2015 Seat Mii fuel consumption

The essentials
Multifunction display (MFI) The multifunction display (MFI) has two auto-
matic
memorie
s: 1 - Partial memory and 2 -
Total memory . The selected memory will be
shown in the lower right-hand corner of the
display.
With the ignition switched on, and memory 1 or
2 displayed, briefly press OK to change from
one memory to another.
1
Trip memo-
ry (for a
single jour-
ney).
The memory stores the values for the
journey and the consumption from
the moment the ignition is switched
on until it is switched off again.
If the journey is broken for more than
2 hours, the memory is automatically
erased. If the journey is continued in
less than 2 hours after the ignition is
switched off, the new data is added to
the data already stored in the memo-
ry.
2Total mem-
ory (for all
journeys).
The memory stores the values of any
number of journeys, until it counts a
total of 19 hours and 59 minutes of
driving, or 1999.9 km or miles of driv-
ing, depending on the type of instru-
ment panel fitted. On reaching either
of these limits, the memory is auto-
matically erased and starts to count
from 0 again. Possible displays
MenuFunction
TimeCurrent time in hours (h) and minutes
(min).
Journey du-
rationThis indicates the hours (h) and mi-
nutes (min) since the ignition was
switched on.
Current
fuel con-
sumptionThe current fuel consumption display
operates throughout the journey, in
l/100 km; with the engine running
and the vehicle stopped, in l/hour.
Average
fuel con-
sumptionAfter turning on the ignition, average
fuel consumption in litres/100 km will
be displayed after travelling about
100 metres. Otherwise horizontal
lines are displayed. The value shown
is updated approximately every 5 sec-
onds.
Operating rangeApproximate distance in km that can
still be travelled with the fuel remain-
ing in the tank, assuming the same
style of driving is maintained. This is
calculated using the current fuel con-
sumption.
Distance coveredDistance travelled, after ignition is
switched on, in km.
Average
speedThe average speed will be shown after
a distance of about 100 metres has
been travelled. Otherwise horizontal
lines are displayed. The value shown
is updated approximately every 5 sec-
onds.
MenuFunction
Digital
display of
speedCurrent speed displayed digitally.
Liquid coolant
temperature
digital
displayDigital display of the current tempera-
ture of the engine liquid coolant.
Warning at
--- km/hIf the stored speed is exceeded (be-
tween 30 - 250 km/h, or 18 -
155 mph), an audible warning is giv-
en together with a visual warning. Changing between display modes
● Press the rocker switch in the windscreen
w iper l
ev

er.
Storing a speed for the speed warning
● Select the display Speed warning at
--- km/h .
● Pre

ss OK on the windscreen wiper lever to
s t
or

e the current speed and switch off the
warning.
● In addition, set the required speed by
pres
sing the rocker switch on the windscreen
wiper lever or  or
 buttons on the multi-
f u
nction s

teering wheel for 5 seconds. Next,
press OK again or wait a few seconds. The
s peed i
s

stored and the warning activated.
● To switch off , pres
s OK . The stored speed is
del et
ed. 24

Driving
Automatic gearbox malfunction Back-up programme
When autom
atic
gearbox warning and indica-
tion lamps light up on the instrument panel,
there may be a system malfunction
››› page 137. In the event of some faults the
automatic gearbox functions using a backup
programme. When the programme is activa-
ted, it is possible to drive the vehicle, howev-
er, at low speeds and within a selected range
of gears.
With the manual gearbox, in some cases it is
not possible to drive with all the gears .
In all cases the automatic gearbox must be
checked at a specialised workshop.
Automatic gearbox overheating
The automatic gearbox can overheat with a
prolonged start up, or when stopping and
starting continuously. This overheating is dis-
played with a warning lamp  in the instru-
ment panel. Additionally, an audible warning
can be heard. Stop and let the gearbox cool
››› .
The v
ehic

le moves forward or back despite
having selected a gear range
When the vehicle does not move in the re-
quired direction, the system may not have
the gear range correctly engaged. Press the
brake pedal and engage the gear range again. If the vehicle still does not move in the
required dir

ection, there is a system malfunc-
tion. Seek specialist assistance and have the
system checked. CAUTION
● When the ge arbo

