Hybrid vehicles are fun to drive, but they can work poorly when the weather gets cold, mainly because their fuel efficiency is significantly affected. Electrical systems also lose efficiency, resulting in reduced mileage.

Factors affecting performance of hybrid car in winter

Hybrid System Temperature

Hybrid system components, especially the battery, work best in warm conditions. The on-board hybrid battery depends on the chemical reaction both with the release of energy to the electric motor, and with the adoption of the charge during regenerative braking. When the battery is cold, this reaction is hindered, causing the engine to run longer and more often to account for shortages while the battery warms up.

Passenger Compartment Heat

Like their usual counterparts, hybrids depend on hot engine coolant circulating through the heater core (heat exchanger) to maintain heat in the cab. The increased need for a heater means that the engine needs to work more often in order to keep up.

Heavy Defroster Use

Starting the defroster can also reduce mileage. When the defroster is turned on, it not only transfers heat from the heater core, but also starts the AC compressor to remove moisture from the air. Although it is good if the compressor runs regularly in cold weather to maintain the integrity of the internal seals, excessive use can result in lower fuel consumption. In most hybrids, the compressor runs on its own electric motor instead of the belt from the engine, but this does not allow the compressor to work without a penalty, since additional electric discharge requires more frequent charging of the hybrid battery.

Tips to improve hybrid vehicle performance in colder months

• • It is recommended to set the heater to the lowest comfortable level.
• • Does your car have electric seats? If so, use them so that you are comfortable and cozy, without the need to heat the entire cabin.
• • Cleaning very frozen windows will not be a problem if you set the heater to defrost mode. If the cabin is warm and the windows are open, turn off this mode and do not install it again if it is not required.
• • Watch for tire pressure, as they should not be inflated enough, otherwise the car will not get enough grip on the roads.
• With black ice and slushy roadways a wintertime reality, not only is it safer to go easier on the accelerator, it is a good way to save fuel.

Follow these tips to enjoy driving your hybrid car in winter, the same way you do during the rest of the year!

-Jack Wilson

QuickSnap Auto Parts