Models:

Chevrolet HHR LS and LT (1LT and 2LT); HHR Panel LS and LT (1LT and 2LT); HHR SS and HHR Panel SS

Body style / driveline:

5-passenger, 5-door / front-engine, front -wheel drive (HHR LS, LT and SS); 2-passenger, 5-door / front-engine, front -wheel drive (HHR Panel LS, LT and SS)

Construction:

welded steel monocoque; galvanized except for roof

EPA vehicle class:

sport utility vehicle – 2WD

Manufacturing location:

Ramos Arizpe, Mexico

Key competitors:

Ford Escape, Jeep Liberty, Scion xB, Honda Element, Chrysler PT Cruiser

Ecotec 2.2L

Ecotec 2.4L

Ecotec 2.0L DI Turbo VVT

Application

std. on LS and 1LT; std. on Panel LS and 1LT

std. on 2LT; opt on 1LT; std. on Panel 2LT and opt. on 1LT

std. on HHR SS and HHR Panel SS

Type:

2.2L DOHC I-4

2.4L DOHC I-4

2.0L DOHC I-4

Displacement (cu in / cc):

134 / 2189

145 / 2384

122 / 1998

Bore & stroke (in / mm):

3.39 x 3.72 / 86 x 94.6

3.46 x 3.85 / 88 x 98

3.39 x 3.39 / 86 x 86

Block material:

cast aluminum

cast aluminum

cast aluminum

Cylinder head material:

cast aluminum

cast aluminum

cast aluminum

Valvetrain:

overhead camshafts,
4 valves per cylinder; variable valve timing

overhead camshafts, 4 valves per cylinder; variable valve timing

DOHC, 4 valves per cylinder; dual continuously variable valve timing

Ignition system:

electronic direct

electronic direct

individual coil-on-plug

Fuel delivery:

sequential fuel injection with electronic throttle control

sequential fuel injection with electronic throttle control

direct-injection with a variable high-pressure rail and electronic throttle control

Compression ratio:

10:1

10.4:1

9.2:1

Horsepower (hp / kW @ rpm):

155 / 116 kW @ 6100

172 / 128 @ 5800

260 / 194 @ 5300* (manual trans)
250 / 186 @ 5550* (automatic trans)

Torque (lb-ft / Nm @ rpm):

150 / 203 @ 4800

167 / 226 @ 4500

260 / 353 @ 2000 (manual)
223 / 302 @ 1650 (automatic)

Recommended fuel:

regular unleaded

premium recommended but not required

premium recommended but not required

Maximum engine speed (rpm):

6500

6800

6300

Emissions controls:

close-coupled catalytic converters; Quick-Sync 24x ignition system; returnless fuel rail; fast-response O₂ sensor

close-coupled catalytic converters; Quick-Sync 24x ignition system; returnless fuel rail; fast-response O₂ sensor

close-coupled catalytic converters, Quick-Sync 58x ignition system; returnless fuel rail; wide-range O₂ sensor

EPA estimated fuel economy (city / hwy):

HHR
22 / 30
HHR Panel
TBD

HHR
22 / 28 (automatic)
22 / 28 (manual)
HHR Panel
20 / 29 (automatic)
22 / 28 (manual)

HHR SS
21 / 29 (manual)
20 / 28 (automatic)
HHR Panel SS
19 / 29 (automatic)
21 / 21 (manual)

F35 5-speed manual (SS models)

F23 5-speed manual (LS and LT models)

Hydra-Matic 4T45 4-speed automatic

Gear ratios: (:1):

First:

3.38

3.58

2.95

Second:

1.76

2.02

1.62

Third:

1.18

1.35

1.00

Fourth:

0.89

0.98

0.68

Fifth:

0.70

0.69

–

Reverse:

3.17

3.31

2.14

Final drive ratio:

4.05:1

4.17:1

3.91:1 (LS & LT)
3.29:1 (SS)