x is displayed as overheat-
ing for the first time, the vehicle must be
parked safely or must be driven at a speed of
more than 20 km/h (12 mph).
● When the warning lamp lights up and the
audible w
arning is heard, the vehicle must be
parked safely and the engine switched off.
Let the gearbox cool down.
● To prevent damage to the gearbox, driving
must
only be continued when the warning
lamps are no longer lit up. While the gearbox
is overheated, starting up and driving, even
at a slow speed should be avoided. Recommended gear display
In some vehicles, the recommended gear for
r
educ
in

g fuel consumption is displayed on
the instrument panel:
DisplayMeaning 
Optimum gear.

Recommendation to change up a gear.

Recommendation to change down a
gear. WARNING
The recommended gear display is intended as
a guideline only; it shou

ld never replace the
driver's attention to driving carefully.
● Responsibility for selecting the correct gear
for eac
h situation continues to lie with the
driver, for example when overtaking or climb-
ing a hill. For the sake of the environment
Selecting the most appropriate gear for the
sit uation w

ill help you to save fuel. Note
● The rec ommended g

ear display is switched
off when the clutch pedal is pressed.
● On the display of the Portable Navigation
Sys
tem (supplied by SEAT) ››› page 164 the
recommended gear can also be seen. Run-in and economical driving
R u
nnin

g in Please observe the instructions for running-in
new c
omponents.
R u

nning-in the engine
The engine needs to be run in over the first
1,500 km. During its first few hours of »
141
Technical data
Advice
Operation
Emergencies
Safety

Driving
Economical and environmentally
friendly driv
in
gFig. 147
Fuel consumption in litres per
100 km at 2 diff
er

ent outside temperatures Fuel consumption, environmental impact and
en
gine, br
ak

e and tyre wear depend largely
on three factors:
● Personal driving style.
● Conditions of use (weather, road surface).
● Technical requirements.
Saving
s of up to 25% in fuel consumption
are possible with an appropriate driving style
and the adoption of certain simple tips.
Changing gear early
General instructions: The highest gear is al-
ways the most economical. As a guide, for
most vehicles at a speed of 30 km/h
(19 mph), drive in third gear, at 40 km/h (25 mph) in fourth gear and at 50 km/h
(31 mph) in fifth ge

ar.
In addition, “skipping” gears when shifting
up helps to save fuel, weather and traffic
conditions permitting.
Do not wait until the last moment before
changing gear. Only use first gear when you
move off and change to second gear quickly.
Avoid the kick-down function in vehicles with
automatic gearbox.
Vehicles with a gear display help to achieve
an economical driving style as the display in-
dicates the best moment to change gear.
Let the vehicle roll
If you take your foot off the accelerator, the
fuel supply is stopped and consumption is
reduced.
Allow the vehicle to roll without accelerating,
for example when approaching a red traffic
light. However, if the vehicle is rolling too
slowly or the distance is too long, the clutch
pedal should be pressed to declutch. The en-
gine will then operate at idle speed.
If the vehicle is going to be at a standstill for
a period of time, switch off the engine; for ex-
ample, while waiting at a level crossing.
Think ahead and “flow” with the traffic
Frequent acceleration and braking considera-
bly increase fuel consumption. If you think ahead as you drive and keep a safe distance
from the v
ehicle in front, it is possible to slow
down by simply lifting your foot off the accel-
erator. This eliminates the need for constant
braking and acceleration.
Calm and steady driving
Constancy is more important than speed: The
more you drive at a constant speed, the lower
the fuel consumption.
When driving on the motorway, it is more effi-
cient to drive at a constant and more moder-
ate speed than to be continuously accelerat-
ing and braking. As a general rule, you will
reach your destination just as quickly when
you drive at a constant speed.
The cruise control function helps you to ach-
ieve a constant style of driving.
Moderate use of additional devices
It is important to travel in comfort, but con-
venience systems should be used ecological-
ly.
Some equipment, when connected, increase
fuel consumption considerably, for example:
● Air conditioning cooling system: If the air
conditioning sy
stem is required to cool to
significantly lower temperatures than the true
outside temperature, it will require a large
amount of energy from the engine. Therefore,
we recommend that the selected temperature »
143
Technical data
Advice
Operation
Emergencies
Safety

