| Situation | Use Recirculation? | Why? |
| Very hot summer day | YES | To cool the cabin as fast as possible. |
| Heavy traffic or tunnels | YES | To block out exhaust fumes and smog. |
| High pollen count days | YES | To keep allergens out of the car. |
| Rain or freezing weather | NO | It causes the windows to fog up quickly. |
| Long road trips | NO | Fresh air helps the driver stay alert. |
| Smelly food inside | NO | You need fresh air to flush out the odor. |
Maintenance Tip: The Cabin Air Filter
To keep your air system working perfectly, remember to check your cabin air filter. Most experts recommend changing it every 12,000 to 15,000 miles. If the filter is dirty, even the recirculation mode won’t be able to keep the air fresh.
