The G5 comes with a 150-hp 2.2-liter four-cylinder engine mated to either a five-speed manual or an optional four-speed automatic transmission. The Base trim's standard equipment includes: a rear spoiler, 15-inch steel wheels, air conditioning, satellite radio, Onstar, power mirrors, windows and door locks with remote keyless entry. The GT trim adds: a sport-tuned suspension, electronic traction and stability control, four-wheel anti-lock disc brakes, 17-inch forged alloy wheels, Pioneer speakers, cruise control and Bluetooth.For 2009, the G5 has removed the 2.4-liter engine that was standard on the GT trim.