Operation
for the vehicle is not too different to the out-
s ide t
emper
ature. It is a good idea to air the
vehicle before starting your journey and to
drive a short distance with the windows
open. Then you can close the windows and
switch on the air conditioning. Keep windows
closed when travelling at high speeds. Driv-
ing with the windows open increases fuel
consumption.
● Switch off the seat heating when the seats
have w
armed up.
● Switch off the heated rear window when it
is not
moist or covered in ice.
Avoid short journeys
Fuel consumption is much higher when the
engine is cold, immediately after it has been
started. It takes a few kilometres of driving
for the engine to warm up and to normalise
consumption.
The engine and catalytic converter need to
reach their proper working temperature in or-
der to minimise fuel consumption and emis-
sions. The ambient temperature has a deci-
sive influence.
Fig. 147 shows the difference in consump-
tion for the same journey at +20 °C (+68 °F)
and at -10 °C (+14 °F).
Therefore, unnecessary short journeys
should be avoided. Try to combine trips. The vehicle uses more fuel in winter than in
summer, ev

en when other conditions are the
same.
The engine takes a long time to warm up
when it is idling. In addition, mechanical
wear and pollutant emissions are also espe-
cially high during this initial warm-up phase.
It is therefore best to drive off immediately af-
ter starting the engine. Doing this avoids run-
ning the engine at a high speed.
Adjusting type pressures.
Having the correct pressure in your tyres
helps to reduce rolling resistance and, as a
result reduces fuel consumption. Increasing
the tyre pressure slightly (+0.2
bar/+3 psi/+200 kPa) can help to save fuel.
When you buy new tyres, make sure they are
optimised for minimum rolling resistance.
Use low friction engine oil
The use of low viscosity totally synthetic oils,
known as low friction engine oil, helps to re-
duce fuel consumption. These oils reduce the
resistance caused by friction in the engine,
they flow around the engine more quickly
and efficiently, particularly in cold starts. The
effect is particularly noticeable in vehicles
frequently used for short journeys.
Always check the engine oil level and ob-
serve service intervals (engine oil change in-
tervals). When purchasing engine oil, always observe
leg
al requirements and ensure that the oil is
approved by SEAT.
Avoid carrying unnecessary loads
The lighter the vehicle, the more economical
and ecological the driving style. For example,
an additional weight of 100 kg will increase
fuel consumption up to 0.3 l/100 km.
Remove any unnecessary objects or loads
from the vehicle.
Remove optional equipment and unnecessa-
ry accessories
The more aerodynamic the vehicle, the lower
the fuel consumption. Optional equipment
and accessories (such as roof racks or bike
carriers) reduce the aerodynamic benefits of
the vehicle.
Therefore, we recommend you remove all op-
tional and unnecessary equipment and racks,
especially if you intend to drive at high
speeds.
Other factors which increase fuel consump-
tion (examples):
● Fault in engine management.
● Driving on hills.
144

Driving
WARNING
Always adapt your speed and the distance to
the v ehic
les ahead in line with visibility,
weather conditions, the condition of the road
and the traffic situation. Engine management and ex-
hau
s

t gas purification system
Introduction WARNING
The components of the exhaust system reach
ver y

high temperatures. This could cause a
fire.
● Always park your vehicle so that no part of
the exhau
st system can come in contact with
flammable materials (such as dried grass).
● Never apply additional underseal or anti-
corro
sion coatings to the exhaust pipes, cata-
lytic converter or the heat shields on the ex-
haust system. Control and warning lamps

It lights up
Fault in engine
management
(Electronic Pow-
er Control).Take the vehicle to a specialised
workshop as soon as possible and
have the engine checked.

It lights up
Fault in catalytic
converter.You should reduce speed according-
ly. Drive carefully until you reach the
next specialised workshop. Have
the engine checked there.

