2011 SUBARU IMPREZA fuel

11-34Maintenance and service
NOTE .The air pressure in a tire increases
by approximately 4.3 psi (30 kPa, 0.3 kgf/cm
2) when the tire becomes warm.
. The tires are considered cold when
the vehicle has been parked for at least
three hours or has been driven less
than one mile (1.6 km).
WARNING
Do not let air out of warm tires to
adjust pressure. Doing so will result
in low tire pressure.
Incorrect tire pressures detract from con-
trollability and ride comfort, and they
cause the tires to wear abnormally. .
Correct tire pressure (tread worn
evenly)
Roadholding is good, and steering is
responsive. Rolling resistance is low, so
fuel consumption is also lower. .
Abnormally low tire pressure (tread
worn at shoulders)Rolling resistance is high, so fuel con-
sumption is also higher.

Specifications..................................................... 12-2
Dimensions ........................................................ 12-2
Engine ............................................................... 12-3
Electrical system ................................................ 12-3
Fuel ................................................................... 12-4
Engine oil .......................................................... 12-5
Manual transmission, front differential and rear differential gear oil ........................................... 12-8
Fluids ................................................................ 12-9
Engine coolant ................................................. 12-10 Tires
................................................................ 12-11
Wheel alignment .............................................. 12-11
Fuses and circuits ........................................... 12-12
Fuse panel located in the passenger compartment ................................................. 12-12
Fuse panel located in the engine compartment ................................................. 12-14
Bulb chart ......................................................... 12-16
Vehicle identification ....................................... 12-19Specifications
12

12-4Specifications
&Fuel
NOTE
The engine is designed to operate using unleaded gasoline.
Model Fuel requirement Fuel tank capacities
Non-turbo 87 AKI (90 RON) or higher
16.9 US gal (64 liters, 14.1 Imp gal)
Turbo Except STI 91 AKI (95 RON) or higher*
1
STI
93 AKI (98 RON) or higher*2
*1: If unleaded gasoline with an octane rating of 91 AKI (95 RON) is not available, unleaded gasoline with an octane rating of 87 AKI (90 RON) or higher
may be temporarily used. For details, refer to
“Fuel ”F 7-3.
*2: If unleaded gasoline with an octane rating of 93 AKI (98 RON) is not available, unleaded gasoline with an octane rating of 91 AKI (95 RON) may be
used with no detriment to engine durability or driveability. For details, refer to “Fuel ”F 7-3.

12-14Specifications
&Fuse panel located in the engine compartment
A) Main fuse Fuse
panel Fuse
rating Circuit
1 30A .ABS unit
. Vehicle Dynamics Con-
trol unit
2 25A .Main fan (cooling fan)
3 10A .Secondary air combina-
tion valve (turbo models)
4 25A .Sub fan (cooling fan)
5 Empty
6 10A .Audio
7 30A .Headlight (low beam)
8 15A .Headlight (high beam)
9 20A .Back-up
10 15A .Horn
11 25A .Rear window defogger
. Mirror heater
12 15A .Fuel pump
13 10A .Automatic transmission
control unit
14 7.5A .Engine control unit
15 15A .Turn and hazard warn-
ing flasher
16 15A .Tail and illumination re-
lay
17 7.5A .Alternator

Vehicle identification1) Vehicle identification number
2) Emission control label
3) Tire inflation pressure label
4) Certification label
5) Vehicle identification number plate
6) Model number label
7) Fuel label
8) Air conditioner labelSpecifications
12-19

crease in temperature could cause
tread separation, and failure of the
tire(s). Possible resulting loss of
vehicle control could lead to anaccident. !Measuring and adjusting air
pressure to achieve proper in-
flation
Check and, if necessary, adjust the
pressure of each tire (including the
spare) at least once a month and
before any long journey. Check the
tire pressures when the tires are
cold. Use a pressure gauge to
adjust the tire pressures to the
specific values. Driving even a
short distance warms up the tires
and increases the tire pressures.
Also, the tire pressures are affected
by the outside temperature. It is
best to check tire pressure out-
doors before driving the vehicle.
When a tire becomes warm, the air
inside it expands, causing the tire
pressure to increase. Be careful not
to mistakenly release air from a
warm tire to reduce its pressure. &
Glossary of tire terminology
. Accessory weight
The combined weight (in excess of
those standard items which may be
replaced) of automatic transmis-
sion, power steering, power brakes,
power windows, power seats, radio,
and heater, to the extent that these
items are available as factory-in-
stalled equipment (whether in-
stalled or not). . Bead
The part of the tire that is made of
steel wires, wrapped or reinforced
by ply cords and that is shaped to fit
the rim.. Bead separation
A breakdown of the bond between
components in the bead.. Bias ply tire
A pneumatic tire in which the ply
cords that extend to the beads are
laid at alternate angles substantially
less than 90 degrees to the center-
line of the tread. . Carcass
The tire structure, except tread and sidewall rubber which, when in-
flated, bears the load. .
Chunking
The breaking away of pieces of the
tread or sidewall.. Cold tire pressure
The pressure in a tire that has been
driven less than 1 mile or has been
standing for three hours or more.. Cord
The strands forming the plies in the tire. . Cord separation
The parting of cords from adjacent
rubber compounds.. Cracking
Any parting within the tread, side-
wall, or inner liner of the tire
extending to cord material. . Curb weight
The weight of a motor vehicle with
standard equipment including the
maximum capacity of fuel, oil and
coolant, and if so equipped, air
conditioning and additional weight
optional engine.
Consumer information and Reporting safety defects
13-5
– CONTINUED –

