fuel consumption VOLVO S80 2015 Owner´s Manual

03 Your driving environment
Eco*
03
128* Option/accessory, for more information, see Introduction.
Introduction
Eco is a function 1
developed by Volvo to give
the driver the opportunity to actively drive more economically and to help reduce fuelconsumption.
When Eco is activated, thefollowing functions are modi-fied:
•The automatic transmission's shifting points
• The engine management system andaccelerator pedal response
• Stop/stop function (see page 131): theengine can auto-stop before the vehiclehas come to a full stop
• Eco Coast functionality is activated:engine braking is disabled
• Climate system settings: certain functions(e.g., air conditioning) will be temporarilyreduced or deactivated
NOTE
When Eco is activated, several climate system parameters are changed and thefunction of certain current-consuming sys-tems will be reduced. Pressing the
AC button will reset the cli-
mate system but at a reduced level.
Function
ECO On/Off button in the center console
ECO symbol in the instrument panel
When the engine is switched off, ECO is deactivated and must be reactivated each time the engine is started (with the exceptionof certain engines). The
ECO symbol will be displayed in the
instrument panel and the indicator light in the ECO button will be on when Eco is activated.
Eco on or offWhen ECO is deactivated, the ECO symbol will not be
displayed in the instrument panel and the indicator lightin the ECO button will be off.
The function will remaindeactivated until the buttonis pressed again.
Eco CoastEco Coast is an integral part of the Eco func- tion and essentially deactivates engine brak-ing, allowing the vehicle to roll freely.
NOTE
To function optimally, Eco Coast should primarily be used when the vehicle cancoast as far as possible.
When the driver releases the accelerator pedal, the transmission is automatically dis-
1 Option on models equipped with certain 4-cylinder engines

03 Your driving environment
Eco*
03
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* Option/accessory, for more information, see Introduction.129
engaged from the engine and engine rpm will be reduced to the idle level(approx. 700-800 rpm), which helps reducefuel consumption. This feature is primarily intended to be used in driving situations where a decrease inspeed is expected, such as when approach-ing an intersection or a traffic light.
Eco Coast enables proactive driving with as little braking as possible.
Combinations of On and OffDepending on the driving situation, Eco can be used in different ways to help reduce fuelconsumption:
• Eco activated
: this enables Eco Coast,
which allows the vehicle to roll freely for
as far as possible when the driver relea-
ses the accelerator pedal (e.g., when approaching a traffic light or intersection).
or
• Eco deactivated
: engine braking can be
used when the vehicle will only roll for
a short distance (in heavy traffic, etc.) or
when driving down hills .
To help keep fuel consumption as low as possible, Eco Coast should not be used intraffic situations where the brakes have toused frequently.
Activating Eco CoastEco Coast is activated when the accelerator pedal is released completely if:
• Eco is activated
• The gear selector is in
D
• The vehicle's speed is between approxi- mately 40–85 mph (65–140 km/h). Alwaysobserve posted speed limits
• The gradient of a down-slope is less thanapproximately 6%
Deactivating Eco CoastIn certain situations, it may be advisable to switch off the Eco Coast function, such as:
• When driving down steep hills, in order to utilize engine braking
• Prior to passing another vehicle, in orderto do so as safely as possible
Deactivating Eco Coast (and reactivating engine braking) can be done in the followingways:
• Press the
ECO button on the center con-
sole
• Move the gear selector to the manual "
S
+/– " position
• Change gears using the steering wheel paddles*
• Press the brake or accelerator pedal
Eco Coast limitationsThis function will not be available if:
• Cruise control is activated
• The gradient of a down-slope is morethan approximately 6%
• The steering wheel paddles* are used tomanually change gears
• The engine and/or transmission have notreached their normal operating tempera-ture
• The gear selector is moved from
D to the
manual " S+/–" position
• The vehicle's speed is not within the40–85 mph (65–140 km/h). interval
Additional information and settings

