2011 Infiniti G25 sedan using the AV-6 engine with less power and equipment available is less than G37-engined large. 2011 Infiniti G25 with a starting price at $ 32.350, G25 still wrap leather upholstery, six-speaker stereo is XM electric chair ready, front, brushed-aluminum interior trim, keyless starting, automatic climate control, HID lamps, and 17 – inch wheels.