Models:

Chevrolet HHR LS and LT (1LT and 2LT); HHR Panel LS and LT (1LT and 2LT); HHR 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 FlexFuel (LE8)

Ecotec 2.4L FlexFuel (LE9)

Ecotec 2.0L DI Turbo VVT (LNF)

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:

DOHC, four valves per cylinder; continuously variable valve timing

DOHC, four valves per cylinder; continuously variable valve timing

DOHC, four 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:

10.0:1

10.4:1

9.2:1

Horsepower (hp / kW @ rpm):

155 / 116 @ 6100 (gas)
161 / 120 @ 6000 (E85)

172 / 128 @ 5800 (gas)
176 / 131 @ 5800 (E85)

260 / 194 @ 5300* (manual trans)
250 / 186 @ 5900* (automatic trans)

Torque (lb-ft / Nm @ rpm):

150 / 203 @ 4800 (gas)
158 / 214 @ 4600 (E85)

167 / 226 @ 4500 (gas)
170 / 230 @ 5000 (E85)

260 / 353 @ 2000 (manual)
222 / 301 @ 1650 (automatic)

Recommended fuel:

regular unleaded or E85

premium recommended not required or E85

premium recommended not required

Maximum engine speed (rpm):

6750

6750

6350

Emissions controls:

close-coupled catalytic converters; Quick-Sync 24x ignition system; returnless fuel rail; fast-response O 2 sensor

close-coupled catalytic converters; Quick-Sync 24x ignition system; returnless fuel rail; fast-response O 2 sensor

close-coupled catalytic converters, Quick-Sync 58x ignition system; returnless fuel rail; wide-range O 2 sensor

EPA-estimated fuel economy (city / hwy):

HHR / HHR Panel

22 / 32 (man. w/ gas)

22 / 30 (auto. w/ gas)

16 / 23 (man. w/ E85)

16 / 22 (auto. w/ E85)

HHR / HHR Panel

22 / 32 (man. w/ gas)

22 / 30 (auto. w/ gas)

16 / 23 (man. w/ E85)

16 / 22 (auto. w/ E85)

HHR SS

21 / 29 (manual)

19 / 29 (automatic)

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