2014 Seat Mii fuel consumption

Cockpit
Control functions of the instrument
panel display Fig. 26
Windscreen wiper lever: control but-
tons. Calling up options
● Switch the ignition on.
● If a message or vehicle symbol is dis-
played, press OK/RESET (
››› Fig. 26 A ).
● Press the top or bottom part of the rocker
switch ››› Fig. 26 B until the desired option
appears.
Multifunction display (MFI) The multifunction display (MFI) has two auto-
matic memories:
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 dura-
tionThis indicates the hours (h) and mi-
nutes (min) since the ignition was
switched on.
MenuFunction
Current fuel
consumptionThe 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
consumptionAfter 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 cov-
eredDistance 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.
Digital display
of speedCurrent speed displayed digitally.
Liquid coolant
temperature
digital displayDigital display of the current tempera-
ture of the engine liquid coolant.»
41
Technical specifications
Advice
Operation
Safety

Operation
required direction, there is a system malfunc-
tion. Seek specialist assistance and have the
system checked. CAUTION
● When the gearbox 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 warning 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
reducing 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 should never replace the
driver's attention to driving carefully.
● Responsibility for selecting the correct gear
for each 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
situation will help you to save fuel. Note
● The recommended gear display is switched
off when the clutch pedal is pressed.
● On the display of the Portable Navigation
System (supplied by SEAT) ››› page 123 the
recommended gear can also be seen. Run-in and economical driving
Running-in Please observe the instructions for running-in
new components.
Running-in the engine
The engine needs to be run in over the first
1,500 km. During its first few hours of run-ning, the internal friction in the engine is
greater than later on when all the moving
parts have bedded down.
How the vehicle is driven for the first 1,500
km influences the future engine perform-
ance. Throughout the life of the vehicle, it
should be driven at a moderate speed, espe-
cially when the engine is cold, as this will re-
duce engine wear and increase its useful life.
Never drive at extremely low engine speeds.
Change down to a lower gear when the en-
gine no longer runs “smoothly”.
Up to 1,000
k i

lometres the following instructions apply:
● Do not use full throttle.
● Do not force the engine above two thirds of
its maximum speed.
Between 1,000 and 1,500 kilometres, gradu-
ally increase power until reaching the maxi-
mum speed and high en
gine speeds.
Running in new tyres and brake pads
● Replacement of wheel rims and new tyres
››› page 158
● Notes on the brakes ››› page 89 For the sake of the environment
If the engine is run in gently, the life of the
engine will be increased and the engine oil
consumption reduced. 98

Driving
Environmental friendliness Environmental protection is a top priority in
the design, choice of materials and manufac-
ture of your new SEAT.
Constructive measures to encourage
recycling
● Joints and connections designed for easy
dismantling
● Modular construction to facilitate disman-
tling
● Increased use of single-grade materials.
● Plastic parts and elastomers are marked in
accordance with ISO 1043, ISO 11469 and
ISO 1629.
Choice of materials
● Use of recycled materials.
● Use of compatible plastics in the same part
if its components are not easily separated.
● Use of recycled materials and/or materials
originating from renewable sources.
● Reduction of volatile components, includ-
ing odour, in plastic materials.
● Use of CFC-free coolants.
Ban on heavy metals, with the exceptions
dictated by law (Annex II of ELV Directive
2000/53/EC): cadmium, lead, mercury, hexa-
v al
ent chromium. Manufacturing methods
●
Reduction of the quantity of thinner in the
protective wax for cavities.
● Use of plastic film as protection during ve-
hicle transport.
● Use of solvent-free adhesives.
● Use of CFC-free coolants in cooling sys-
tems.
● Recycling and energy recovery from resi-
dues (RDF).
● Improvement in the quality of waste water.
● Use of systems for the recovery of residual
heat (thermal recovery, enthalpy wheels,
etc.).
● The use of water-soluble paints. Correct economical and ecological
driving Fig. 84
Fuel consumption in litres per 100 km
at 2 different outside temperatures Fuel consumption, environmental impact and
engine, brake and tyre wear depend largely
on three factors:
●
Personal driving style.
● Conditions of use (weather, road surface).
● Technical requirements.
Savings 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 »
99
Technical specifications
Advice
Operation
Safety

Operation
(25 mph) in fourth gear and at 50 km/h
(31 mph) in fifth gear.
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 vehicle 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 system 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 for the vehicle is not too different to the out-
side temperature. 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 warmed 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 t o minimi
se fuel consumption and emis-
sions. The ambient temperature has a deci-
sive influence.
Fig. 84
shows the difference in consumption
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.
100

