2010 VOLVO XC90 fuel consumption

02 Instruments and controls
Trip computer
02

* Option/accessory, for more information, see Introduction.71 Trip computer*
G026956
READ (press to acknowledge/confirm/
erase a message)
Thumb wheel (used to scroll among the trip
computer menus)
RESET
The trip computer stores information gathered
from several systems in your vehicle and has
four menus that can be displayed in the text
window.
•Driving distance on current fuel reserve
•Average fuel consumption
•Current fuel consumption
•Average speed
•Current speed in mph (Canadian models
only)
•DSTC (see page 147 for detailed informa-
tion)
NOTE
Warning messages from the vehicle's moni-
toring systems will override the trip com-
puter function. If a warning message is dis-
played in the text window while you are
using the trip computer, you must acknowl-
edge the message by pressing button A.
Press button A again to return to the trip
computer function.
1. Trip computer controls and functionsThe trip computer functions can be accessed
by twisting INFO (B) one step at a time in either
direction. Twisting a final time returns you to
the original function.
The trip computer can be reset (current data
will be erased from system memory) by press-
ing RESET (button C).
2. Driving distance on current fuel
reserve
This function shows the approximate distance
that can be driven on the fuel remaining in the
tank. The calculation is based on average fuel
consumption during the last 20 miles (30 km)of driving and the amount of fuel remaining in
the tank when the reading was taken.
When
"----" is displayed in the text window,
refuel as soon as possible.
3. Average fuel consumptionThis value indicates fuel consumption since the
last time the trip computer was reset (by press-
ing RESET, button C). When the engine is
switched off, information on fuel consumption
is stored and remains in system memory until
the RESET (button C) is pressed again.
4. Current fuel consumptionThis value indicates the current fuel consump-
tion, based on readings taken once per sec-
ond. When the vehicle is not moving, "----" will
be displayed.
5. Average speedThis value indicates average speed since the
last time the trip computer was reset (by press-
ing RESET, button C). When the engine is
switched off, information on average speed is
stored and remains in system memory until the
RESET (button C) is pressed again.

06 Starting and driving
General information
06
130
Engine oil
Although some oil consumption occurs during
normal engine operation, more oil is consumed
when the engine is new as the internal parts
generate higher friction while wearing-in to
each other. From the time the engine is new
until the first maintenance is performed, the oil
consumption could be higher than normal. For
this reason, it is especially important to check
the oil every time you refuel your vehicle during
this period, see page 209.
Fuel requirements
Deposit control gasoline (detergent
additives)
Volvo recommends the use of detergent gas-
oline to control engine deposits. Detergent
gasoline is effective in keeping injectors and
intake valves clean. Consistent use of deposit
control gasolines will help ensure good driva-
bility and fuel economy. If you are not sure
whether the gasoline contains deposit control
additives, check with the service station oper-
ator.
NOTE
Volvo does not recommend the use of exter-
nal fuel injector cleaning systems.
Unleaded fuelEach Volvo has a three-way catalytic converter
and must use only unleaded gasoline. U.S. and
Canadian regulations require that pumps deliv-
ering unleaded gasoline be labelled "UNLEA-
DED". Only these pumps have nozzles which
fit your vehicle's filler inlet. It is unlawful to dis-
pense leaded fuel into a vehicle labelled
"unleaded gasoline only". Leaded gasoline
damages the three-way catalytic converter and
the heated oxygen sensor system. Repeated
use of leaded gasoline will lessen the effective-
ness of the emission control system and could
result in loss of emission warranty coverage.
State and local vehicle inspection programs
will make detection of misfueling easier, pos-
sibly resulting in emission test failure for mis-
fueled vehicles.
NOTE
Some U.S. and Canadian gasolines contain
an octane enhancing additive called methyl-
cyclopentadienyl manganese tricarbonyl
(MMT). If such fuels are used, your Emission
Control System performance may be affec-
ted, and the Check Engine Light (malfunc-
tion indicator lamp) located on your instru-
ment panel may light. If this occurs, please
return your vehicle to a trained and qualified
Volvo service technician for maintenance.
Gasoline containing alcohol and ethers"Oxygenated fuels"
Some fuel suppliers sell gasoline containing
"oxygenates" which are usually alcohols or
ethers. In some areas, state or local laws
require that the service pump be marked indi-
cating use of alcohols or ethers. However,
there are areas in which the pumps are
unmarked. If you are not sure whether there is
alcohol or ethers in the gasoline you buy, check
with the service station operator. To meet sea-
sonal air quality standards, some areas require
the use of "oxygenated" fuel.
Volvo allows the use of the following "oxygen-
ated" fuels; however, the octane ratings listed
on page 131 must still be met.
Alcohol – Ethanol: Fuels containing up to 10%
ethanol by volume may be used. Ethanol may
also be referred to as Ethyl alcohol, or "Gaso-
hol".
Ethers – MTBE: Fuels containing up to 15%
MTBE may be used.

