How many miles can a 99 Tahoe go on a full tank?
On a full tank, a 1999 Tahoe with a 5.7L V8 typically covers about 450 to 550 miles, depending on drivetrain, driving conditions, and maintenance.
To understand why, you need two key figures: the fuel tank capacity and the vehicle’s fuel economy. The Tahoe’s tank holds about 31 gallons. Fuel economy varies by configuration and driving style, but older Tahoes with the 5.7L V8 commonly achieve roughly 14–18 miles per gallon depending on whether it’s 2WD or 4WD and whether you’re mostly in the city or on the highway. Multiply the tank capacity by the mpg to estimate range.
The following figures provide baseline estimates you can use for planning trips or daily driving.
- Fuel tank capacity: about 31 gallons (approximately 117–118 liters)
- Estimated fuel economy: roughly 14–18 miles per gallon, depending on drivetrain (2WD vs 4WD) and driving style
- Estimated range on a full tank: typically 430–560 miles, depending on driving conditions
These figures give you a practical ballpark. Real-world range will vary with terrain, cargo, tire size, maintenance, and fuel quality.
Factors that influence range
Range is affected by conditions and configuration. The Tahoe can vary widely between city driving and highway cruising. Heavier payloads, wind resistance, and tire type can also shift the actual miles per gallon.
Two-wheel drive (2WD) and 5.7L V8
In typical mixed driving, expect about 15 miles per gallon combined, yielding roughly 465 miles from a full 31-gallon tank.
Four-wheel drive (4WD) and 5.7L V8
4WD typically reduces efficiency by a bit, giving around 14 miles per gallon combined and about 434 miles on a full tank, under similar conditions.
Summary
For a 1999 Chevy Tahoe with a 5.7L V8, a full tank translates roughly to 430–560 miles, with most daily driving landing in the mid-400s. Keep in mind tank size and mpg can vary slightly by model year, condition, and configuration.
