* Specific vehicle: The engine is used in many different Chevy models (trucks, SUVs, cars) over many years, each with varying weights, aerodynamics, and transmissions. A heavier SUV will get significantly worse gas mileage than a lighter car with the same engine.
* Year: Engine technology and emissions regulations changed over the years the Vortex engine was produced. Older models generally get worse gas mileage than newer ones.
* Driving habits: Aggressive driving, frequent acceleration, and idling significantly reduce fuel economy.
* Maintenance: Proper maintenance (like regular tune-ups) can impact fuel efficiency.
* Conditions: Terrain, weather (cold weather reduces efficiency), and even tire pressure affect gas mileage.
To find the gas mileage for *your* specific Chevy V6 Vortex vehicle, check:
* Your owner's manual: This will give you EPA estimated fuel economy.
* The EPA's fueleconomy.gov website: You can search for your specific year, make, and model to find the EPA estimates.
Without knowing the specific vehicle, it's impossible to give you a precise answer.
