2010 Lexus RX 450h User Guide 2 - Page 39

1-1. Hybrid system n Checking tire inflation pressure Make sure to check the tire inflation pressure frequently. Improper tire inflation pressure can cause poor fuel consumption. Also, as snow tires can cause large amounts of friction, their use on dry roads can lead to poor fuel consumption. Use a tire that is appropriate for the season. n Luggage Carrying heavy luggage can lead to poor fuel consumption. Avoid carrying unnecessary luggage. Installing a large roof rack can also cause poor fuel consumption. n Warming up before driving Since the gasoline engine starts up and cuts out automatically when cold, warming up the engine is unnecessary. Moreover, frequently driving short distances will cause the engine to repeatedly warm up, which can lead to poor fuel consumption. 40