2012 Seat Mii fuel consumption

177
At the filling station
Fuel
Introduction
You will find a factory-fitted sticker containing information on the type of
fuel for your vehicle on the inside of the fuel tank flap.
Additional information and warnings:
● ⇒ Booklet Maintenance Programme
● Refuelling ⇒ page 171
● Electronic power control and exhaust gases purification system
⇒ page 236
WARNING
Refuelling or handling fuel carelessly can cause an explosion or fire re-
sulting in serious burns and injuries.
● Fuel is a highly explosive, easily flammable substance.
● Observe current safety instructions and local regulations concerning
the handling of fuel.

Types of fuel
The type of fuel to use when refilling will depend on the vehicle's engine.
You will find a factory-fitted sticker containing information on the type of
fuel for your vehicle on the inside of the fuel tank flap.
SEAT recommends the use of sulphur-free or low sulphur fuel to reduce con-
sumption and prevent engine damage.
Possible types of fuelAlternative namesFurther information
91a)
RONNormal petrol, normal unlea-
ded petrol
⇒ page 17795 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 using 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 number than the one recommended for your engine. Howev-
er, this has no advantage in terms of fuel consumption and engine power.
SEAT recommends refuelling with a low sulphur content or sulphur-free fuel
to reduce fuel consumption for petrol engines.
Petrol additives
The quality of the fuel influences running behaviour, performance and serv-
ice life of the engine. Therefore, it is recommended to refuel with good qual-
ity petrol containing the corresponding petrol additives. These additives will
help to prevent corrosion, keep the fuel system clean and prevent deposits
from building up in the engine.
If good quality petrol with additives are not available or engine problems
arise, the necessary additives must be added when refuelling ⇒ 
.
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178At the filling station
Not all petrol additives have been shown to be effective. The use of unsuita-
ble petrol additives could seriously damage the engine and the catalytic
converter. Petrol additives with metal additives must never be used.
Available petrol additives for improvements in Anti-detonation ratings or oc-
tane ratings may contain metal additives ⇒ 
.
SEAT recommends “Genuine SEAT Additives for petrol engines”. These addi-
tives are available from Specialised workshops, who will inform you of their
application.
CAUTION
● Only use fuel with an octane rating that is in line with the norm EN 228,
otherwise significant damage could be caused to the engine and fuel sys-
tem. 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 en-
gine and the catalytic converter.
● If, in exceptional circumstances, petrol with a lower octane rating to that
recommended is used, only use moderate engine speeds and a light throt-
tle. Avoid using full throttle and overloading the engine. Otherwise engine
damage may occur. Fill up with fuel of a suitable octane rating as soon as
possible.
● Do not refuel if the filler indicates that the fuel contains metal. LRP (lead
replacement petrol) fuels also contain high concentrations of metal addi-
tives. This could damage the engine!
● Just filling one full tank of leaded fuel or with other metal additives
would seriously impair the efficiency of the catalytic converter 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 vehicles with a natural gas engine, liquefied natural
gas cannot be directly refilled, given that 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 proportion of nitrogen and carbon di-
oxide can fluctuate within the quality groups. Therefore, vehicle consump-
tion can also vary when using one type of gas only.
The engine management automatically adapts to the natural gas used ac-
cording to its quality. Therefore, different quality gases can be mixed in the
tank, without the need for comprehensive draining before applying a differ-
ent 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 continue driving!
● You should obtain professional assistance. Have the fault repaired. 

