[Source: GM press release]

The HHR features an open interior that provides the spaciousness and cargo capacity of an SUV. It has easy-to-maneuver dimensions and room for just about any lifestyle interest. The rear seats fold flat, providing 57.7 cubic feet (1,634 L) of convenient storage. With the rear seats up, the straight roofline and rear liftgate maximize cargo capacity, offering 25.2 cubic feet (638 L). Reconfigurable and convenient storage compartments accommodate everything from groceries to surfboards.

This popular small utility and its range of configurations greets the 2008 model year with critical acclaim and federal recognition for its safety features. Since its launch, HHR has received five-star crash ratings – the highest rating awarded by the National Highway Traffic Safety Administration’s (NHTSA) New Car Assessment Program. The five-star ratings were awarded for the driver and right-front passenger in a frontal crash, as well as five-star side-impact crash ratings for front seat and rear seat passengers. The HHR also was the highest-rated SUV for the 2006 model year in NHTSA rollover testing.

New features and revisions for ’08 add to HHR’s safety story, including StabiliTrak electronic stability control system, tire pressure monitoring system and OnStar now standard on all models. Other changes enhance HHR’s value and style, including new 16-inch wheels. Also, a new, solid rear quarter panel option enables the customized look of the unique HHR Panel, but with a full, five-passenger interior environment.

There are four new exterior colors available in 2008: Cardinal Red Metallic, Techno Gray Metallic, Victory Red and Blue Flash Metallic.

Unmistakable HHR style

HHR is a four-door vehicle with a rear touchpad liftgate. Its high roof evokes the look of the innovative 1949 Chevy Suburban, while other exterior cues carry unmistakably Chevy elements, such as the bold bowtie grille badge and round taillamps, which are reminiscent of earlier Corvettes.

The HHR features deep-draw, flared fenders that tuck in at the rockers for a solid, firmly planted stance. A one-piece stamped metal hood is reminiscent of the ’49 Suburban’s heritage and is proof of precise assembly quality. More quality touches are found in the single-cavity headlamp design, which incorporates jeweled lighting effects, and in the flared, twin round-taillamp design. Stamped door and window appearances with a one-piece wraparound molding contribute to the clean, detailed design. The HHR’s rear window is flush with the body side.

Complementing the HHR’s comfortable and expressive interior is a highly adaptable cargo system, which maximizes storage capability with a host of clever and useful configuration options, including:

• Auxiliary glove box with flip-up cover is located at the top center of the instrument panel for convenient storage of MP3s, cell phones, sunglasses and other smaller items.
  
• The front passenger seat folds fully flat, extending the total load length from the liftgate to the instrument panel – allowing 8-foot items, such as a ladder – to be carried with the liftgate closed.
  
• The front center armrest is integrated into the seat back frame, so it is out of the way when pivoted into a stowed position; a characteristic of trucks and SUVs.
  
• The rear seats feature a 60/40-split design and fold to form a continuous flat load surface in conjunction with the folded front passenger seat. The 60-percent folding side was thoughtfully positioned on the passenger side, enabling wider objects to be positioned diagonally and carried more securely in the vehicle.
  

The cargo area in the rear also is thoughtfully designed:

• It provides a continuous flat load floor when the rear seats are folded down.
  
• The primary load floor can become a shelf when raised and mounted. approximately 1 foot higher – the shelf can be mounted level or at a 45-degree angle to provide quick access to the cargo beneath it when the liftgate is opened.
  
• A 5-inch-deep recessed bin below the load floor can conceal 2.8 cubic feet (79.6 L); the spare tire is located beneath the bin.
  
• Two storage bins (0.5 cubic foot / 12.9 L total) are found forward of the load floor, nestled behind the rear seat, and plastic bag holders are conveniently located under the cargo shelf.
  
• It comes with a carpeted cargo mat.
  
• The rear liftgate is activated via touchpad for ease of opening.
  

Well-equipped LS and LT models

HHR comes well equipped from the factory in two models: LS and LT. The LT also comes in two packages – 1LT and 2LT. All HHR models include standard features such as air conditioning, power windows, power door locks, power outside mirrors, cruise control and remote keyless entry.

All HHR sound systems, including the standard six-speaker AM/FM/CD stereo, feature an auxiliary channel and front-mounted auxiliary input jack, so that an iPod or other audio source can be played through the vehicle audio system. A powerful, seven-speaker, Pioneer 260-watt amplified premium audio system with subwoofer is standard on the 2LT model and available with other trims.

