fuel consumption VOLKSWAGEN CC 2011 User Guide

outside temperature. It may be helpful to ventilate the vehicle before
driving and then to drive a short distance with the windows open. Af-
ter that, switch on the air conditioner with the windows closed. Keep
the windows closed when driving at high speeds. Open windows in-
crease fuel consumption.
Switch off seat heating once it has served its purpose.
Switch off the rear window defroster as soon as the windows are
free of fog and ice.
Additional factors that increase fuel consumption (examples):
Malfunctioning engine control.
Driving in the mountains.
Towing a trailer.
NOTICE
Never let the vehicle coast or roll down a hill in Neutral (N), es-
pecially when the engine is not running. The transmission will
not be lubricated and will be damaged.
Fuel-efficient driving

Fig. 147 Fuel consumption in mpg at 2 different outside air tempera-
tures.

Fig. 148 Fuel consumption in l/100 km at 2 different outside air tem-
peratures.

Adjust the tire pressure
The proper tire pressure helps reduce rolling resistance as well as
fuel consumption.
When purchasing new tires, always make sure that the tires are opti-
mized for lower rolling resistance.
Use low viscosity engine oil
Fully “synthetic,” low viscosity engine oils that expressly comply with
Volkswagen oil quality standards reduce fuel consumption. Low vis-
cosity engine oils reduce the frictional resistance on the engine and
are distributed more evenly and quickly, particularly when cold-
starting the engine. The effect is particularly apparent in vehicles that
frequently travel short distances.
Always ensure the right engine oil level is maintained and keep to the
scheduled service intervals (engine oil changes).
Make sure the engine oil that you purchase expressly complies with
Volkswagen oil quality standards and is the oil approved by
Volkswagen for your vehicle.
Avoid unnecessary weight
The lighter the vehicle, the more economical and eco-friendly it will
be. For example, an extra 220 lbs (100 kg) of weight increases fuel
consumption by up to 1 pint per 60 miles (0.3 l/100 km).
Remove all unnecessary items and unnecessary dead weight from
the vehicle.
Remove unnecessary aftermarket components
The more aerodynamic the vehicle, the less fuel it will consume. Af-
termarket components such as bicycle racks reduce its aerodynamic
performance.
Therefore, remove unnecessary structures and unused rack systems,
particularly if planning to drive at higher speeds.

As long as the indicator lights B or %0# are on, expect engine mal-
functions, increased fuel consumption, and loss of engine efficiency.
Catalytic converter

Description Possible causes,
among others Possible remedy
Electrical con-
sumers do not
work.
Vehicle battery
charge too low. Charge vehicle battery
Remaining fuel level
too low. Refuel
Fuse blown. Check fuse and replace if
necessary
Fuel consumption
higher than indi-
cated.
– Short hauls.
– “Jumpy” accelera-
tor pedal.
– Avoid short distance
driving.
– Drive defensively.
– Accelerate smoothly.
Electrical loads
switched on.
Switch off unnecessary
loads.
Engine control
malfunction.
Have the malfunction cor-
rected
Tire pressure too
low. Adjust tire pressure
Driving in the
mountains.
No direct corrective action
possible.
Towing a trailer or
driving with a roof
rack.
– Check use.
– Remove if not in use.
Driving with heavy
payload.
No direct corrective action
possible.
Driving at high en-
gine speed. Select a higher gear.