215
Vehicle care and maintenance
Checking tyre pressures
Check tyre pressures only when the vehicle has not been driven for more
than a few kilometres at low speeds in the past three hours.
● Check tyre pressures regularly, and only when the tyres are cold. Always
check all tyres, including the spare wheel. Check tyre pressures more often
in colder regions, and only when the vehicle has not been driven recently.
Always use a correctly-operating tyre gauge.
● Adjust tyre pressures to the loads carried in the vehicle.
● After adjusting the tyre pressure, check that the caps are properly
screwed.
The spare wheel or temporary spare wheel must be at the maximum pres-
sure specified.
WARNING
If tyre pressures are too high or too low, the tyre may deflate or burst
suddenly while driving. This could result in serious accident.
● If the tyre pressure is too low, the tyres could overheat, resulting in
tread detachment or even burst tyres.
● When driving at high speeds and/or fully loaded, the tyre could sud-
denly overheat, burst or be subject to tread detachment, with the resul-
tant loss of control of the vehicle.
● Tyre pressures which are too high or too low reduce the service life of
the tyre, affecting the vehicle's performance.
● Tyre pressures should be checked regularly, at least once a month
and before long journeys.
● Adjust the pressures of all the tyres to the vehicle load.
● Never deflate excess pressure from hot tyres.
CAUTION
● Take care not to tilt the manometer when placing it on the valve. Other-
wise, the valve may be damaged.
● To avoid damage to the valves, always replace valve caps correctly.
Check that the caps are identical to the standard caps and have been cor-
rectly tightened.
For the sake of the environment
Under-inflated tyres will increase the fuel consumption. 
Tread depth and wear indicators
Fig. 122 Tyre tread:
tread wear indicators
Tread depth
Certain driving conditions require a deeper tread, as well as needing the
tread to be approximately the same on the front and rear tyres. This is par-
ticularly important when driving in winter, in cold temperatures and on wet
roads ⇒ 
. 
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236Vehicle care and maintenance
Engine management and exhaust gas
purification system
Introduction
Additional information and warnings:
● Changing gear ⇒  page 124
● Refuelling ⇒  page 171
● Fuel ⇒ page 177
● Engine oil ⇒ page 185
● Vehicle battery ⇒ page 193
● Information stored in the control units ⇒ page 222
● Tow-starting and towing away ⇒ page 276
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 ex-
haust pipes, catalytic converter or the heat shields on the exhaust sys-
tem.
 Control lamps
lights
upPossible causeSolution
Fault in engine management
(Electronic Power Control).Take the vehicle to a Specialised
workshop as soon as possible
and have the engine checked.
Fault in catalytic converter.
You should reduce speed accord-
ingly. Drive carefully until you
reach the next Specialised work-
shop. Have the engine checked
there.
flashesPossible causeSolution

Combustion fault which could
damage the catalytic convert-
er.You should reduce speed accord-
ingly. Drive carefully until you
reach the next Specialised work-
shop. Have the engine checked
there.
Several warning and control lamps light up for a few seconds when the igni-
tion is switched on while a test of the function is being carried out. They will
switch off after a few seconds.
CAUTION
Always pay attention to any lit lamps and to the corresponding descriptions
and instructions 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. 

