for this model year. Rust remediation and brake system inspections are also routine maintenance considerations.

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  2000.0_Q45

  The 2000 Nissan Q45 continued the second-generation flagship sedan with its 4.1-liter V8 and 4-speed automatic, with only minor equipment changes for the model year. The Q45t touring model kept its adjustable hydraulic suspension, which is a frequent source of expensive repairs as these cars age. Timing belt replacement at the recommended interval is important for the VH41DE engine. Other common service items include brake components, given the sedan's roughly 4,000-pound weight, along with aging electrical and climate control systems.

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  2005_Q45

  The 2005 model year featured minor cosmetic revisions and maintained the established platform architecture. Service consideration should include inspecting suspension components, such as control arm bushings, which are prone to wear. Owners should also monitor the transmission fluid levels and performance as part of routine maintenance.

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  1999_Q45

  The 1999 Nissan Q45 was part of the second generation of Nissan's flagship luxury sedan, powered by a 4.1-liter V8 engine paired with a four-speed automatic transmission. The Q45t trim featured a sport-tuned suspension and 17-inch wheels. Common service considerations include timing belt replacement on the interference-design V8, automatic transmission fluid service, and inspection of aging suspension bushings, hoses, and seals given the vehicle's age.

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  2000.5_Q45

  The 2000 Nissan Q45 typically received minor powertrain refinements and subtle interior aesthetic updates. Service considerations for this model year include inspecting the serpentine belt and all associated pulleys for wear. Owners should also routinely check the transmission fluid and pay attention to the suspension bushings.

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  1998_Q45

  The 1998 Q45 carried over the second-generation model introduced for 1997, powered by a 4.1-liter V8 mated to a four-speed automatic transmission, with the Q45t trim offering a firmer suspension and additional equipment. Changes for 1998 were minimal, as the redesign was only a year old. Common service considerations include timing belt replacement on the interference V8, regular transmission fluid service, and inspection of aging suspension and electrical components. Higher-mileage examples may also exhibit oil consumption and alternator failures.

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  1994_Q45

  The 1994 Nissan Q45 continued with its 4.1-liter VH41DE V8 engine and four-speed automatic transmission, with only minor updates to equipment and trim over the prior model year. Timely timing belt replacement is important, since the interference engine can suffer valve damage if the belt fails. The automatic transmission is a known wear item, and higher-mileage examples commonly develop electrical faults, suspension component wear, and oil leaks. Parts availability and labor costs can make ongoing maintenance relatively expensive.

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  1997_Q45

  The 1997 Q45 introduced the second generation with a redesigned body and a new 4.1-liter VH41DE V8 producing 267 horsepower, paired with a four-speed automatic transmission. A Q45t trim added a sport-tuned suspension, 17-inch wheels, and a rear spoiler. The engine uses a timing belt that requires replacement at the manufacturer's interval, generally around 105,000 miles. Common service items on higher-mileage examples include ignition coil packs, suspension components, and aging electrical systems.