The Chevrolet HHR 2.4i 16V Automatic, produced from 2005 to 2011, represents a mid-range offering within the first generation (2006-2011) of the HHR (Heritage High Roof) model line. Chevrolet positioned the HHR as a retro-styled crossover wagon, drawing heavily on design cues from the 1949 Chevrolet Advance-Design trucks. The 2.4-liter engine paired with a four-speed automatic transmission was a popular configuration, aiming for a balance between affordability, practicality, and reasonable performance. It served as a step up from the base 2.2L engine, offering more power for highway driving and towing, while remaining more accessible than the optional turbocharged 2.0L engine.
Technical Specifications
| Brand | Chevrolet |
| Model | HHR |
| Generation | HHR (First Generation) |
| Type (Engine) | 2.4 i 16V (175 Hp) Automatic |
| Start of production | 2005 |
| End of production | May, 2011 |
| Powertrain Architecture | Internal Combustion Engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 11.8 l/100 km (19.9 US mpg) |
| Fuel consumption (extra urban) | 9.4 l/100 km (25 US mpg) |
| Fuel consumption (combined) | 10.7 l/100 km (22 US mpg) |
| Fuel Type | Petrol (Gasoline) |
| Weight-to-power ratio | 8.3 kg/Hp |
| Weight-to-torque ratio | 6.4 kg/Nm |
| Power | 175 Hp @ 6200 rpm |
| Power per litre | 73.4 Hp/l |
| Torque | 228 Nm @ 5000 rpm (168.16 lb.-ft. @ 5000 rpm) |
| Engine layout | Front, Transverse |
| Engine Model/Code | LE5 |
| Engine displacement | 2384 cm3 (145.48 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 88 mm (3.46 in.) |
| Piston Stroke | 98 mm (3.86 in.) |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated |
| Valvetrain | DOHC |
| Engine oil capacity | 4.7 l (4.97 US qt | 4.14 UK qt) |
| Coolant capacity | 8 l (8.45 US qt | 7.04 UK qt) |
| Kerb Weight | 1455 kg (3207.73 lbs.) |
| Trunk (boot) space – minimum | 638 l (22.53 cu. ft.) |
| Trunk (boot) space – maximum | 1785 l (63.04 cu. ft.) |
| Fuel tank capacity | 49 l (12.94 US gal | 10.78 UK gal) |
| Length | 4475 mm (176.18 in.) |
| Width | 1755 mm (69.09 in.) |
| Height | 1603 mm (63.11 in.) |
| Wheelbase | 2628 mm (103.46 in.) |
| Front track | 1491 mm (58.7 in.) |
| Rear track | 1491 mm (58.7 in.) |
| Minimum turning circle | 11 m (36.09 ft.) |
| Drivetrain | Front wheel drive |
| Number of gears | 4 |
| Gearbox type | Automatic transmission |
| Front suspension | Spring Strut |
| Rear suspension | Transverse stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Drum |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Tires size | 215/55 R16 |
| Wheel rims size | 6.5J X 16 |
Powertrain & Engine Architecture
The Chevrolet HHR 2.4i Automatic utilizes the LE5 2.4-liter inline-four cylinder engine. This engine, part of the GM Ecotec family, is a naturally aspirated powerplant featuring a cast iron block and aluminum cylinder head. It employs multi-port fuel injection and a double overhead camshaft (DOHC) valvetrain with four valves per cylinder. The LE5 engine produces 175 horsepower at 6200 rpm and 228 Nm (168 lb-ft) of torque at 5000 rpm. The four-speed automatic transmission (4T45-E) was a common choice for GM vehicles of this era. It’s a relatively simple and robust design, prioritizing affordability and ease of maintenance over advanced features like manual shift modes. The transmission’s gear ratios are tuned for everyday driving, prioritizing fuel economy and smooth operation rather than aggressive acceleration.
Driving Characteristics
The HHR 2.4i Automatic delivers adequate, but not exhilarating, performance. Acceleration from 0 to 60 mph typically takes around 9-10 seconds. The four-speed automatic transmission, while smooth, can feel somewhat dated compared to more modern transmissions with more gears. The gear ratios are spaced to provide reasonable acceleration in city driving, but can feel strained when attempting to pass at highway speeds. Compared to the 2.2L base engine, the 2.4L offers a noticeable improvement in power and responsiveness. However, it falls short of the performance offered by the optional 2.0L turbocharged engine, which provides significantly more horsepower and torque. The front-wheel-drive configuration provides predictable handling, but doesn’t offer the dynamic capabilities of all-wheel-drive systems.
Equipment & Trim Levels
The 2.4i Automatic trim typically included standard features such as air conditioning, power windows and locks, a CD player with an auxiliary input jack, and anti-lock brakes (ABS). Higher trim levels, such as the LT, added features like cruise control, upgraded interior trim, and alloy wheels. Optional extras included a sunroof, premium sound system, and leather upholstery. The interior design of the HHR 2.4i Automatic is functional and straightforward, with a focus on practicality. The high roofline provides ample headroom for both front and rear passengers. The rear seats can be folded down to create a large cargo area, making the HHR a versatile vehicle for hauling goods.
Chassis & Braking
The HHR utilizes a front-wheel-drive platform with a MacPherson strut front suspension and a twist-beam rear suspension. The front suspension incorporates a stabilizer bar to reduce body roll during cornering. The rear suspension is relatively simple, prioritizing cost-effectiveness and space efficiency. The braking system consists of ventilated discs on the front wheels and drum brakes on the rear wheels. ABS is standard, providing enhanced braking control in emergency situations. The HHR’s suspension is tuned for comfort, providing a relatively smooth ride over most road surfaces. However, it’s not particularly sporty, and body roll is noticeable during aggressive cornering.
Market Reception & Comparison
The Chevrolet HHR 2.4i Automatic received mixed reviews from automotive critics. While the retro styling was generally praised, the HHR was often criticized for its lackluster performance and dated interior. Fuel economy was considered average for its class, with combined fuel consumption around 22 US mpg. Compared to other compact wagons and crossovers of the time, such as the Honda Fit or Toyota Matrix, the HHR offered a unique styling proposition but lacked the refinement and fuel efficiency of its competitors. The 2.4L engine offered a good balance between power and fuel economy, making it a popular choice for buyers who wanted a step up from the base engine without the added cost of the turbocharged 2.0L.
Legacy
The Chevrolet HHR, while not a sales success, has developed a small but dedicated following among enthusiasts who appreciate its unique styling and practicality. The LE5 2.4-liter engine and 4T45-E transmission are generally considered reliable, with proper maintenance. Common issues include oil leaks and occasional transmission slippage. In the used car market, the HHR 2.4i Automatic is typically available at affordable prices, making it an attractive option for budget-conscious buyers. Its spacious interior and versatile cargo area continue to appeal to those who need a practical and distinctive vehicle.
