Cold engines, heaters, lower tyre pressure and snowy roads all push up winter fuel consumption. Practical tips for keeping it under control.
An MSG Equipment article lists the main reasons fuel consumption rises in winter:
- Time needed for the engine and fluids to reach operating temperature
- High energy demand from cabin, seat and windscreen heating
- Lower tyre pressure in the cold and higher rolling resistance
- Wheel slip on snow and slower driving
Technical causes that affect consumption year-round include retarded ignition, dirty injectors, a clogged air filter and incorrect wheel alignment. A faulty battery can overload the alternator, so the health of the charging system also matters.
Tips: a pre-winter service check and alignment, regular tyre-pressure checks, removing unnecessary weight, steady motorway speeds and using the oils and fluids recommended by the manufacturer.