How many miles per gallon does a 2003 Chevrolet Suburban get?

The fuel economy of a 2003 Chevrolet Suburban varies significantly depending on the engine size and whether it's a 2WD or 4WD model. There's no single answer.

You'll find that the EPA estimates for a 2003 Suburban ranged from roughly 14-16 MPG city and 17-20 MPG highway. However, real-world mileage will likely be lower, especially with city driving and depending on driving habits and vehicle condition.