03 Your driving environment
Start/Stop*
03
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* Option/accessory, for more information, see Introduction.131
Introduction
Start/Stop is a function that is available with certain engines/transmissions. It temporarilyswitches off the engine when the vehicle isnot moving, for instance in heavy traffic or ata traffic light to help reduce fuel consumption.
Function and use
Start/Stop symbol in the instrument panel
Start/Stop button on the center console
Start/Stop is activated automatically each time the engine is started 1
. The symbol in the
instrument panel will be displayed for several seconds when the engine starts and the indi-cator light in the On/Off button will remainilluminated while the function is activated. All of the vehicle's systems will function while the engine is auto-stopped, although the function of certain systems may reduced atthis time. For example, blower speed andhigh infotainment system volume may bereduced to help conserve the battery'scapacity.
Auto-stopping the engineNormally, when Start/Stop is activated andthe brakes are applied until the vehicle comesto a standstill, the engine will auto-stop auto-matically
if the driver keeps the brake pedal
depressed .
To remind the driver that the enginehas been auto-stopped, theStart/Stop symbol will illuminate inthe instrument panel and remain on
until the engine restarts.
If the ECO function* (see page 128) is activated, theengine may auto-stop beforethe vehicle comes to a com-plete standstill.
Auto-starting the engineThe engine restarts as soon as the driver releases the brake pedal.
Deactivating Start/StopIn certain situations (e.g.,driving in heavy, stop-and-gotraffic), it may be preferableto deactivate Start/Stop. This is done by pressing the button in the center console.
The indicator light in the button will go out. Start/Stop will remain deactivated until the button is pressed again or until the engine isswitched off and restarted by the driver.
Hill Start Assist (HSA)When starting on steep hills, HSA (see page 121) retains pressure on the brake pedalfor several seconds after the pedal has beenreleased in order to keep the vehicle at astandstill. The brakes will be released afterseveral seconds or when the driver pressesthe accelerator pedal.
1 Not when the engine is started using the optional Engine Remote Start feature, see page 118

05 Comfort and driving pleasure
Trip computer
05
218
FunctionDescription
Digital speed – km/h – mph– NoneThis displays the vehicle's speed digitally in the center of the instrument panel
• Open by pressing
OK, scroll using the thumb wheel, confirm by pressing OK and exit by pressing
ENTER .
Trip comp. opt.
–
Distance to empty
– Fuel consumption
– Average speed
– Trip odometer T1 and total dist.
– Trip odometer T2 and total dist.
Selections among the trip computer information headings are made here. The symbols that have already been selected have a check mark and are displayed in white. Those not selected are not
checked and are displayed in gray:
1. Open the function by pressing OK and scroll to the desired heading using the thumb wheel.
2. Confirm by pressing OK. The symbol will change colors from gray to white and will be checked.
3. Continue this procedure or exit by pressing RESET.
Service statusShows the number of months and mileage until the next scheduled service.
Messages (##)For additional information, see page 199.
Information headingsAny of the information headings in the follow- ing table can be displayed. To do so:
1. Ensure that none of the trip computer
controls are being used in a command sequence; reset them by pressing RESET
twice. 2. Turn the
thumb wheel to begin display-
ing the information headings. Stop on thedesired heading.
3. See the table for an explanation of the heading or the actions that can be taken.

05 Comfort and driving pleasure
Trip computer
05
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219
Information headings in the instrument panelDescription
Trip odometer T1 and total dist.•Press and hold
RESET to reset trip odometer T1.
Trip odometer T2 and total dist.•Press and hold
RESET to reset trip odometer T2.
Distance to emptySee Distance to empty on page 221.
Fuel consumptionCurrent fuel consumption.
Average speedPress and hold RESET to reset Average speed.
-No information will be displayed. This also indicates the beginning/end of the list of infor- mation headings.
Scroll among the trip computer information headings at any time by turning the thumb
wheel until the desired heading is displayed.
Trip computer in models with a digital instrument panel
The trip computer has two different menu groups:
• Trip computer functions
• Trip computer information headings in the instrument panel
Information displays and controls
OK
–press to access the trip computer's
functions or to activate a selection
Thumb wheel –turn to access the list of
trip computer information headings and
to scroll among the alternatives
RESET –press to cancel/reset/exit a func-
tion after a selection has been made
FunctionsTo open and make settings in the trip com- puter functions:
1. Ensure that none of the trip computer controls are being used in a command sequence; reset them by pressing RESET
twice.
2. Press OK to open the list of functions.

05 Comfort and driving pleasure
Trip computer
05
220* Option/accessory, for more information, see Introduction.
3. Use the thumb wheel to scroll among the
functions and select/confirm your choice by pressing OK. 4. After completing your selection, exit by
pressing RESET twice. The following table lists the digital trip com-puter's functions:
FunctionDescription
Trip computer reset
– Average fuel consumption – Average speedNOTE: This function does not reset the trip odometers, see page 222 for a description of how
this is done.
MessagesFor additional information, see page 199.
ThemesSet the way in which information is displayed in the instrument panel, see page 76.
Settings *Select Auto On or Off.
Contrast mode /Color modeAdjust the instrument panel's contrast and color.
Service statusShows the number of months and mileage until the next scheduled service.
Information headingsThree trip computer headings can be dis- played at the same time; one in each of thedisplays (see the previous illustration). One ofthe combinations of information headings inthe following table can be displayed. To doso: 1. Ensure that none of the trip computer
controls are being used in a commandsequence; reset them by pressing RESET
twice.
2. Turn the thumb wheel to begin display-
ing the combinations of information head-ings. Stop on the desired combination. 3. See the table for an explanation of the
heading or the actions that can be taken.
Scroll among the combinations of trip com-puter information headings at any time byturning the thumb wheel until the desired
combination is displayed.

