The Chevrolet Impala VIII (W), produced from 1999 to 2006, represented a significant return to form for the iconic Impala nameplate. Falling within the eighth generation of the Impala, this model was built on the GM W-body platform, shared with other mid-size GM vehicles like the Buick Regal and Pontiac Grand Prix. The 3.8 i V6 variant, generating 203 horsepower, occupied a middle ground in the Impala lineup, offering a balance of performance and affordability. It aimed to appeal to families and commuters seeking a spacious and comfortable sedan with respectable power.
Technical Specifications
| Brand | Chevrolet |
| Model | Impala |
| Generation | Impala VIII (W) |
| Type (Engine) | 3.8 i V6 (203 Hp) |
| Start of production | 1999 |
| End of production | 2006 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 11.8 l/100 km (19.9 US mpg) |
| Fuel consumption (extra urban) | 7.8 l/100 km (30.2 US mpg) |
| Fuel consumption (combined) | 9.1 l/100 km (25.8 US mpg) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 8.5 sec |
| Acceleration 0 – 62 mph | 8.5 sec |
| Acceleration 0 – 60 mph | 8.1 sec |
| Maximum speed | 200 km/h (124.27 mph) |
| Weight-to-power ratio | 7.7 kg/Hp |
| Weight-to-torque ratio | 5.1 kg/Nm |
| Power | 203 Hp @ 5200 rpm |
| Torque | 305 Nm @ 4000 rpm (224.96 lb.-ft. @ 4000 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | L36 |
| Engine displacement | 3791 cm3 (231.34 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 96.52 mm (3.8 in.) |
| Piston Stroke | 86.36 mm (3.4 in.) |
| Compression ratio | 9.4:1 |
| Number of valves per cylinder | 2 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Engine oil capacity | 4.2 l (4.44 US qt | 3.7 UK qt) |
| Coolant capacity | 11 l (11.62 US qt | 9.68 UK qt) |
| Kerb Weight | 1560 kg (3439.21 lbs.) |
| Trunk (boot) space – minimum | 525 l (18.54 cu. ft.) |
| Fuel tank capacity | 65 l (17.17 US gal | 14.3 UK gal) |
| Length | 5080 mm (200 in.) |
| Width | 1855 mm (73.03 in.) |
| Height | 1455 mm (57.28 in.) |
| Wheelbase | 2805 mm (110.43 in.) |
| Front track | 1575 mm (62.01 in.) |
| Rear track | 1555 mm (61.22 in.) |
| Drivetrain Architecture | Front wheel drive |
| Number of gears | 4 |
| Gearbox type | Automatic transmission |
| Front suspension | Spring Strut |
| Rear suspension | Coil spring |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Hydraulic Steering |
| Tires size | 225/60 R16 |
| Wheel rims size | 6.5J x 16 |
Powertrain & Engine Architecture
The heart of the Impala VIII 3.8 i V6 was the L36 engine, a 3.8-liter (231 cubic inches) naturally aspirated V6. This engine was a staple of GM’s mid-size offerings for many years, known for its durability and relatively simple design. It utilized a 90-degree V-angle, contributing to a smoother running character. The L36 featured a cast iron block with aluminum cylinder heads, and employed multi-port fuel injection for precise fuel delivery. The valvetrain consisted of two valves per cylinder, operated by a single overhead camshaft. Paired with this engine was a 4-speed automatic transmission (typically the 4T65E), chosen for its smooth operation and ease of use. This transmission was electronically controlled, adapting shift points based on driving conditions.
Driving Characteristics
The 203 horsepower and 225 lb-ft of torque produced by the 3.8L V6 and 4-speed automatic combination provided adequate, though not exhilarating, performance. Acceleration from 0-60 mph typically took around 8.1 to 8.5 seconds. The automatic transmission was tuned for comfort and fuel efficiency, resulting in relatively relaxed gear changes. Compared to the available 3.4L V6, the 3.8L offered a noticeable improvement in acceleration and passing power. However, it lacked the sporty feel of the Impala SS with its larger V8 engine. The automatic transmission, while convenient, did result in some power loss compared to the available manual transmission options in other Impala trims.
Equipment & Trim Levels
The 3.8L V6 Impala typically came standard with features like air conditioning, power windows and locks, a CD player, and cloth upholstery. Higher trim levels, such as the LS, added features like alloy wheels, upgraded audio systems, and keyless entry. Optional extras included a sunroof, leather upholstery, and traction control. Interior design was generally conservative, focusing on comfort and practicality. The dashboard layout was straightforward, with easy-to-use controls. The Impala offered a spacious interior, particularly in the rear seats, making it a comfortable choice for families.
Chassis & Braking
The Impala VIII utilized a front-wheel-drive layout with an independent front suspension featuring coil springs and a multi-link rear suspension. This setup provided a comfortable ride, absorbing bumps and imperfections in the road effectively. The front brakes were ventilated discs, while the rear brakes were typically solid discs, providing adequate stopping power for the vehicle’s weight. ABS (Anti-lock Braking System) was standard, enhancing safety during emergency braking situations. Steering was rack-and-pinion with hydraulic power assist, offering a responsive and easy driving experience.
Market Reception & Comparison
The Impala VIII 3.8L V6 Automatic was generally well-received by critics as a practical and comfortable family sedan. It offered a good balance of features, performance, and fuel economy. Fuel economy averaged around 25.8 mpg combined, which was competitive for its class. Compared to the base 3.4L V6 Impala, the 3.8L offered a significant performance upgrade, making it a more appealing choice for drivers who desired more power. However, it wasn’t as fuel-efficient as the 3.4L. Reliability was generally good, with the L36 engine proving to be durable and long-lasting. Some owners reported minor issues with the 4T65E automatic transmission, such as harsh shifting or premature failure, but these were not widespread.
Legacy
The Chevrolet Impala VIII 3.8L V6 Automatic remains a relatively affordable and readily available used car today. The L36 engine is known for its longevity and relatively simple maintenance requirements. Parts are generally inexpensive and easy to find. While not a performance icon, this Impala variant provides a comfortable and reliable transportation option for those seeking a spacious and practical sedan. Its enduring popularity in the used car market is a testament to its overall quality and value.
