230Driving and the environment
Other factors which increase fuel consumption (examples):
●Fault in engine management.
● Driving on hills.
● Trailer towing.
Saving fuel while driving
Fig. 157 Fuel consump-
tion in litres per 100 km
(mpg) at different outside
temperatures
By adopting an economical driving style and anticipating the traffic situa-
tion ahead, you can easily reduce fuel consumption by 10-15%.
A vehicle uses most fuel when accelerating. By anticipating the traffic situa-
tion ahead, you will brake and therefore accelerate less. Wherever possible,
let the car roll slowly to a stop, for instance when you can see that the next
traffic lights are red.
Avoid short journeys
Fuel consumption is much higher when the engine is cold, immediately af-
ter 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 tem-
perature in order to minimise fuel consumption and emissions. The ambient
temperature has a decisive influence.
Fig. 157 shows the difference in consumption for the same journey at
+20 °C (+68 °F) and at -10 °C (+14 °F).
Unnecessary short journeys should be avoided. Try to combine trips.
The vehicle uses more fuel in winter than in summer, even when other con-
ditions are the same.
“Warming” the engine is not only forbidden in some countries, but in prac-
tice it is technically 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) can help to save fuel.
If you are prepared to accept a slight reduction in comfort, the tyres may be
filled to the pressures recommended for a fully-loaded vehicle. This is also
valid when driving alone without luggage.
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, help to reduce fuel consumption. Low friction engine oils reduce the re-
sistance 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 observe service intervals (engine oil
change intervals).
When purchasing engine oil, always observe legal requirements and ensure
that the oil is approved by SEAT.