05 Comfort and driving pleasure
Trip computer
05
}}
* Option/accessory, for more information, see Introduction.221
Heading combinationsDescription
Average fuel consumptionTrip odometer T1 + mileageAverage speed• Press and hold
RESET to reset trip odometer T1.
Current fuel consumptionTrip odometer T2 + mileageDistance to empty•Press and hold
RESET to reset trip odometer T2.
Current fuel consumptionMileagemph<>kmhChange between mph<>kmh – see "Digital speed display" on page 221.
-No trip computer informa-
tion displayed-No information will be displayed. This also indicates the begin- ning/end of the list of information headings.
Scroll among the trip computer information headings at any time by turning the thumb
wheel until the desired heading is displayed.
Supplementary information
Average fuel consumptionFuel consumption since the last time this function was reset.
Average speedThe vehicle's average speed since the lasttime this function was reset.
Current fuel consumptionCurrent fuel consumption is calculatedapproximately once a second. When the vehi-cle is moving at low speed, fuel consumptionis displayed per unit of time. At higherspeeds, it is displayed in terms of distance. Miles or kilometers can be displayed, see theheading "Changing units" on page 222
Distance to emptyThis function shows the approximate dis-tance that can be driven on the fuel remaining in the tank. When
Distance to empty shows
"----", there is very little useable fuel remain- ing in that tank; refuel as soon as possible.The calculation is based on average fuel con-sumption during the last 20 miles (30 km) ofdriving and the amount of fuel remaining inthe tank (the accuracy of this figure may varyif your driving style changes). An economicaldriving style will generally increase this dis-tance. See page276 for information about driving economically.
Digital speed display*Speed is expressed in the unit not used bythe instrument panel's speedometer e.g., ifthe normal speedometer is in mph, the tripcomputer will display in the speed in km/hand vice versa.
Resetting an analog instrument panel
Trip odometer(s) and average speed1. Display trip odometer T1 or T1, or Aver- age speed.
2. Press and hold RESET until selected
function is reset.
Each trip computer heading must be reset individually.

05 Comfort and driving pleasure
Trip computer
05
222* Option/accessory, for more information, see Introduction.
Resetting a digital instrument panel
Trip odometer1. Turn the thumb wheel to select the com-
bination of headings containing the trip odometer to be reset.
2. Press and hold RESET until selected trip
odometer is reset.
Average speed and fuel consumption1. Select Trip computer reset and press
OK .
2. Select one of the following alternatives using the thumb wheel and press OK:
• mpg
• mph
• Reset both
3. Finish by pressing RESET.
Changing unitsTo change the unit (miles/km) used to meas- ure distance and speed, go to
MY CAR
SettingsSystem optionsDistance
and fuel units.
NOTE
In addition to changing units in the trip computer, this also changes the units usedin the Volvo Navigation System (VNS)*.
Trip statistics*
Trip information from previous trips regarding average fuel consumption and average speedis stored and can be displayed in the form ofa bar chart.
Function
Trip statistics 2
Each bar represents a driving distance of 1 mile or 10 miles, depending on the current scale; the bar at the far right shows the valuefor the current mile/10 miles. Use
TUNE to change between 1 mile and
10 miles; the marker at the right will also change according to the scale selected.
SettingsSettings can be made in the MY CAR menu
system as follows:
MY CARMy S80Trip statistics:
•
Start new trip: press ENTER to erase all
pervious statistics. Exit the menu by pressing EXIT.
•
Reset for every driving cycle: select by
pressing ENTER. Exit the menu by press-
ing EXIT .
Selecting
Reset for every driving cycle era-
ses all trip statistics automatically if the igni- tion is switched off for at least 4 hours. Whenthe engine is restarted, new statistics will bestored. To get new statistics if the engine is restarted before 4 hours have elapsed, the existingones have to be erased manually by selecting
Start new trip.
For additional information, see page 199.
2 The illustration is generic; certain details may vary from model to model