Additional product highlights include:

• Driver information center with oil life monitor
  
• Adjustable cargo configurations
  
• Available power sunroof with express open and close feature
  
• OnStar available
  
• XM Satellite Radio available
  
• 16.2-gallon fuel tank provides more than 450 miles of cruising range
  
• New-for-2008 16-inch fascia-spoke wheels on 1LT
  
• Factory-installed remote start is standard with automatic transmission
  

The 1LT model also includes a standard MP3 player, eight-way power seat including power lumbar, and new 16-inch fascia-spoke wheels painted Sterling Silver. Bright chrome exterior trim and a bright exhaust tip are available. ABS is available and traction control is included when the vehicle is equipped with ABS and automatic transmission. New, 16-inch chrome wheels are available.

HHR 2LT comes with the larger 2.4L Ecotec engine and FE3 sport suspension with StabiliTrak. Additional standard features include ABS, fog lamps, bright exhaust tip, leather-wrapped steering wheel and shifter, the 260-watt Pioneer sound system with subwoofer and bright chrome exterior trim. Heated leather seats (with two heating levels) are available on both LT packages. Seventeen-inch high-polished forged aluminum wheels are available.

Other details shared among HHR models include a sporty three-spoke steering wheel and chrome accents on the instrument panel.

Ecotec-based powertrains

The HHR lineup relies on the renowned Ecotec family of technologically sophisticated inline four-cylinder engines, which balances usable power with fuel and emissions efficiency. The standard engine for LS and 1LT models is the Ecotec 2.2L Ecotec engine. The Ecotec 2.4L four-cylinder is available on the 1LT and standard on the 2LT.

To comply with more stringent emission and diagnostic regulations, the HHR’s 2.2L and 2.4L engines receive a new catalytic converter system with slightly elevated exhaust system backpressure. The 2.4L engine is rated at 172 horsepower (128 kW) and 167 lb.-ft. of torque (226 Nm); at the time of publication, the 2.2L was still undergoing certification to SAE standards. The information will be updated as soon as it is available.

Both the 2.2L and the 2.4L engine have distinct performance and hardware differences, but share a basic structure and construction that includes:

• Dual overhead camshafts (DOHC) and four valves per cylinder
  
• Twin counter-rotating balance shafts for operational smoothness
  
• Electronic throttle control
  
• Low-friction, roller-finger follower valvetrain with hydraulic lash adjusters
  
• Low-maintenance chain-drive for the camshafts
  
• Direct-mount accessories, which reduce or eliminate traditional sources of noise and vibration
  
• Full-circle transmission mount to reduce noise and vibration
  
• GM Oil Life System, which can reduce the frequency for oil changes
  
• Innovative cast-in oil filter housing, which eliminates the need to crawl under the vehicle to perform oil changes and eliminates throwaway oil filter cans that retain used oil
  
• Catalytic converter located close to exhaust manifold to speed catalyst “light off,” reducing hydrocarbon emissions
  

Chassis and suspension details

Extensive use of high-strength steel and ultra-high-strength steel in key structural components, including the rocker panels and cross-vehicle reinforcing beam, bolsters the vehicle’s rigid feel while providing additional side-impact support. The cockpit “safety cage” provides load-carrying protection and, along with laser-welded blanks used in the doorframes, front doors and rear doors, contributes to the HHR’s NVH characteristics and build quality.

All models are equipped with rack-and-pinion steering with electric power steering (EPS) – a speed-sensitive, variable-effort system with specific tuning calibrations to match the performance characteristics of each of the suspension settings. EPS eliminates the use of an engine-driven power steering pump, as well as the corresponding fluid reservoir and plumbing, reducing both fuel consumption and the potential source of an environmental contaminant.

Brakes consist of large front discs and rear drums, with ABS and traction control standard on 2LT models (traction control available only with automatic transmission) and available on LS and 1LT models.

New for 2008 is the availability of StabiliTrak, GM’s advanced electronic stability control system. It assists the vehicle in maintaining the driver’s intended path by applying a brake force at any corner of the vehicle independent of the driver’s use of the brake pedal. StabiliTrak is integrated with the traction control and ABS brake systems .

Safety

HHR is designed to protect occupants in the event of a crash – a design that helped garner a five-star crash safety rating for both frontal crashes (driver and right-front passenger) and side crashes (front- and outboard rear-seat passengers, when equipped with side air bags) from the National Highway Traffic Safety Administration’s New Car Assessment Program tests. Standard safety features include dual-stage frontal air bags with GM’s Passenger Sensing System. This system works with the front passenger seat and differentiates between adults – 5 th percentile females and larger – and small children or child seats to adjust air bag deployment.

The OnStar service standard on the 2008 HHR includes the General Motors Advanced Automatic Crash Notification (AACN) system, making crash data available to the participating 911 centers to help them dispatch the appropriate live-saving personnel and equipment to crash scenes faster.