Standard Features (likely varied by trim):
* Engine: Typically a 3.4L V6 engine, though the higher-performance SS model boasted a 5.3L V8.
* Transmission: Generally a 4-speed automatic transmission.
* Body Style: Full-size sedan, offering ample passenger and cargo space.
* Safety Features: Anti-lock brakes (ABS) were likely standard across trims. Front airbags were standard, with side airbags potentially optional or standard on higher trims.
* Interior Features: Cloth upholstery (leather optional on higher trims), power windows and locks, air conditioning, AM/FM stereo with CD player.
Features Depending on Trim Level (LS, LT, SS):
* Performance: The SS model significantly outperformed the LS and LT with its larger V8 engine and sportier suspension.
* Wheels: Wheel size and style varied by trim, with the SS having larger, more aggressive wheels.
* Interior Upgrades: Higher trims like the LT offered features like leather seats, heated seats, upgraded sound systems, and possibly other convenience features.
* Exterior Upgrades: Higher trims often had features like alloy wheels, fog lamps, and different exterior badging.
Optional Features (available across various trims, but often at extra cost):
* OnStar: A subscription-based service providing navigation, emergency services, and more.
* Sunroof/Moonroof: A popular option for added light and ventilation.
* Premium Sound System: Higher-quality audio systems with more speakers and better sound quality.
* Different Upholstery: Upgrade from cloth to leather.
It's important to note that specific features varied based on the individual vehicle's options when it was purchased new. To know the exact features of a specific 2005 Chevy Impala, you'd need to consult its original window sticker, the vehicle's owner's manual, or the vehicle's VIN number (for a vehicle history report).
