2018 Chevrolet Express Gas Tank Size & Fuel Capacity
Fuel tank capacity
31.0gal · 117 L
The 2018 Chevrolet Express has a fuel tank capacity of 31.0 gallons (117 liters) on every trim.
31.0 gal · Bigger than 94% of 2018 models we list.
Listed separately: 2018 Chevrolet Express Cargo (31.0 gal).
2018 Chevrolet Express fuel tank capacity by trim
| Trim | Engine | Drive | Tank | |||
|---|---|---|---|---|---|---|
| LS 2500 3dr Van 4.3L 6cyl 8A · RWD | 4.3L 6cyl 8A | RWD | 31.0 gal117 L | |||
| LS 3500 3dr Ext Van 4.3L 6cyl 8A · RWD | 4.3L 6cyl 8A | RWD | 31.0 gal117 L | |||
| LS 3500 3dr Van 4.3L 6cyl 8A · RWD | 4.3L 6cyl 8A | RWD | 31.0 gal117 L | |||
| LT 2500 3dr Van 4.3L 6cyl 8A · RWD | 4.3L 6cyl 8A | RWD | 31.0 gal117 L | |||
| LT 3500 3dr Ext Van 4.3L 6cyl 8A · RWD | 4.3L 6cyl 8A | RWD | 31.0 gal117 L | |||
| LT 3500 3dr Van 4.3L 6cyl 8A · RWD | 4.3L 6cyl 8A | RWD | 31.0 gal117 L | |||
| No trim matches all of these filters. | ||||||
Tank figures are the manufacturer's rated capacity, sorted smallest tank first. The EPA doesn't rate fuel economy for heavy-duty pickups and vans (over 8,500 lb gross vehicle weight), so these trims have no official MPG or range.
What it costs to fill up a 2018 Chevrolet Express
$132.37 to fill the 31.0-gallon tank from empty with regular, at this week's US average of $4.27 a gallon.
| Tank | Fuel | US avg / gal | From empty | From 1/4 tank |
|---|---|---|---|---|
| 31.0 gal | Regular | $4.27 | $132.37 | $99.28 |
By region, 31.0-gallon tank
| Region | Regular / gal | Fill from empty |
|---|---|---|
| East Coast | $4.02 | $124.62 |
| Midwest | $4.27 | $132.37 |
| Gulf CoastLowest | $3.70 | $114.70 |
| Rocky Mountain | $4.46 | $138.26 |
| West Coast | $5.42 | $168.02 |
| CaliforniaHighest | $5.89 | $182.59 |
Prices: U.S. Energy Information Administration retail averages for the week of October 26, 2026. This week's prices by state and city.
Your own price
- 31.0-gallon tank$132.37
Starts at the US average for regular; type in what your station charges. For other tank sizes, use the fill-up calculator.
Express tank size in other years
The 2018 Express uses the same 31.0 gal tank as every Express since 1996.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2023 Express | 31.0 gal | Not rated |
| 2022 Express | 31.0 gal | Not rated |
| 2021 Express | 31.0 gal | Not rated |
| 2020 Express | 31.0 gal | Not rated |
| 2019 Express | 31.0 gal | Not rated |
| 2018 Express | 31.0 gal | Not rated |
| 2017 Express | 31.0 gal | 496 mi |
| 2016 Express | 31.0 gal | 496 mi |
| 2015 Express | 31.0 gal | 527 mi |
| 2014 Express | 31.0 gal | 527 mi |
| 2013 Express | 31.0 gal | 527 mi |
- 2026
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2018 Chevrolet Express vs similar 2018 vans
The Express has the largest tank of the two 2018 vans compared here, 31.0 gallons against 31.0 for the GMC Savana.
| 2018 model | Tank | Longest highway range |
|---|---|---|
| Chevrolet Express | 31.0 gal | Not rated |
| GMC Savana | 31.0 gal | Not rated |
Other 2018 vans of a similar size, one model per brand.
2018 Chevrolet Express fuel system recalls
None of the 8 recalls NHTSA lists for the 2018 Chevrolet Express involve the fuel system.
Frequently asked questions
What is the fuel tank capacity of the 2018 Chevrolet Express?
The 2018 Chevrolet Express holds 31.0 gallons (117 liters) on every trim we list.
How many gallons and liters does the 2018 Chevrolet Express gas tank hold?
The 2018 Chevrolet Express tank holds 117 liters, or 31.0 gallons in US gallons.
What gas does the 2018 Chevrolet Express take?
Regular unleaded. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2018 Chevrolet Express?
At the US average of $4.27 a gallon for regular (EIA, week of October 26, 2026), filling the 31.0-gallon tank from empty costs $132.37. It ranges from $114.70 in the Gulf Coast to $182.59 in California.
How much does a full tank of gas weigh in a 2018 Chevrolet Express?
About 192 pounds for the 31.0-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2018 Chevrolet Express have a bigger gas tank than the GMC Savana?
No, they match: both top out at 31.0 gallons in 2018.
Has the 2018 Chevrolet Express had a fuel pump or fuel system recall?
No. None of the 8 recalls NHTSA lists for the 2018 Chevrolet Express involve the fuel system.
Sources
- Tank sizes: manufacturer-rated capacities from US-market specifications, checked against independent references. Updated October 2026.
- MPG and range: EPA ratings. Range is tank size times EPA MPG.
- Fuel prices: U.S. Energy Information Administration, week of October 26, 2026 (this week's prices).
- Recalls: NHTSA recall database (Chevrolet fuel system recalls).
Does your owner's manual say something different? Let us know and we'll fix it. More on how we check the numbers.