SPECIFICATIONS
443
EU driving cycles
Official fuel consumption figures are based on
two standardised driving cycles in a laboratory
environment ("EU driving cycles") all in accord-
ance with EU Regulation no 692/2008 and
715/2007 (Euro 5 / Euro 6) and UN ECE
Regulation no 101. Since the driving cycles are
also used for quality control, there are significant
requirements for repeatability of the tests. For
this reason the tests are carried out under close
scrutiny and only with the car's basic functions
(e.g. air conditioning, radio, etc. switched off). As
a consequence of this the results from the official
figures are not obviously representative of what
the customer sees during actual usage.
The regulations cover the driving cycles for
"Urban driving" and "Extra-urban driving":
•Urban driving - the measurement starts with
cold starting the engine. The driving is simu-
lated.
•Extra-urban driving - the car is accelerated
and braked at speeds between 0-120 km/h
(0-75 mph). The driving is simulated.
Cars with manual gearbox are started in 2nd
gear.
The official value for combined driving, which is
reported in the table, is a combination of the
results from the "Urban driving" and "Extra-urban
driving" driving cycles, in accordance with legal
requirements.
The exhaust gases are collected in order to
extrapolate the carbon dioxide emissions (CO2
emissions) during the two driving cycles. These
are then analysed and give the value for CO2
emissions.
CO2 emissions and fuel consumption
(vehicle gas - CNG) - for Bi-Fuel
Methane gas
gram CO2/km
116
Biogas
gram CO2/km
38
Combined driving
kg/100 km
4.3
CNG specifications
Type designation Bi-Fuel
Output, CNG Power output is equivalent
as for petrol.
Emission level Euro 6
NOTE
•There are many different qualities of gas,
as well as gases with lower energy con-
tent and range.
•The fuel consumption specified above
applies for combined driving. During
urban driving or fast motorway driving the
consumption is higher and during calm
extra-urban driving it is lower.
Related information
•Economical driving (p. 319)
•Weights (p. 426)
