One Owner, Local Trade, Remote Start, Satellite Radio, Onstar, CD/MP3 Radio, Power Seats, Flex Fuel, Trip Computer with Temp Compass, Keyless Entry! For 2008, Chevrolet offers an electronic stability system for the first time on the Impala. General Motors' StabiliTrak system is standard. A standard six-speaker CD stereo includes an auxiliary jack for iPods or other MP3 players. The Impala's 3.5-liter V-6 produces 211 horsepower and 214 pounds-feet of torque. It can now be configured to run on regular gasoline or ethanol-based E85. Side curtain airbags and seat belt pretensioners for the front seats are standard. All-disc antilock brakes are standard on the LT, LTZ and SS. Traction control is available. Latch child-safety seat attachments go on all second-row seating positions. A tire pressure monitoring system is standard on all models.