Driving
The vehicle uses more fuel in winter than in
summer, even when other conditions are the
same.
“Warming” the engine is not only forbidden
in some countries, but in practice it is techni-
cally superfluous as it is a waste of fuel.
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
legal 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
unnecessary 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
consumption (examples):
●
Fault in engine management.
● Driving on hills. WARNING
Always adapt your speed and the distance to
the vehicles ahead in line with visibility,
weather conditions, the condition of the road
and the traffic situation. Engine management and
exhaust gas purification
system
Introduction WARNING
The components of the exhaust system reach
very high temperatures. This could cause a
fire.
● Always park your vehicle so that no part of
the exhaust system can come in contact with
flammable materials (such as dried grass).
● Never apply additional underseal or anti-
corrosion coatings to the exhaust pipes, cata-
lytic converter or the heat shields on the ex-
haust system. Control lampsIt lights
upPossible causeSolution 
Fault in engine
management
(Electronic Power
Control).Take the vehicle to a
specialised work-
shop as soon as
possible and have
the engine checked.
»
101
Technical specifications
Advice
Operation
Safety

OperationIt lights
upPossible causeSolution 
Fault in catalytic
converter.
You should reduce
speed accordingly.
Drive carefully until
you reach the next
specialised work-
shop. Have the en-
gine checked there.
FlashesPossible causeSolution

Combustion fault
which could dam-
age the catalytic
converter.
You should reduce
speed accordingly.
Drive carefully until
you reach the next
specialised work-
shop. Have the en-
gine checked there.
Several warning and control lamps light up
for a few seconds when the ignition is switch-
ed on, signalling that the function is being
verified. They will switch off after a few sec-
onds.
CAUTION
Always pay attention to any lit control lamps
and to the corresponding descriptions and in-
structions to avoid damage to the vehicle. Note
While the control lamps  or
 maintain lit
up, the engine will present faults, a higher consumption of fuel and a loss of engine
power.
Catalytic converter
The catalytic converter permits the subse-
quent treatment 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 146 .
● Do not t

ow-start the vehicle; use the starter
cables ››› page 181.
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. For the sake of the environment
Even when the emission control system is
working perfectly, there may be a smell of
sulphur under certain conditions. This de- pends on the sulphur content of the fuel
used.
Driving abroad
In some countries, certain safety regulations
and requirements are in force relating to ex-
haust gas emissions, which differ from the
technical characteristics of the vehicle. Be-
fore travelling abroad, SEAT recommends you
consult a technical service about the legal re-
quirements and the following points:
●
Does the vehicle need technical modifica-
tions for driving abroad, for example, adjust-
ment of the headlamps?
● Does the vehicle have all the tools, diag-
nostics equipment and spare parts required
for inspections and repairs?
● Are there any SEAT dealers in the destina-
tion country?
● For petrol vehicles: Is unleaded petrol avail-
able at the right octane rating?
● For diesel engines: is diesel fuel available
with a low sulphur content?
● Are a suitable engine oil ( ››› page 146) and
other engine fluids complying with SEAT
specifications available in the destination
country?
102

Checking and refilling levels
Checking and refilling levels
Fuel Introduction You will find a factory-fitted sticker containing
information on the type of fuel for your vehi-
cle on the inside of the fuel tank flap.
WARNING
Refuelling or handling fuel carelessly can
cause an explosion or fire resulting in serious
burns and injuries.
● Fuel is a highly explosive, easily flammable
substance.
● 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 vehicle'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 13795 a)
RONPremium unleaded
petrol (95 RON)
98 a)
RONPremium unleaded
petrol (98 RON)
a) RON = Regulation Octane Number
Petrol Petrol types
Vehicles with petrol engines must refuel us-
ing unleaded petrol according to European
norm EN 228
››› .
Petrol 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 fuel 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 all 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 ››› .
SEAT recommends “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 refuel if the filler indicates that the
fuel contains metal. LRP (lead replacement
petrol) fuels contain high concentrations of » 137
Technical specifications
Advice
Operation
Safety

Advice
metal additives. Using them may damage the
engine!
● Only use fuel with an octane rating that is
in line with the norm EN 228, otherwise 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 octane 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 metal 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
liquid form.
Liquefied 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.
Therefore, vehicles with a natural gas engine
must only be refuelled using compressed
natural gas
››› .
Natural 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. ●
Switch the ignition off.
● Open the doors to appropriately ventilate
the vehicle.
● Immediately extinguish cigarettes.
● Move away from the vehicle or switch off
objects that may cause sparks or a fire.
● If you continue to smell gas, do not contin-
ue driving!
● Seek specialist assistance. Have the fault
repaired. WARNING
Failure to act when you can smell gas in the
vehicle 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
natural 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
regular inspections at a specialised work-
shop in accordance with the Maintenance
Programme. 138