2018 Chevrolet Volt Gas Tank Size & Fuel Capacity
Fuel tank capacity
8.9gal · 34 L
The 2018 Chevrolet Volt has a fuel tank capacity of 8.9 gallons (34 liters) on every trim.
A full tank is good for roughly 374 highway miles or 383 miles around town, going by the EPA ratings.
8.9 gal · Smaller than 99% of 2018 models we list.
- By trim
- Gas cap & parts
- Fuel essentials
- Miles per tank
- Fill-up cost
- Other years
- Compared
- Fuel recalls
- Pump & gauge parts
- FAQ
2018 Chevrolet Volt fuel tank capacity by trim
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| LT 4dr Hatchback DD · FWD Plug-in hybrid MPG 43 / 42Range 383 / 374 mi | DD Plug-in hybrid | FWD | 8.9 gal34 L | 43 / 42 | 383 / 374 mi | |
| Premier 4dr Hatchback DD · FWD Plug-in hybrid MPG 43 / 42Range 383 / 374 mi | DD Plug-in hybrid | FWD | 8.9 gal34 L | 43 / 42 | 383 / 374 mi | |
| No trim matches all of these filters. | ||||||
Tank figures are the manufacturer's rated capacity, sorted smallest tank first. Range is tank size times EPA city or highway MPG.
How far a 2018 Chevrolet Volt goes on a tank
Gallons left and the distance they cover at each mark on the fuel gauge, at EPA city and highway mileage. At the combined rating of 42 MPG, a full 8.9-gallon tank covers about 374 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 8.9 | 374 | 383 |
| 3/4 | 6.7 | 280 | 287 |
| 1/2 | 4.5 | 187 | 191 |
| 1/4 | 2.2 | 93 | 96 |
| 1/8 | 1.1 | 47 | 48 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 357 gallons, roughly 40 full tanks.
Fuel gauges aren't perfectly linear and the low-fuel light comes on with a few gallons still in the tank, so plan your stop before the last eighth.
- EPA combined
- 42 MPG
- Tailpipe CO2
- 51 g/mi
- EPA greenhouse score
- 10 of 10
- Source
- EPA ratings
What it costs to fill up a 2018 Chevrolet Volt
$38.00 to fill the 8.9-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 |
|---|---|---|---|---|
| 8.9 gal | Regular | $4.27 | $38.00 | $28.50 |
By region, 8.9-gallon tank
| Region | Regular / gal | Fill from empty |
|---|---|---|
| East Coast | $4.02 | $35.78 |
| Midwest | $4.27 | $38.00 |
| Gulf CoastLowest | $3.70 | $32.93 |
| Rocky Mountain | $4.46 | $39.69 |
| West Coast | $5.42 | $48.24 |
| CaliforniaHighest | $5.89 | $52.42 |
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
- 8.9-gallon tank$38.00
- A year of driving (15,000 mi)$1,525
Starts at the US average for regular; type in what your station charges. For other tank sizes, use the fill-up calculator.
Volt tank size in other years
The 2018 Volt uses the same 8.9 gal tank as every Volt since 2016.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2019 Volt | 8.9 gal | 374 mi |
| 2018 Volt | 8.9 gal | 374 mi |
| 2017 Volt | 8.9 gal | Not rated |
| 2016 Volt | 8.9 gal | 374 mi |
| 2015 Volt | 9.3 gal | 372 mi |
| 2014 Volt | 9.3 gal | 372 mi |
| 2013 Volt | 9.3 gal | 372 mi |
2018 Chevrolet Volt vs similar 2018 hatchbacks
The Volt has the smallest tank of the five 2018 hatchbacks compared here: 8.9 gallons, against 13.2 for the Mazda 3.
| 2018 model | Tank | Longest highway range |
|---|---|---|
| Mazda 3 | 13.2 gal | 502 mi |
| Ford Focus ST | 12.4 gal | 372 mi |
| Hyundai Ioniq Plug-In Hybrid | 11.4 gal | 593 mi |
| Toyota Prius Prime | 11.3 gal | 599 mi |
| Chevrolet Volt | 8.9 gal | 374 mi |
Other 2018 hatchbacks of a similar size, one model per brand.
2018 Chevrolet Volt fuel system recalls
None of the 2 recalls NHTSA lists for the 2018 Chevrolet Volt involve the fuel system.
2018 Chevrolet Volt fuel pump and gauge parts
NHTSA lists no fuel-system recall for the 2018 Chevrolet Volt, so a failed pump or gauge is a normal repair. These are the part numbers the makers list for it.
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Frequently asked questions
What is the fuel tank capacity of the 2018 Chevrolet Volt?
The 2018 Chevrolet Volt holds 8.9 gallons (34 liters) on every trim we list.
How many gallons and liters does the 2018 Chevrolet Volt gas tank hold?
The 2018 Chevrolet Volt tank holds 34 liters, or 8.9 gallons in US gallons.
How far can a 2018 Chevrolet Volt go on a full tank?
About 374 miles on the highway and 383 miles in town, going from full to empty at its EPA ratings. Expect less in practice, since nobody runs the tank dry.
How many miles can a 2018 Chevrolet Volt go on a quarter tank?
About 93 highway miles or 96 in town from the 8.9-gallon tank, which has roughly 2.2 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2018 Chevrolet Volt 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 Volt?
At the US average of $4.27 a gallon for regular (EIA, week of October 26, 2026), filling the 8.9-gallon tank from empty costs $38.00. It ranges from $32.93 in the Gulf Coast to $52.42 in California.
How much does a full tank of gas weigh in a 2018 Chevrolet Volt?
About 55 pounds for the 8.9-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2018 Chevrolet Volt have a bigger gas tank than the Hyundai Ioniq Plug-In Hybrid?
No. The 2018 Hyundai Ioniq Plug-In Hybrid holds up to 11.4 gallons; the 2018 Chevrolet Volt holds up to 8.9.
Has the 2018 Chevrolet Volt had a fuel pump or fuel system recall?
No. None of the 2 recalls NHTSA lists for the 2018 Chevrolet Volt 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 (fueleconomy.gov). 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.