How much gasoline does a Chevrolet Avalanche z71 need for 100 miles in medium?

The fuel economy of a Chevrolet Avalanche Z71 depends on several factors including the year of manufacture, engine size, driving conditions (city vs. highway), and even tire pressure. There's no single answer.

To get an estimate for gasoline needed for 100 miles, you should:

1. Find the EPA estimated fuel economy: Look up the specific year and engine size of your Avalanche Z71 (e.g., 2007 Avalanche Z71 with 5.3L V8). The EPA provides combined city/highway MPG ratings. You can find this information on the EPA's website (fueleconomy.gov) or sites like Edmunds.com.

2. Calculate the gallons needed: Once you have the MPG (miles per gallon), divide 100 miles by the MPG. This will give you an approximation of the gallons needed for 100 miles of medium driving. Keep in mind "medium" driving is subjective and could be closer to city or highway driving depending on your route.

Example: If your Avalanche gets 15 MPG combined, then 100 miles / 15 MPG ≈ 6.7 gallons.

Because real-world fuel economy often varies from EPA estimates, it's best to consider this a *rough estimate*. Your actual fuel consumption may be higher or lower.