Flashes
Combustion
fault which could
damage the cat-
alytic converter.You should reduce speed according-
ly. Drive carefully until you reach the
next specialised workshop. Have
the engine checked there.
Several warning and indication lamps light
up f
or a f
ew sec

onds when the ignition is
switched on, signalling that the function is
being verified. They will switch off after a few
seconds. CAUTION
Always pay attention to any lit control lamps
and to the c orr

esponding descriptions and in-
structions to avoid damage to the vehicle. Note
While the control lamps  or  r
emain lit,
the engine will have faults, there will be high-
er consumption of fuel and a loss of engine
power. Catalytic converter
The catalytic converter permits the subse-
quent tr
e

atment of the exhaust gases thus
reducing contaminating gas emissions. To
ensure a longer working life for the exhaust
system and catalytic converter in a petrol en-
gine:
● Always use unleaded petrol.
● Never run the fuel tank completely dry.
● Do not top up with too much engine oil
›› ›

page 186.
● Do not tow-start the vehicle; use the starter
cabl
es ›››
 page 42.
If you should notice misfiring, uneven run-
ning or loss of power when the car is moving,
reduce speed immediately. Have the car in-
spected by a specialised workshop. If this
happens, unburnt fuel can enter the exhaust
system and escape into the atmosphere. The
catalytic converter can also be damaged by
overheating. »
145
Technical data
Advice
Operation
Emergencies
Safety

Advice
Checking and refilling levels
F uel
Intr oduction You will find a factory-fitted sticker containing
inform
ation on the type of
fuel for your vehi-
cle on the inside of the fuel tank flap. WARNING
Refuelling or handling fuel carelessly can
cau se an e

xplosion or fire resulting in serious
burns and injuries.
● Fuel is a highly explosive, easily flammable
subs
tance.
● Observe current safety instructions and lo-
cal
regulations concerning the handling of
fuel. Types of fuel
The type of fuel to use when refilling will de-
pend on the
v
ehic

le's engine. You will find a
factory-fitted sticker containing information
on the type of fuel for your vehicle on the in-
side of the fuel tank flap.
SEAT recommends the use of sulphur-free or
low sulphur fuel to reduce consumption and
prevent engine damage.
Possible types of fuelAlternative namesFurther in-formation
91 a)
RONNormal petrol, normal
unleaded petrol
››› page 17895 a)
RONPremium unleaded
petrol (95 RON)
98 a)
RONPremium unleaded
petrol (98 RON)
a) RON = Regulation Octane Number
Petrol Petrol types
V
ehic
l

es with petrol engines must refuel us-
ing unleaded petrol according to European
norm EN 228 ››› .
P etr
o

l types are categorised according to
their octane number (e.g. 91, 95, 98 or 99
RON (RON = “Research Octane Number”).
You may use petrol with a high octane num-
ber than the one recommended for your en-
gine. However, this has no advantage in
terms of fuel consumption and engine power.
SEAT recommends refuelling with a low sul-
phur content or sulphur-free petrol to reduce
fuel consumption for petrol engines. Petrol additives
The quality of the f

uel influences the behav-
iour, power and service life of the engine.
This is why the petrol you use should carry
suitable additives already included by the
petrol industry, free of metals. These addi-
tives will help to prevent corrosion, keep the
fuel system clean and prevent deposits from
building up in the engine.
If good-quality petrol with metal-free addi-
tives is not available or engine problems
arise, the necessary additives must be added
when refuelling ››› .
Not al
l

petrol additives have been shown to
be effective. The use of unsuitable petrol ad-
ditives may cause significant damage to the
engine and the catalytic converter. Metal ad-
ditives should never be used. Metal additives
may also be contained in petrol additives for
improving anti-detonation ratings or octane
ratings ››› .
S EA
T r

ecommends “genuine Volkswagen
Group Fuel Additives for petrol engines”.
These additives can be bought at SEAT deal-
ers, where information on how to use them
can also be obtained. CAUTION
● Do not r ef

uel if the filler indicates that the
fuel contains metal. LRP (lead replacement
petrol) fuels contain high concentrations of 178