Exhaust gas (carbon monoxide)............................. 6, 8-2
Hood .................................................................... 11-5
Oil............................................................... 11-10, 12-5 Overheating .......................................................... 9-13
Starting ................................................................... 7-9
Stopping ............................................................... 7-10
Exterior care .............................................................. 10-2
F
Flat tires ..................................................................... 9-6
Floor mat .................................................................. 6-11
Fluid level Automatic transmission .......................................... 11-22
Brake .................................................................. 11-25
Clutch .................................................................. 11-26
Power steering ..................................................... 11-24
Fog light
Bulb .................................................................... 11-50
Indicator light ......................................................... 3-27
Switch .................................................................. 3-36
Folding mirror switch .................................................. 3-48
Front Differential gear oil ........................................ 11-23, 12-8
Fog light ...................................................... 3-36, 11-50
Fog light indicator light ............................................ 3-27
Seatbelt pretensioners ............................................ 1-19
Turn signal light .................................................... 11-50
Front seats .................................................................. 1-2
Active head restraint ................................................. 1-5
Forward and backward adjustment ............................. 1-3
Head restraint adjustment ......................................... 1-4 Reclining
................................................................ 1-3
Seat cushion height adjustment ... .............................. 1-4
Fuel ........................................................................... 7-3
Consumption indicator ............................................. 3-29
Economy hints ........................................................ 8-2
Filler lid and cap ...................................................... 7-4
Gauge ................................................................... 3-10
Requirements ................................................. 7-3, 12-4
Fuses ..................................................................... 11-45
Main fuse ............................................................ 11-46
Fuses and circuits .................................................... 12-12
G
GAWR (Gross Axle Weight Rating) .. ............................. 8-13
Glove box ................................................................... 6-5
GVWR (Gross Vehicle Weight Rating) ........................... 8-13
H
Hands-free system. ..................................................... 5-46
Hazard warning flasher .......................................... 3-5, 9-2
Head restraint adjustment
Front seat ............................................................... 1-4
Rear seat ............................................................... 1-8
Headlight Beam leveler. ......................................................... 3-34
Bulb replacement ................................................. 11-47
Bulb replacing ...................................................... 11-47
Bulb wattage ........................................................ 12-16
Control switch ........................................................ 3-31
Flasher .................................................................. 3-32
Indicator light ......................................................... 3-27 Index
14-5

LightBack-up (4-door) ................................................... 11-51
Back-up (5-door) ................................................... 11-52
Brake/Tail and rear side marker (4-door) .................. 11-51
Cargo area .............................................................. 6-2
Control switch ........................................................ 3-31
Dome ..................................................................... 6-2
Front fog ...................................................... 3-36, 11-50
Front position ........................................................ 3-32
High mount stop ................................................... 11-55
Ignition switch .......................................................... 3-5
License plate ........................................................ 11-53
Map ............................................................. 6-3, 11-53
Rear combination .................................................. 11-51
Trunk ................................................................... 11-55
Turn signal ......................................... 3-33, 11-50, 11-51
Limited slip differential (LSD) ....................................... 7-30
Loading your vehicle .................................................. 8-12
Low fuel warning light ......................................... 3-10, 3-22
Low tire pressure warning light .................................... 3-19
Lower and tether anchorage ........................................ 1-29
LSD (Limited slip differential) ....................................... 7-30
M
Main fuse ................................................................. 11-46
Maintenance
Precautions ........................................................... 11-3
Schedule .............................................................. 11-3
Seatbelt ................................................................ 1-19
Tools ...................................................................... 9-4 Malfunction indicator lamp (check engine warning
light) ...................................................................... 3-16
Manual
Climate control system ............................................. 4-3
Transmission oil ........................................... 11-21, 12-8
Transmission-5 speeds ........................................... 7-17
Transmission-6 speeds ........................................... 7-15
Map light ........................................................... 6-3, 11-53
Meters and gauges ...................................................... 3-6
Mirror defogger .......................................................... 3-48
Mirrors ...................................................................... 3-40
Moonroof ........................................................... 2-29, 9-19
N
New vehicle break-in driving ......................................... 8-2
O
Odometer/Trip meter .................................................... 3-8
Off road driving ........................................................... 8-6
Oil filter ................................................................... 11-11
Oil level
Engine ................................................................ 11-10
Front differential gear ............................................ 11-23
Manual transmission ............................................. 11-21
Rear differential gear ............................................ 11-24
Oil pressure warning light ............................................ 3-18
Outside Mirror defogger ...................................................... 3-48
Mirrors .................................................................. 3-47
Temperature indicator .............................................. 3-29
Overheating engine .................................................... 9-13 Index
14-7