07 During your trip
Driving recommendations
07
276
General information
Economical driving conserves natural
resources
Better driving economy may be obtained by thinking ahead, avoiding rapid starts andstops and adjusting the speed of your vehicleto immediate traffic conditions. Observe the following rules:
• Bring the engine to normal operating tem- perature as soon as possible by drivingwith a light foot on the accelerator pedalfor the first few minutes of operation. Acold engine uses more fuel and is subjectto increased wear.
• Whenever possible, avoid using the vehi-cle for driving short distances. This doesnot allow the engine to reach normaloperating temperature.
• Drive carefully and avoid rapid accelera-tion and hard braking.
• Use the transmission's Drive (
D) position
as often as possible and avoid using kick-down.
• Using the engine's optional Eco function 1
can help improve fuel economy. Seepage 128 for additional information.
• Do not exceed posted speed limits. •
Avoid carrying unnecessary items (extraload) in the vehicle.
• Maintain correct tire pressure. Check tirepressure regularly (when tires are cold).
• Remove snow tires when threat of snowor 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 conditioningon and the windows closed than with theair conditioning off and the windowsopen.
• Using the onboard trip computer's fuelconsumption modes can help you learnhow 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 oth- ers are checked at the standard maintenanceintervals.
WARNING
Driving with the trunk open: Driving with
the trunk open could lead to poisonous exhaust gases entering the passengercompartment. If the trunk must be keptopen for any reason, proceed as follows:
• Close the windows
• Set the ventilation system control to air flow to floor, windshield and side win- dows and the blower control to itshighest setting.
Weight distribution affects handlingAt the specified curb weight your vehicle has a tendency to understeer, which means thatthe steering wheel has to be turned morethan might seem appropriate for the curva-ture of a bend. This ensures good stabilityand reduces the risk of rear wheel skid.Remember that these properties can alterwith the vehicle load. The heavier the load inthe trunk, the less the tendency to under-steer.
Handling, roadholdingVehicle load, tire design and inflation pres-sure all affect vehicle handling. Therefore,check that the tires are inflated to the recom-mended pressure according to the vehicle
1
Available on certain 4-cyl. engines

07 During your trip
Driving recommendations
07
278
Before a long distance tripIt is always worthwhile to have your vehicle checked by a trained and qualified Volvoservice technician before driving long dis-tances. Your retailer will also be able to sup-ply you with bulbs, fuses, spark plugs andwiper blades for your use in the event thatproblems 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
• Have the transmission oil level checked.
• Check condition of drive belts.
• Check state of the battery's charge.
• Examine tires carefully (the spare tire aswell), and replace those that are worn.Check tire pressures.
• The brakes, front wheel alignment, andsteering gear should be checked by atrained and qualified Volvo service techni-cian only.
• Check all lights, including high beams.
• Reflective warning triangles are legallyrequired in some states/provinces.
• Have a word with a trained and qualifiedVolvo service technician if you intend to drive in countries where it may be difficultto obtain the correct fuel.
• Consider your destination. If you will bedriving through an area where snow or iceare likely to occur, consider snow tires.
Cold weather precautionsIf you wish to check your vehicle before the approach of cold weather, the followingadvice is worth noting:
• Make sure that the engine coolant con- tains 50 percent antifreeze. Any othermixture will reduce freeze protection. Thisgives protection against freezing down to–31 °F (–35 °C). The use of "recycled"antifreeze is not approved by Volvo. Dif-ferent types of antifreeze must not bemixed.
• Volvo recommends using only genuineVolvo antifreeze in your vehicle's radiator.
• Try to keep the fuel tank well filled – thishelps prevent the formation of condensa-tion in the tank. In addition, in extremelycold weather conditions it is worthwhileto add fuel line de-icer before refueling.
• The viscosity of the engine oil is impor-tant. Oil with low viscosity (thinner oil)improves cold-weather starting as well asdecreasing fuel consumption while theengine is warming up. Full synthetic0W-30 oil is recommended for driving inareas with sustained low temperatures. •
The load placed on the battery is greaterduring the winter since the windshieldwipers, lighting, etc., are used moreoften. Moreover, the capacity of the bat-tery decreases as the temperature drops.In very cold weather, a poorly chargedbattery can freeze and be damaged. It istherefore advisable to check the state ofcharge more frequently and spray an anti-rust oil on the battery posts.
• Volvo recommends the use of snow tireson all four wheels for winter driving, seepage 307.
• To prevent the washer fluid reservoir fromfreezing, add washer solvents containingantifreeze. This is important since dirt isoften splashed on the windshield duringwinter driving, requiring the frequent useof the washers and wipers. Volvo WasherSolvent should be diluted as follows:Down to 14 °F (–10 °C): 1 part washersolvent and 4 parts water Down to 5 °F(–15 °C): 1 part washer solvent and3 parts water Down to 0 °F (–18 °C):1 part washer solvent and 2 parts waterDown to –18 °F (–28 °C): 1 part washersolvent and 1 part water.
• Use Volvo Teflon Lock Spray in the locks.
• Avoid using de-icing sprays as they cancause damage to the locks.