06 Starting and driving
Economical driving
06
138
Economical driving conserves natural
resources
Better driving economy may be obtained by
thinking ahead, avoiding rapid starts and stops
and adjusting the speed of your vehicle to
immediate traffic conditions. Observe the fol-
lowing rules:
•Bring the engine to normal operating tem-
perature as soon as possible by driving
with a light foot on the accelerator pedal for
the first few minutes of operation. A cold
engine uses more fuel and is subject to
increased wear.
•Whenever possible, avoid using the vehicle
for driving short distances. This does not
allow the engine to reach normal operating
temperature.
•Drive carefully and avoid rapid acceleration
and hard braking.
•Use the transmission's D (Drive) position
as often as possible and avoid using "kick-
down" to help improve fuel economy.
•Do not exceed posted speed limits.
•Avoid carrying unnecessary items (extra
load) in the vehicle.
•Maintain correct tire pressure. Check tire
pressure regularly (when tires are cold).
•Remove snow tires when threat of snow or
ice has ended.
•Note that roof racks, ski racks, etc,
increase air resistance and also fuel con-
sumption.
•At highway driving speeds, fuel consump-
tion will be lower with the air conditioning
on and the windows closed than with the
air conditioning off and the windows open.
•Using the onboard trip computer's fuel
consumption modes can help you learn
how to drive more economically.
Other factors that decrease gas mileage
are:
•Dirty air cleaner
•Dirty engine oil and clogged oil filter
•Dragging brakes
•Incorrect front end alignment.
Some of the above mentioned items and others
are checked at the standard Maintenance
Service intervals.
CAUTION
Drive slowly and carefully if going through
standing water (i.e. flooded roadways, etc.).
Damage to the engine could result if excess
water is drawn in through the air intake sys-
tem. Never drive the vehicle in water deeper
than 18 inches (48 cm).

06 Starting and driving
Cold weather precautions
06
158
If you wish to check your vehicle before the
approach of cold weather, the following advice
is worth noting:
•Make sure that the engine coolant contains
50 percent antifreeze. Any other mixture
will reduce freeze protection. This gives
protection against freezing down to –31 °F
(–35 °C). See section "Coolant".
•The use of "recycled" antifreeze is not
approved by Volvo. Different types of
antifreeze must not be mixed.
•Volvo recommends using only genuine
Volvo antifreeze in your vehicle's radiator.
Your Volvo retailer stocks plenty of Volvo
engine coolant to protect your vehicle dur-
ing cold weather.
•Try to keep the fuel tank well filled – this
prevents the formation of condensation in
the tank. In addition, in extremely cold
weather conditions it is worthwhile to add
fuel line de-icer before refueling.
•The viscosity of the engine oil is important.
Oil with low viscosity (thinner oil) improves
cold-weather starting as well as decreas-
ing fuel consumption while the engine is
warming up. For winter use, 5W-30 oil, par-
ticularly the synthetic type
1, is recom-
mended. Be sure to use good quality oil but
do not use cold-weather oil for hard drivingor in warm weather. See section "Engine
oil" for more information.
•The load placed on the battery is greater
during the winter since the windshield wip-
ers, lighting, etc. are used more often.
Moreover, the capacity of the battery
decreases as the temperature drops. In
very cold weather, a poorly charged bat-
tery can freeze and be damaged. It is there-
fore advisable to check the state of charge
more frequently and spray an antirust oil on
the battery posts.
•Volvo recommends the use of snow tires
on all four wheels for winter driving – see
section "Wheels and tires."
•To prevent the washer fluid reservoir
from freezing, add washer solvents con-
taining antifreeze (see page 211 for the
location of the washer fluid reservoir). This
is important since dirt is often splashed on
the windshield during winter driving,
requiring the frequent use of the washers
and wipers. Volvo Washer Solvent should
be diluted as follows:
•Down to 14 ° F (–10 ° C): 1 part washer
solvent and 4 parts water
•Down to 5 ° F (–15 ° C): 1 part washer sol-
vent and 3 parts water
•Down to 0 ° F (–18 ° C):1 part washer sol-
vent and 2 parts water
•Down to –18 ° F (–28 ° C): 1 part washer
solvent and 1 part water
•Use Volvo Teflon Lock Spray in the locks.
NOTE
Avoid the use of de-icing sprays as they can
cause damage to the locks.
W – Winter/Wet driving mode – enhanced
vehicle traction
•Mode W will only function if the gear selec-
tor is in the (D)rive position.
•Press the button at the base of the gear
selector to engage/disengage this driving
mode.
•An LED in the button will light up to indicate
that W is engaged and this will also be dis-
played in the instrument panel (see
page 54).
•This mode may be selected for starting/
moving off on slippery roads.
1Synthetic oil is not used when the oil is changed at the normal maintenance service intervals except at owner request and at additional charge. Please consult your Volvo retailer.