Front:

independent strut-type suspension with direct-acting stabilizer bar; 23mm solid stabilizer bar on SS

Rear:

semi-independent torsion beam with stabilizer bar; monotube gas shocks, 24mm solid stabilizer bar on SS

Steering type:

electric, power-assisted variable-speed rack-and-pinion

Steering ratio:

18.5:1 (LS & LT)
14.8:1 (SS)

Steering wheel turns, lock-to-lock:

3.5 (LS & LT w/ FE1)
3.25 (LS & LT w/ FE3)
TBD (SS)

Turning circle, curb-to-curb (ft / m):

36 / 11 (LS & LT w/ FE1)
37.7 / 11.5 (LS & LT w/ FE3)
39.4 / 12 (SS)

Type:

LS & LT: power front disc/rear drum with standard ABS
SS: power 4-wheel disc with standard ABS; 54mm single-piston front calipers and 38mm single-piston rear calipers

Front rotor diameter x thickness (in / mm):

LS, LT & SS: 11.65 x 1.02 / 296 x 26 (vented disc)

Rear drum / disc diameter x width (in / mm):

LS & LT: 9.84 x 1.7 / 250 x 45 (drum)
SS: 9.84 x 0.55 / 270 x 14 (solid disc)

Wheel size and type:

LS: 16-inch steel w/ covers
1LT: 16-inch fascia-spoke w/ Sterling Silver finish (std.); 16-inch chrome aluminum (opt.)
2LT: 17-inch ChromeTech aluminum
SS: 18 x 7.5-inch split-spoke forged aluminum

Tires:

P215/55R16 all-season steel-belted radial blackwall
P215/50R17 all-season steel-belted radial blackwall
P225/45R18 Michelin Pilot MXM4

Wheelbase (in / mm):

103.6 / 2631

Overall length (in / mm):

176.2 / 4475 (LS & LT)
176.5 / 4483 (SS)

Overall width (in / mm):

69.1 / 1755

Overall height (in / mm):

62.5 / 1588

Track (in / mm):

front: 58.7 / 1491
rear: 58.7 / 1491

Minimum ground clearance (in / mm):

6.3 / 159

Curb weight, base (lb / kg):

LS & LT w/ 2.2L: 3155 / 1431
LS & LT w/ 2.4L: 3208 / 1455
SS: 3280 / 1488 (manual)
SS: 3353 / 1524 (automatic)

Weight distribution (front / rear):

57 / 43 (LS & LT)
59 / 41 (SS)

HHR

HHR Panel

Seating capacity:

5

2

Headroom (in / mm):

front: 39.6 / 1006

front: 39.6 / 1006

rear: 39 / 991

Legroom (in / mm):

front: 40.6 / 1031

front: 40.6 / 1031

rear: 39.5 / 1004

Shoulder room (in / mm):

front: 53.5 / 1358

front: 53.5 / 1358

rear: 52.7 / 1339

Hip room (in / mm):

front: 50.1 / 1273

front: 50.1 / 1273

rear: 50.6 / 1266

Passenger volume (cu ft / L)

97.4 / 2758

Cargo volume (cu ft / L):

63.1 / 1787 (HHR w/ rear seats removed & HHR Panel incl. under-floor storage)
57.7 / 1634 (HHR w/ rear seats folded & HHR Panel above load floor)
25.2 / 638 (HHR w/ rear seats up)

GVWR, standard (lb / kg):

4173 / 1893 (LS & LT)
4244 / 1925 (SS)

Payload, base (lb / kg):

900 / 408

Trailer towing maximum (lb / kg):

1000 / 453 (LS & LT)
not recommended (SS)

Fuel tank (gal / L):

16.2 / 49

Engine oil (qt / L):

5 / 4.7 (all engines)

Cooling system (qt / L):

2.2L: 7.4 / 7
2.4L w/ manual trans: 8.7 / 8.2
2.4L w/ auto trans: 8.5 / 8
2.0L: TBD