more European-style interior. The design of the interior of the Aura differed from that of the Ion, which was highly criticized. On the upscale XR model, the interior came with an option for saddle leather and paddle shifters, as well as an option for back seat radio controls. Despite being praised for its design and fit and finish, the Aura's interior was criticized for using cheap materials. The Aura XR's standard features included automatic climate control, remote vehicle start, Stabilitrak stability control, backseat audio controls, heated seats, six airbags, ABS four-wheel disc brakes, steering wheel audio controls, universal home remote, OnStar and a "Driver Information Center". Models Aura XR The Aura XR was the top-line Aura model. The XR was fitted with the 3.6 L DOHC V6 with VVT, rated at at 6200 rpm and of torque at 3100 rpm. This engine was first used in the Cadillac CTS as well as the Cadillac STS and marks its third use in a North American GM car. With this 3.6 L engine, the Aura was the first front-wheel drive GM passenger car to use the new Hydra-Matic 6T70 six-speed automatic transmission. The transmission featured TAPshift, which allowed the driver to manually select gears by using paddles located behind the steering wheel. The Aura XR was the performance-oriented version with a taut, but not harsh, suspension and the more powerful engine. Available interior colors in the XR were tan and grey leather (available in the XE), along with the XR-specific black or Morocco Brown leather. Cloth was standard. Other standard features included the Advanced Audio Package, 18 inch alloy wheels, chrome exterior door handles, and remote vehicle start. Given the 2007 Saturn Aura's European roots—the car's chassis was also used for the Saab 9-3. The Aura also used hydraulic power steering (V-6 models only) that provided more feedback and a more linear feel than the fussy electric power-assist units. For 2009, an entry level XR became available. It included the 17 inch 10 spoke alloy wheels available on the XE and the 2.4 L LE5 Ecotec engine mated to GM's all new 6T40 6-speed automatic transmission with TAPshift. The 3.6L VVT with 18" wheels was optional. Aura XE The base version was the Aura XE. Equipped with the 3.5 L VVT V6 (LZ4), the engine was matched with the 4T45-E four-speed automatic transmission. In the Aura, the engine produced and of torque.