Major changes to the Aura line include the discontinuation of the Green Line name, 3.5-liter V6 XE model and four-speed automatic transmission. The upscale XR trim can now be ordered with a 2.4-liter four-cylinder, while Saturn's six-speed automatic transmission with tap shift becomes standard on all models except the
Hybrid. StabiliTrak stability control is also made standard, as are redundant audio controls (XE, XR). On the Aura Hybrid, 17-inch alloy wheels with low rolling resistance tires replace 16-inch alloys.