Page 2 of 24

INTRODUCTION ....................................................................................... 3
FUNCTIONAL DIAGRAM OF THE SYSTEM....................................... 6
BOTTLES ....................................................................................................... 7
SOLENOID VALVE/SAFETY DEVICES ................................................... 8
PIPES ............................................................................................................... 9
PRESSURE REDUCER/REGULATOR ...................................................... 9
NATURAL GAS INJECTORS .................................................................... 9
NATURAL GAS ELECTRONIC CONTROL UNIT ............................ 9
NATURAL GAS/PETROL SWITCH ........................................................ 10
NATURAL GAS AMOUNT INDICATOR.............................................. 11
FUEL CUT-OFF SWITCH ......................................................................... 12
ENGINE STARTING ................................................................................... 12
TO THE FILLING STATION .................................................................... 13
IF A TYRE IS PUNCTURED....................................................................... 14
BOTTLE IDENTIFICATION DATA ........................................................ 15
BOTTLE INSPECTION .............................................................................. 15
SERVICE SCHEDULE................................................................................... 16
BODYWORK VERSION CODES ............................................................ 17
ENGINE ......................................................................................................... 17
FUEL FEED/IGNITION ............................................................................... 18
IGNITION ..................................................................................................... 18
COOLING SYSTEM .................................................................................... 18
PERFORMANCE........................................................................................... 18
WEIGHTS....................................................................................................... 19
DIMENSIONS ............................................................................................... 20
FUELLING AND FILLING ......................................................................... 21
FUEL CONSUMPTION .............................................................................. 22
CO
2 EMISSIONS.......................................................................................... 23
FUSES .............................................................................................................. 23
This enclosure deals with the Fiat
Multipla petrol-natural gas version.
Refer to the Fiat Multipla Owner
Handbook for any subject not covered
by this supplement.
603.83.424 Multipla NatPow gb 5-10-2007 15:27 Pagina 2
Page 3 of 24

3
INTRODUCTION
The Fiat Multipla “Natural power” version features
two fuel feed systems: one for petrol, one for natural
gas.
The two systems are independent from each other;
the natural gas system is of the sequential, timed
Multipoint type.
One single starting system, that is the petrol one, is
available.
What is natural gas?
Natural gas is a mixture of gas used as a primary
power source.
Methane is the main component of natural gas; for this
reason, natural gas is usually reffered to as “methane”
in Italy, even though it contains other hydrocarbons
and inert gases in small amounts.
Natural gas is extracted in a gaseous state and carried
to the place of utilization through gas pipelines;
supplies are abundant and well distributed worldwide.
Methane is a fuel that has a low impact on the
environment as, it significantly reduces the
contribution of exhaust fumes to the greenhouse
effect and pollution.Natural gas Multipoint injection system
This is an original product of the research work
carried out by Fiat in the field of alternative fuel,
realized in close co-operation with qualified suppliers
in the natural gas field.
By matching the natural gas features with highly
sophisticated techniques for electronic petrol engine
control, significant results have been obtained as far as
driveability, exhaust emissions and consumption are
concerned.
The natural gas Multipoint injection system ensures
the same engine driveability features as with petrol
fuelling.
In any case, it should be reminded that, under any
driving condition, the engine power and torque
features are, during natural gas fuelling, reduced by
approximately 10% compared with petrol fuelling.
603.83.424 Multipla NatPow gb 5-10-2007 15:27 Pagina 3
Page 22 of 24

22
FUEL CONSUMPTION
The consumption values shown below refer only to
the vehicles used for carrying persons.
The fuel consumption values, illustrated in the table,
have been determined in accordance with the
homologation tests prescribed by the relevant
European Directives.
Consumption values are defined by means of the
following procedures:
❐ urban cycle: it involves a cold start followed by a
simulated drive in the city street traffic;
❐ extra-urban cycle: it involves simulating a drive
outside a city with frequent accelerations in all the
gears; speed ranges from 0 to 120 kph;
❐ average combined: it is determined by considering a
weighed covered distance of approximately 37%
urban cycle and approximately 63% extra-urban
cycle.
IMPORTANT! The different types of route, traffic
conditions, weather conditions, driving style, general
conditions of the vehicle, body
versions/outfits/accessories, utilization of the air
conditioner, vehicle loaded conditions, roof-racks and
any other condition that may affect the vehicle’s drag
or rolling resistance will result in fuel consumption
values other than the detected ones.
Consumption according to the EC Directive 1999/100/CE
Natural gas Petrol Fuel distance
(m3x 100km) (litres x 100km) natural gas fuelling
Urban 11.5 11.9 323
Extra-urban 7.6 7.5 504
Average combined 9 9.1 419
603.83.424 Multipla NatPow gb 5-10-2007 15:27 Pagina 22