The Chevrolet Impala IX, produced from 2012 to 2013, represented a significant step forward for the iconic American sedan. Falling within the ninth generation of the Impala (2006-2016), the 3.6 SIDI V6 FlexFuel variant with an automatic transmission occupied a mid-to-upper position in the lineup, offering a balance of performance, fuel efficiency, and modern features. This model aimed to recapture the Impala’s traditional market share by appealing to families and drivers seeking a comfortable and capable full-size sedan. It was a key offering in Chevrolet’s attempt to compete with established rivals like the Ford Taurus and Toyota Avalon.
Technical Specifications
| Brand | Chevrolet |
| Model | Impala |
| Generation | Impala IX |
| Type (Engine) | 3.6 SIDI V6 (300 Hp) FlexFuel Automatic |
| Start of production | 2012 |
| End of production | 2013 |
| 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 | 7.8 l/100 km (30.2 US mpg, 36.2 UK mpg, 12.8 km/l) |
| Fuel consumption (economy) – extra urban (Ethanol – E85) | 10.6 l/100 km |
| Fuel Type | Petrol / Ethanol – E85 |
| Weight-to-power ratio | 5.4 kg/Hp, 186 Hp/tonne |
| Weight-to-torque ratio | 4.5 kg/Nm, 220.1 Nm/tonne |
| Power | 300 Hp @ 6800 rpm |
| Power per litre | 84.4 Hp/l |
| Torque | 355 Nm @ 5300 rpm (261.83 lb.-ft. @ 5300 rpm) |
| Maximum engine speed | 7200 rpm |
| Engine layout | Front, Transverse |
| Engine Model/Code | LFX |
| Engine displacement | 3556 cm3 (217 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 94 mm (3.7 in.) |
| Piston Stroke | 85.6 mm (3.37 in.) |
| Compression ratio | 11.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Naturally aspirated engine |
| Valvetrain | DOHC |
| Engine oil capacity | 5.7 l (6.02 US qt, 5.02 UK qt) |
| Coolant | 8.7 l (9.19 US qt, 7.65 UK qt) |
| Kerb Weight | 1613-1655 kg (3556.06 – 3648.65 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 | 5090 mm (200.39 in.) |
| Width | 1851 mm (72.87 in.) |
| Height | 1491 mm (58.7 in.) |
| Wheelbase | 2807 mm (110.51 in.) |
| Front track | 1585 mm (62.4 in.) |
| Rear (Back) track | 1562 mm (61.5 in.) |
| 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 | 6 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; 235/50 R18 |
| Wheel rims size | 16; 17; 18 |
Powertrain & Engine Architecture
The heart of the Impala IX 3.6 SIDI was the LFX 3.6-liter V6 engine. “SIDI” stands for Spark Ignition Direct Injection, a technology that significantly improved fuel efficiency and power output compared to traditional port fuel injection systems. The LFX engine featured a 60-degree V-angle, aluminum cylinder heads and block, and a dual overhead camshaft (DOHC) valvetrain with four valves per cylinder. This configuration allowed for optimized airflow and combustion. The engine produced 300 horsepower at 6800 rpm and 262 lb-ft of torque at 5300 rpm. The FlexFuel capability allowed the engine to run on gasoline or a blend of up to 85% ethanol (E85), providing drivers with fuel choice and potentially reducing emissions. The engine was paired with a six-speed automatic transmission, designed to provide smooth shifting and efficient power delivery. This transmission was a crucial component in balancing performance with fuel economy.
Driving Characteristics
The 3.6L V6 and six-speed automatic combination in the Impala IX delivered a comfortable and refined driving experience. While not a sports sedan, the powertrain provided ample power for everyday driving and highway passing maneuvers. The automatic transmission was tuned for smooth shifts, prioritizing comfort over aggressive gear changes. Compared to the base 2.5L four-cylinder engine, the V6 offered a noticeable increase in acceleration and overall responsiveness. However, it didn’t quite match the performance of the later Impala models equipped with the more powerful 3.6L V6 found in the SS trim. The gear ratios were optimized for cruising, making it a pleasant vehicle for long road trips. The front-wheel-drive configuration provided adequate traction in most conditions, but could exhibit some torque steer under hard acceleration.
Equipment & Trim Levels
The Impala IX 3.6 SIDI V6 typically came standard with a generous array of features. These included air conditioning, power windows and locks, a tilt and telescoping steering wheel, cruise control, and a basic audio system. Higher trim levels, such as the LT and LTZ, added features like leather upholstery, heated front seats, a premium audio system (often Bose), a touchscreen infotainment system, and a rearview camera. Optional extras included a sunroof, navigation system, and advanced safety features like blind-spot monitoring and rear cross-traffic alert. Interior upholstery was typically cloth on the base models, with leather available on higher trims. The dashboard layout was generally straightforward and user-friendly, with a focus on ergonomics.
Chassis & Braking
The Impala IX utilized an independent suspension system at all four wheels. The front suspension employed a McPherson strut design with coil springs and an anti-roll bar, while the rear suspension featured a multi-link setup, also with coil springs and a stabilizer bar. This suspension configuration aimed to provide a comfortable ride while maintaining reasonable handling characteristics. Braking duties were handled by ventilated discs at the front and solid discs at the rear. The Impala IX came standard with an Anti-lock Braking System (ABS) to enhance braking performance and stability. Steering was rack-and-pinion, providing precise and responsive steering feel.
Market Reception & Comparison
The 2012-2013 Chevrolet Impala 3.6 SIDI V6 received generally positive reviews. Critics praised its comfortable ride, spacious interior, and strong V6 engine. However, some noted that the interior design felt somewhat dated compared to newer competitors. Fuel economy was considered average for its class, with the E85 capability offering a potential benefit for those with access to ethanol fuel. Compared to the base 2.5L Impala, the 3.6L V6 offered a significant performance upgrade, but at a higher price point. The Impala also faced competition from the Ford Taurus and Toyota Avalon, both of which offered similar levels of comfort and features. The Impala’s advantage lay in its more affordable price and American-made heritage.
Legacy
The LFX 3.6L V6 engine proved to be a reliable and durable powertrain. While not without its minor issues (such as potential oil consumption in some cases), the engine generally held up well over time. The six-speed automatic transmission also proved to be relatively trouble-free. Today, the Impala IX 3.6 SIDI V6 can be found on the used car market at relatively affordable prices. It remains a viable option for buyers seeking a spacious, comfortable, and reasonably powerful full-size sedan. Its FlexFuel capability adds a unique feature that can appeal to environmentally conscious drivers. While it may not have the prestige of some of its competitors, the Impala IX 3.6 SIDI V6 represents a solid and dependable American car.
