Volvo XC40 2019 Owner's Manual page 438

STARTING AND DRIVING
20
Petrol particle filter
Petrol cars are fitted with particle filters for
more efficient emission control.
Particles in the exhaust gases are collected in
the petrol particle filter during normal driving.
In normal driving conditions, passive regenera-
tion takes place, which leads to the particles
being oxidised and burned away. The filter is
emptied in this way.
If the car is driven at low speed or with repea-
ted cold starts in low outside temperature,
active regeneration may be necessary. Regen-
eration of the particulate filter is automatic and
normally takes 10-20 minutes. Fuel consump-
tion may temporarily increase during regenera-
tion.
When driving short distances at low
speeds in a petrol car
The capacity of the emissions system is affec-
ted by how the car is driven. Driving varying
distances and at different speeds is important
in order to achieve performance that is as
energy-efficient as possible.
Driving short distances at low speeds (or in
cold climates) frequently, where the engine
does not reach normal operating temperature,
can lead to problems that can eventually
cause a malfunction and trigger a warning
message. If the vehicle is mostly driven in city
20 Applicable to certain variants.
436
traffic, it is important to regularly drive at
higher speeds to allow the emissions system
to regenerate.
The car should be driven on A-roads at
•
speeds in excess of 70 km/h (44 mph) for
at least 20 minutes between each refuel-
ling.
Related information
Petrol (p. 435)
•
Diesel
It is important to use the correct fuel during
refuelling. Diesel is available in different quali-
ties adapted to different conditions.
Only use diesel fuel from well-known produc-
ers. Never use fuel of dubious quality. Diesel
fuel must fulfil the EN 590 or SS 155435
standard. Paraffinic diesel (HVO, XTL) accord-
ing to the EN 15940 standard can be used.
Diesel engines are sensitive to contaminants
in the fuel, such as excessively high volumes
of sulphur and metals.
At low temperatures (lower than 0 °C (32 °F))
a paraffin precipitate may form in the diesel
fuel, which may lead to starting problems. The
fuel qualities that are sold must be adapted for
season and climate zone, but for extreme
weather conditions, old fuel or moving
between climate zones, paraffin precipitate
may occur.
The risk of condensation in the fuel tank is
reduced if the tank is kept well filled.
When refuelling, check that the area around
the fuel filler pipe is clean. Avoid spilling fuel
onto the paintwork. Wash off any spillage with
detergent and water.