Infiniti is the steepest depreciation in the Japanese luxury segment. A 3-year-old Q50 typically trades at 50-60% of its original MSRP. The QX60 follows a similar curve, often losing 40-50% in the same period. That makes Infiniti one of the strongest values on 336 used lots - you get Nissan mechanicals (proven VQ-series V6 engines) wrapped in a genuine luxury interior with leather, Bose audio, and a full tech suite.
The Q50 Red Sport 400 is worth knowing about - it makes 400 horsepower from a twin-turbo V6 and typically costs less used than a base BMW 330i of the same age. The QX80 is a full-size body-on-frame SUV that seats 8 and tows 8,500 lbs - it competes with the Escalade and Suburban at a lower used price. Maintenance costs are closer to Nissan than BMW, and most independent shops can service them without European-specialist rates.