The 2007 Chevrolet Impala SS represents the pinnacle of the seventh-generation Malibu platform, offering a blend of American comfort and performance engineering that remains relevant to enthusiasts today. This model year marked the final run for the high-performance LT1 V8 in this particular generation, making the SS variant a significant piece of GM performance history. Understanding the 07 Impala SS specs provides insight into why this sedan continues to attract attention in the full-size segment.
Performance Engineering and Drivetrain
At the heart of the 2007 Impala SS lies the robust 5.3-liter Vortec 5300 LT1 engine, a thoroughly refined powerplant that delivers responsive acceleration and refined power delivery. This pushrod V8 generates 302 horsepower at 5,200 rpm and 330 lb-ft of torque at 4,400 rpm, providing ample thrust for daily driving and highway merging. The powertrain is mated to a robust 4L60-E four-speed automatic transmission, known for its durability and smooth shifting characteristics under various driving conditions.
Drivetrain Configuration and Traction
Standard front-wheel drive offers efficiency benefits for the large sedan, while the available GM Performance Division 4L60-E transmission incorporates specific calibrations for the SS model. This transmission tuning prioritizes responsiveness, holding gears longer during aggressive acceleration to maximize the LT1's power curve. The rear differential is typically an open unit, though limited-slip options were available, enhancing traction during hard exits from corners and in less-than-ideal weather conditions.
Handling, Suspension, and Brakes
Engineers approached the suspension of the 07 Impala SS with a focus on controlled comfort rather than aggressive sport tuning. The MacPherson strut front suspension and multi-link rear setup utilize larger-diameter stabilizer bars compared to the base Impala, reducing body roll during cornering without sacrificing ride quality. This calibration ensures the sedan remains planted through curves while effectively absorbing road irregularities.
Braking System and Dimensions
Stopping power is delivered through a robust system featuring larger-diameter vented disc brakes up front, with solid rotors providing consistent performance during demanding driving scenarios. The brake pedal is tuned for firm feel, instilling confidence during emergency maneuvers. The overall chassis maintains the Impala's characteristic long wheelbase and wide stance, contributing to high-speed stability that is often cited positively in 07 Impala SS reviews.
Fuel Economy and Efficiency Figures
Fuel efficiency for the 2007 Impala SS reflects its size and performance orientation, with the U.S. Environmental Protection Agency (EPA) assigning an estimated 15 miles per gallon in city driving and 24 miles per gallon on the highway. These figures are competitive within its class for a performance-oriented sedan of this era, though real-world results often vary based on driving habits and traffic conditions. The large displacement V8 necessitates premium unleaded gasoline to achieve optimal performance and prevent engine knock.
Dimensions and Capacity
The sedan measures over 19 feet in length and nearly 74 inches in width, providing substantial interior volume for passengers and cargo. The trunk offers generous capacity, easily accommodating multiple bags or golf clubs without compromising cabin space. Seating for five is standard, with supportive front buckets and a comfortable rear bench that emphasizes comfort over sport seating.
Exterior and Interior Design Language
The exterior of the 2007 Impala SS is distinguished by unique front and rear fascias, chrome dual exhaust tips, and the signature Impala SS badging that signals its performance status. The grille is more aggressive, and the side skirts provide a subtle hint at the vehicle's lowered and more purposeful stance. Inside, the SS-specific instrumentation cluster with tachometer, sport-tuned cloth upholstery, and aluminum accents create an atmosphere focused on driver engagement without resorting to overly flamboyant styling.
