WHY DOES MY VEHICLE USE MORE FUEL IN COLD WEATHER?

It’s that time of year again when vehicles suddenly start using more fuel. Here are a few reasons why:

Fuel Quality:
Gas stations are required to switch to winter-grade fuel by September 15. This blend contains butane, which aids in starting vehicles in cold weather. However, a litre of winter fuel typically has 1.5% to 3% less energy than summer fuel, resulting in higher fuel consumption.

Warm-Up Period:
Colder temperatures lead to increased fuel consumption. The EPA estimates that when temperatures drop from 24°C to 7°C, fuel consumption during urban commutes can rise by 12% to 28%. This is largely due to the longer time it takes for the vehicle’s engine and lubricants to reach optimal operating temperatures.

Aerodynamic Resistance:
Cold, dry winter air is 11% denser than warm, humid summer air, which increases wind resistance. As a result, highway fuel consumption can rise by about 1.3%. Additionally, average wind speeds tend to be higher in winter, further increasing aerodynamic resistance and fuel consumption.

How to Improve Fuel Economy

1. Maintain Tire Pressure: Ensure your tire pressure is set to the manufacturer's specifications.

2. Check Alignment: Have your vehicle’s alignment regularly inspected.

3. Stay on Top of Maintenance: Follow the maintenance schedule and use the recommended engine oil grade from the manual.

4. Remove Unnecessary Accessories: Take off any unneeded accessories, like roof racks or bed racks, as they contribute to increased wind drag.