The Chevrolet Impala IX 3.5 V6 (211 Hp) FlexFuel Automatic, produced between 2009 and 2011, represented a significant iteration of Chevrolet’s long-running Impala nameplate. This variant occupied a mid-range position within the ninth generation (2006-2016) Impala lineup, offering a balance between performance, fuel efficiency, and affordability. It was designed to appeal to families and commuters seeking a spacious and comfortable full-size sedan with the added flexibility of FlexFuel capability. The Impala IX aimed to revitalize Chevrolet’s presence in the large sedan segment, competing with models like the Ford Taurus and Toyota Avalon.
Technical Specifications
| Brand | Chevrolet |
| Model | Impala |
| Generation | Impala IX |
| Type (Engine) | 3.5 V6 (211 Hp) FlexFuel Automatic |
| Start of production | 2009 |
| End of production | 2011 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5-6 |
| Doors | 4 |
| Fuel consumption (economy) – urban | 13.0 l/100 km (18.1 US mpg, 21.7 UK mpg, 7.7 km/l) |
| Fuel consumption (economy) – urban (Ethanol – E85) | 16.8 l/100 km |
| Fuel consumption (economy) – extra urban | 8.1 l/100 km (29 US mpg, 34.9 UK mpg, 12.3 km/l) |
| Fuel consumption (economy) – extra urban (Ethanol – E85) | 10.6 l/100 km |
| Fuel Type | Petrol / Ethanol – E85 |
| Weight-to-power ratio | 7.6 kg/Hp, 130.8 Hp/tonne |
| Weight-to-torque ratio | 5.6 kg/Nm, 179.8 Nm/tonne |
| Power | 211 Hp @ 5800 rpm |
| Power per litre | 60.2 Hp/l |
| Torque | 290 Nm @ 4000 rpm (213.89 lb.-ft. @ 4000 rpm) |
| Maximum engine speed | 6400 rpm |
| Engine layout | Front, Transverse |
| Engine Model/Code | LZE |
| Engine displacement | 3507 cm3 (214.01 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 99 mm (3.9 in.) |
| Piston Stroke | 76 mm (2.99 in.) |
| Compression ratio | 9.8:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 3.8 l (4.02 US qt | 3.34 UK qt) |
| Coolant | 9.6 l (10.14 US qt | 8.45 UK qt) |
| Kerb Weight | 1613 kg (3556.06 lbs.) |
| Trunk (boot) space – minimum | 526 l (18.58 cu. ft.) |
| Fuel tank capacity | 66 l (17.44 US gal | 14.52 UK gal) |
| Length | 5091 mm (200.43 in.) |
| Width | 1851 mm (72.87 in.) |
| Height | 1487 mm (58.54 in.) |
| Wheelbase | 2807 mm (110.51 in.) |
| Front track | 1585 mm (62.4 in.) |
| Rear (Back) track | 1562 mm (61.5 in.) |
| Drag coefficient (Cd) | 0.33 |
| Minimum turning circle (turning diameter) | 11.6-12.2 m (38.06 – 40.03 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the front wheels of the vehicle. |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 4 gears, automatic transmission |
| Front suspension | Independent, type McPherson with coil spring and anti-roll bar |
| Rear suspension | Independent multi-link spring suspension with stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Tires size | 225/60 R16; 225/55 R17 |
| Wheel rims size | 16; 17 |
Powertrain & Engine Architecture
The heart of the Impala IX 3.5 V6 was the LZE engine, a 3.5-liter naturally aspirated V6. This engine featured a 60-degree V-angle and utilized a dual overhead camshaft (DOHC) valvetrain with two valves per cylinder. The LZE employed multi-port fuel injection, delivering fuel directly into the intake ports. The engine was designed to provide a balance of power and efficiency, and its FlexFuel capability allowed it to run on gasoline or a blend of up to 85% ethanol (E85). The 4-speed automatic transmission, a common choice for American sedans of this era, was selected for its smooth operation and ease of use. While not the most technologically advanced transmission, it was known for its reliability. The transmission’s gear ratios were tuned for comfortable cruising and adequate acceleration, prioritizing drivability over outright performance.
Driving Characteristics
The 211 horsepower and 290 lb-ft of torque delivered by the 3.5L V6 and 4-speed automatic combination provided adequate, but not exhilarating, performance. Acceleration from 0 to 60 mph was typically in the 8-9 second range. The automatic transmission, while smooth, lacked the responsiveness of more modern transmissions or manual options. Compared to the higher-output 3.9L V6 available in some Impala trims, the 3.5L felt noticeably less powerful, particularly during highway passing maneuvers. However, the 3.5L offered better fuel economy than the larger engine. The suspension was tuned for comfort, providing a relatively soft ride that absorbed bumps well. Handling was adequate for a large sedan, but not particularly sporty.
Equipment & Trim Levels
The Impala IX 3.5 V6 Automatic typically came standard with features such as air conditioning, power windows and locks, a CD player with an auxiliary input, and cruise control. Higher trim levels, such as the LT and LTZ, added features like leather upholstery, heated front seats, a premium sound system, and alloy wheels. Optional extras included a sunroof, navigation system, and remote start. Interior upholstery was typically cloth in the base models, with leather available on higher trims. The dashboard layout was functional and straightforward, with easy-to-read gauges and controls.
Chassis & Braking
The Impala IX utilized an independent McPherson strut suspension in the front and an independent multi-link suspension in the rear. This setup provided a comfortable ride and reasonable handling. Front brakes were ventilated discs, while rear brakes were solid discs. Anti-lock braking system (ABS) was standard. The Impala IX’s chassis was designed for stability and comfort, prioritizing ride quality over sporty handling. Stabilizer bars were included both front and rear to reduce body roll during cornering.
Market Reception & Comparison
The Impala IX 3.5 V6 Automatic received mixed reviews from automotive critics. While praised for its spacious interior, comfortable ride, and FlexFuel capability, it was often criticized for its unremarkable performance and somewhat dated design. Compared to the 3.9L V6 Impala, the 3.5L offered better fuel economy but lacked the same level of acceleration. The 3.5L also offered a more affordable price point, making it an attractive option for budget-conscious buyers. Fuel economy figures were competitive for the segment, averaging around 18 mpg in the city and 29 mpg on the highway.
Legacy
The Chevrolet Impala IX 3.5 V6 Automatic, while not a standout performer, proved to be a reliable and practical family sedan. The LZE engine, when properly maintained, is known for its durability. Today, these Impalas can be found on the used car market at relatively affordable prices. Common maintenance issues include sensor failures and occasional transmission problems. However, parts availability is generally good, and the Impala IX remains a viable option for those seeking a large, comfortable, and affordable sedan. Its FlexFuel capability also adds a degree of future-proofing, allowing it to utilize alternative fuels as they become more readily available.