06 Starting and driving
Before a long distance trip
06
159
It is always worthwhile to have your vehicle
checked by a trained and qualified Volvo serv-
ice technician before driving long distances.
Your retailer or service technician will also be
able to supply you with bulbs, fuses, spark
plugs and wiper blades for your use in the event
that problems occur.
As a minimum, the following items should be
checked before any long trip:
•Check that engine runs smoothly and that
fuel consumption is normal.
•Check for fuel, oil, and fluid leakage.
•Check transmission oil level1.
•Check condition of drive belts.
•Check state of the battery's charge.
•Examine tires carefully (the spare tire as
well), and replace those that are worn.
Check tire pressures.
•The brakes, front wheel alignment, and
steering gear should be checked by a
trained and qualified Volvo service techni-
cian only.
•Check all lights, including high beams.
•Reflective warning triangles are legally
required in some states/provinces.
•Have a word with your Volvo retailer if you
intend to drive in countries where it may be
difficult to obtain the correct fuel.
•Consider your destination. If you will be
driving through an area where snow or ice
are likely to occur, consider snow tires.
1To prevent injury from contact with hot surfaces, do not inspect your vehicle’s transmission fluid yourself. Have your vehicle’s transmission fluid level inspected by a qualified Volvo service technician.

12 Index
12
281
Child restraint anchors......................... 43, 45
Child restraints
recalls and registration......................... 46
Child safety................................................ 33
Child safety locks....................................126
Climate system.......................................... 90
refrigerant............................................. 90
Clock reset button..................................... 54
Coat hanger............................................. 112
Cold weather precautions........................ 158
Compact disc care
CD care............................................... 257
Convertible seats....................................... 39
Coolant.................................................... 211
changing............................................. 206
Courtesy light........................................... 107
Cup holder
rear seat.............................................. 111
Curb weight............................................. 176
Current fuel consumption.......................... 71D
Defroster
rear window and door mirrors.............. 70
rear window and mirrors....................... 96
windshield............................................. 95
Detachable trailer hitch............................ 156
Dimensions.............................................. 266
Disabling the passenger's side front air-
bag............................................................. 25
Display, instrument panel.......................... 54
Dolby Pro Logic II (DPL II)........................ 241
Door mirrors............................................... 81
defroster............................................... 70
Door mirrors, folding.................................. 60
Driving conditions, difficult......................139
Driving economically................................ 138
Driving through water..............................139
E
Economical driving.................................. 138
Electrically operated moonroof.................. 83
Electrical system...................................... 275Emission inspection readiness................ 203
Engine
specifications...................................... 274
starting................................................ 135
Engine oil................................................. 208
specifications...................................... 273
F
Federal Clean Air Act............................... 202
Flat tires
changing............................................. 180
repairing with tire sealing system....... 184
Fog light..................................................... 56
Fog lights
front*..................................................... 64
Folding door mirrors.................................. 60
Front airbags.................................. 21, 22, 25
Front seat
folding backrest.................................. 100
manually adjusted............................... 100
Front seats
power.................................................. 100
ventilated.............................................. 93
XC90 Executive.................................. 102