Checking and refilling levels
metal additives. Using them may damage the
engine!
● On ly
use fuel with an octane rating that is
in line with the norm EN 228, otherw
ise sig-
nificant damage could be caused to the en-
gine and fuel system. Furthermore, it could
lead to a loss of performance with the conse-
quent engine fault.
● The use of unsuitable petrol additives could
seriously
damage the engine and the catalyt-
ic converter.
● If, in exceptional circumstances, petrol with
a lower oct
ane rating to that recommended is
used, only use moderate engine speeds and a
light throttle. Avoid using full throttle and
overloading the engine. Otherwise engine
damage may occur. Fill up with fuel of a suita-
ble octane rating as soon as possible.
● Just filling one full tank of leaded fuel or
with other meta
l additives would seriously
impair the efficiency of the catalytic convert-
er and could damage it. Natural gas
Natural gas, in addition to others, can be in
li
quid f
orm.
Li

quefied natural gas (LNG) is the result of
heavy cooling of natural gas. Therefore its
volume is considerably reduced compared
with compressed natural gas (CNG). In vehi-
cles with a natural gas engine, liquefied nat-
ural gas cannot be directly refilled, as the gas would expand excessively in the vehicle gas
tank.
Theref

ore, vehicles with a natural gas engine
must only be refuelled using compressed
natural gas ››› .
Nat ur
a

l gas quality and consumption
Natural gas is divided into the groups H and
L depending on its quality.
Gas type H has a superior heating power and
inferior nitrogen and carbon dioxide content
than type L. The higher the heating power of
the natural gas, the lower the consumption
will be.
However, the heating power and the propor-
tion of nitrogen and carbon dioxide can fluc-
tuate within the quality groups. Therefore, ve-
hicle consumption can also vary when using
one type of gas only.
The engine management automatically
adapts to the natural gas used according to
its quality. Therefore, different quality gases
can be mixed in the tank, without the need
for comprehensive draining before applying a
different quality gas.
Natural gas and safety
If you can smell gas or suspect that there is a
leak ››› :
● Stop the vehicle immediately. ●
Sw it
c

h the ignition off.
● Open the doors to appropriately ventilate
the vehic
le.
● Immediately extinguish cigarettes.
● Move away from the vehicle or switch off
obj
ects that may cause sparks or a fire.
● If you continue to smell gas, do not contin-
ue driving!
● Seek

specialist assistance. Have the fault
repair
ed. WARNING
Failure to act when you can smell gas in the
vehic l

e or when refuelling can cause serious
injuries.
● Carry out the necessary operations.
● Leave the danger zone.
● If necessary, warn the emergency services. WARNING
The vehicle is not prepared to use liquefied
nat ur

al gas (LNG) and this fuel must not be
added under any circumstances. Liquefied
natural gas can cause the natural gas tank to
explode, resulting in serious injury. Note
The natural gas system must be subject to
re gu

lar inspections at a specialised work-
shop in accordance with the Maintenance
Programme. 179
Technical data
Advice
Operation
Emergencies
Safety

Technical features
Technical data
T ec
hnic
al features
Important information Introduction The information in the vehicle documentation
alwa
y

s takes precedence over the informa-
tion in this Instruction Manual.
All technical specifications provided in this
documentation are valid for the standard
model in Spain. The vehicle data card inclu-
ded in the Maintenance Programme or the
vehicle registration documents shows which
engine is installed in the vehicle.
The figures may be different depending
whether additional equipment is fitted, for
different models, for special vehicles and for
other countries. Abbreviations used in the Technical Specifi-
cation
s

section
kWKilowatt, engine power measurement.
PSPferdestärke (horsepower), formerly
used to denote engine power.
rpmRevolutions per minute - engine speed.
NmNewton metres, unit of engine torque.
litres per100 kmFuel consumption in litres per 100 km
(70 miles).
g/kmCarbon dioxide emissions in grams per
km (mile) travelled.
CO 2Carbon dioxide
CNCetane number, indication of the diesel
combustion power.
RONResearch octane number, indication of
the knock resistance of petrol. Vehicle identification data
Fig. 178
Vehicle data label. Fig. 179
Vehicle identification number. Vehicle identification number
The
v
ehic

le identification number (chassis
number) can be read from outside the vehicle
through a viewer in the windscreen
››› Fig. 179. This viewer is located in the lower »
209
Technical data
Advice
Operation
Emergencies
Safety