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How big is Chevy Express gas tank?

The typical fuel tank on Chevrolet Express vans is 31 gallons, which is about 117 liters. This capacity covers most gasoline-powered Express models across cargo and passenger configurations.


In practice, tank size can vary slightly by year, engine option, and specific model trim. Always verify the exact capacity for your vehicle using the door placard, owner's manual, or the VIN-based build sheet, since some special configurations or older years may differ by a small amount.


Tank size across the lineup


For most gasoline-powered Express vans, the fuel tank remains 31 gallons (approximately 117 liters). This capacity is used across common engine configurations and body styles, including cargo and passenger variants, helping standardize range and refueling intervals.


What to check for your exact vehicle


Because tank capacity can vary with specific years and engines, it’s best to confirm your exact figure with a few quick references. The fuel door placard on the driver’s side, the owner’s manual, or a dealer’s service portal can provide the precise specification for your VIN.


Practical notes for drivers


Knowing the typical 31-gallon benchmark can help with trip planning and fuel budgeting, but always rely on the official specification for your individual vehicle to avoid discrepancies in range estimates.


Summary


In short, the Chevrolet Express gas tank is generally 31 gallons, with slight variations possible depending on year, engine, and configuration. Verify with official vehicle documentation or your dealer for absolute accuracy, especially if you’re working with a specific build or an older model.

How big is a Chevy Express gas tank?


The standard Chevy Express gas tank size is 31 gallons for most models, including the Express 1500, 2500, and 3500. Some aftermarket or extended-range tanks are available with larger capacities, such as 55 or 60 gallons, but the factory-installed size is typically 31 gallons.
 

  • Standard capacity: 31 gallons. 
  • Models: This applies to a wide range of models, including the Express 1500, 2500, and 3500, across various model years. 
  • Larger aftermarket options: Extended-range, higher-capacity tanks are available from third-party manufacturers. 



How many gallons does a Chevy Express 1500 hold?


Fuel & MPG
434.0/589.0 mi. 31.0 gal.



How many gallons of gas does a Chevy Express 3500 hold?


Fuel & MPG
0/0 mi. 31.0 gal.



How many miles per gallon does a Chevy Express 2500 get?


The Chevy Express 2500 MPG varies significantly by engine and driving conditions, but typically ranges from 11-14 mpg combined for gas engines and can be higher for highway driving. For example, gas engines often get around 11-14 mpg combined, while some users report getting up to 17-20 mpg on the highway. Diesel models may achieve around 20 mpg. 

Engine Typical MPG
Gas 11-14 mpg combined; 14-20 mpg on the highway
Diesel Around 20 mpg
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Factors that affect MPG:
  • Engine type: Different engines have different fuel efficiencies. 
  • Driving conditions: City driving with frequent stops and idling will result in lower mileage than highway driving. 
  • Vehicle load: Hauling cargo or passengers will decrease fuel economy. 


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.