239
Practical information
ProblemPossible causes,
among othersPossible solution
The electrical
equipment is not
working.Vehicle battery flat.Charge the battery
⇒ page 193.
Fuel tank level insuffi-
cient.Refuel ⇒ page 171.
A fuse is blown.Check fuse and change if
necessary ⇒ page 261.
Fuel consumption
higher than nor-
mal.
– Short trips.
– “Irregularities in the
accelerator pedal”.– Avoid short trips.
– Foresight when driving.
– Press the accelerator even-
ly.
Electrical equipment
connected.Switch off any unnecessary
electrical equipment.
Fault in engine man-
agement.Have the fault rectified
⇒ page 236.
Tyre pressure too low.Adjust tyre pressure
⇒ page 210.
Driving on hills.No direct solution.Driving with a heavy
load.No direct solution.
Driving at an excessive
engine speed.Shift up a gear.
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282Description of specifications
● Passengers.
● Total equipment.
● Roof load, included in the carrier.
WARNING
Exceeding the maximum authorised weight and the load on the axles
could cause damage to the vehicle, accidents and serious injuries.
● The real load on the axles should never exceed the maximum permit-
ted.
● The load and its distribution in the vehicle have effects on the vehicle
handling and the braking ability. Always drive at a suitable speed.
CAUTION
Distribute the load as uniformly and as low down on the vehicle as possible.
When transporting heavy objects in the luggage compartment, these
should be placed as far forward as possible or over the rear axle to have as
little influence on handling as possible. 
Information on fuel consumption
The consumption and emission values indicated do not refer to one specific
vehicle. They are only to be used to compare the values of the different ve-
hicle versions. The fuel consumption and CO 2 emissions of a vehicle not on-
ly depend on the effective use of fuel. They also depend on your driving
style and other non-technical factors.
Calculation of fuel consumption
Fuel consumption and emission values are determined according to the cur-
rent version of the 715/2007/EC or 80/1268/EEC regulation and are valid
for the vehicle kerb weight. The specifications do not refer to an individualvehicle. To measure the fuel consumption, two measuring cycles are carried
out on a rolling road test bed. The test criteria are as follows:
Urban cycleMeasurement of the urban cycle starts with an engine cold
start. City driving is then simulated at between 0 and 50 km/
h (0 and 31 mph).
Road cycle
In the road cycle simulation, the vehicle undergoes frequent
acceleration and braking in all gears, as in normal everyday
driving. The road speed ranges from 0 to 120 km/h (0 and
75 mph).
CombinedThe average combined consumption is calculated with a
weighting of around 37 % for the urban cycle and 63 % for
the road cycle.
CO
2 emis-
sions of the
combinationThe exhaust gases are collected during both driving cycles
to calculate carbon dioxide emissions (urban and road). The
gas composition is then analysed to evaluate the CO 2 con-
tent and other emissions.
Note
The kerb weight may vary according to the vehicle equipment. This could
raise consumption and the CO 2 emissions slightly.
Note
In practice, consumption values could be different to the values calculated
based on the 715/2007/EC or 80/1268/EEC regulations. 

283
Description of specifications
Engine specifications
Petrol engine 1.0 44 kW (60 PS)
Engine specifications Power output in kW (PS) rpm 44 (60)/ 5000-6000
Maximum torque in Nm at rpm 95/ 3000-4300
No. of cylinders/capacity in cm3
3/ 999
Fuel 95 super RON a)
a)
Research Octane Number = Anti-detonation rating of the petrol.
Performance Maximum speed in km/h (mph) 160
Acceleration from 0-80 km/h (0-50 mph) in sec. 9,1
Acceleration from 0-100 km/h (0-60 mph) in sec. 14,4
Consumption (l/100 km) / CO
2 emissions (g/km)
Urban cycle 5,6/130
Extra-urban cycle 3,9/91
Combined 4,5/105
Weights
Gross vehicle weight in kg 1290
Weight in running order (with driver) in kg 929
Gross front axle weight in kg 551
Gross rear axle weight in kg 378
Permitted roof load in kg 50

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284Description of specifications
Petrol engine 1.0 44 kW (60 PS) Ecomotive
Engine specifications
Power output in kW (PS) rpm 44 (60)/5000
Maximum torque in Nm at rpm 92/3000
No. of cylinders/capacity in cm3
3/999
Fuel 95 super RON a)
a)
Research Octane Number = Anti-detonation rating of the petrol.
Performance Maximum speed in km/h (mph) 161
Acceleration from 0-80 km/h (0-50 mph) in sec. 9,1
Acceleration from 0-100 km/h (0-60 mph) in sec. 14,4
Consumption (l/100 km) / CO
2 emissions (g/km)
Urban cycle 5 / 116
Extra-urban cycle 3,6 / 84
Combined 4,1 / 96
Weights
Gross vehicle weight in kg 1290
Weight in running order (with driver) in kg 940
Gross front axle weight in kg 561
Gross rear axle weight in kg 379
Permitted roof load in kg 50
