Production chronology1990–2006
Sourced production or model lifecycle range used by the main catalog timeline.
Wikipedia lead ↗17 years
← Infiniti
Infiniti / Model record
InfinitiQ45
Production1990–2006
Recorded originJapan
ClassMidsize Cars
Background
The Infiniti Q45 is a full-size luxury sedan that was marketed by the Infiniti division of Nissan from the 1990 to 2006 model years. The inaugural product line and flagship sedan of the brand, the Q45 competed directly against the Acura Legend and Lexus LS 400, as multiple Japanese automobile manufacturers began to establish dedicated luxury-vehicle brands in North America during the late 1980s.
Text adapted from “Infiniti Q45” on Wikipedia ↗ · CC BY-SA 4.0 ↗ · retrieved 2026-07
Chronology ledger
Dates with their meaning intact
US EPA model years1990–2006
Model years represented in FuelEconomy.gov; a US-market observation, not a worldwide production range.
EPA FuelEconomy.gov ↗Observed bounds
Canadian NRCan model years1995–2005
Model years in Natural Resources Canada retail fuel-consumption data; Canadian-market evidence, not a worldwide production range.
Natural Resources Canada ↗10 years