The Saturn Aura’s gas mileage ratings are at the top of the chart of the most fuel-efficient American-made family sedans. The Greenline Hybrid sets the high mark for the Aura range, with 32 miles per gallon (MPG) on the highway, while the base Aura XE follows closely with 30 MPG highway. Alas, when it’s all said and done, Aura gas mileage falls significantly behind the segment leading Toyota Prius.The 2008 Saturn Aura is available in four levels of trim, each with a specific power plant.
Aura XE - 2.4 liter DOHC four cylinder engine, producing 169 horsepower (HP) and 160 foot pounds of torque, mated to a four-speed automatic transmission. Gas mileage ratings: 22 city / 30 highway MPG.
Aura XE V6 - 3.5 liter V6 engine, producing 219 HP and 219 foot pounds of torque, mated to a four-speed automatic. Gas mileage ratings: 18 city / 29 highway MPG.
Aura XR (shown above)- 3.6 liter V6 engine, producing 252 HP and 251 foot pounds of torque, mated to a six-speed TAPshift automatic. Gas mileage ratings: 17 city / 26 highway MPG.
Aura Green Line - 2.4 liter four cylinder engine with hybrid propulsion, producin 164 HP and 159 foot pounds of torque, mated to a four-speed automatic. Gas mileage ratings: 24 city / 32 highway MPG.
