2018 Kia Soul Gas Tank Size & Fuel Capacity
Fuel tank capacity
14.2gal · 54 L
The 2018 Kia Soul has a fuel tank capacity of 14.2 gallons (54 liters) on every trim.
A full tank is good for roughly 426–440 highway miles or 341–369 miles around town, going by the EPA ratings.
14.2 gal · Smaller than 81% 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 Kia Soul fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Engine
- no difference
All 4 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| ! 4dr Wagon 1.6L 4cyl Turbo 7AM · FWD MPG 26 / 31Range 369 / 440 mi | 1.6L 4cyl Turbo 7AM | FWD | 14.2 gal54 L | 26 / 31 | 369 / 440 mi | |
| + 4dr Wagon 2.0L 4cyl 6A · FWD MPG 25 / 30Range 355 / 426 mi | 2.0L 4cyl 6A | FWD | 14.2 gal54 L | 25 / 30 | 355 / 426 mi | |
| 4dr Wagon 1.6L 4cyl 6A · FWD MPG 25 / 30Range 355 / 426 mi | 1.6L 4cyl 6A | FWD | 14.2 gal54 L | 25 / 30 | 355 / 426 mi | |
| 4dr Wagon 1.6L 4cyl 6M · FWD MPG 24 / 30Range 341 / 426 mi | 1.6L 4cyl 6M | FWD | 14.2 gal54 L | 24 / 30 | 341 / 426 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 Kia Soul 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 27 MPG, a full 14.2-gallon tank covers about 383 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 14.2 | 426 | 355 |
| 3/4 | 10.6 | 319 | 266 |
| 1/2 | 7.1 | 213 | 178 |
| 1/4 | 3.6 | 107 | 89 |
| 1/8 | 1.8 | 53 | 44 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 556 gallons, roughly 39 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
- 27–28 MPG
- Tailpipe CO2
- 320–335 g/mi
- EPA greenhouse score
- 6 of 10
- Source
- EPA ratings
What it costs to fill up a 2018 Kia Soul
$60.63 to fill the 14.2-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 |
|---|---|---|---|---|
| 14.2 gal | Regular | $4.27 | $60.63 | $45.48 |
By region, 14.2-gallon tank
| Region | Regular / gal | Fill from empty |
|---|---|---|
| East Coast | $4.02 | $57.08 |
| Midwest | $4.27 | $60.63 |
| Gulf CoastLowest | $3.70 | $52.54 |
| Rocky Mountain | $4.46 | $63.33 |
| West Coast | $5.42 | $76.96 |
| CaliforniaHighest | $5.89 | $83.64 |
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
- 14.2-gallon tank$60.63
- A year of driving (15,000 mi)$2,372
Starts at the US average for regular; type in what your station charges. For other tank sizes, use the fill-up calculator.
Soul tank size in other years
The 2018 Soul uses the same 14.2 gal tank as every Soul since 2014.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2023 Soul | 14.3 gal | 501 mi |
| 2022 Soul | 14.3 gal | 472 mi |
| 2021 Soul | 14.3 gal | 501 mi |
| 2020 Soul | 14.3 gal | 472 mi |
| 2019 Soul | 14.2 gal | 440 mi |
| 2018 Soul | 14.2 gal | 440 mi |
| 2017 Soul | 14.2 gal | 440 mi |
| 2016 Soul | 14.2 gal | 440 mi |
| 2015 Soul | 14.2 gal | 440 mi |
| 2014 Soul | 14.2 gal | 440 mi |
| 2013 Soul | 12.7 gal | 381 mi |
2018 Kia Soul vs similar 2018 wagons
At 14.2 gallons, the Soul's largest tank ranks second of the three 2018 wagons compared here. The MINI Countryman carries the most (16.1 gal) and the FIAT 500L the least (13.2 gal).
| 2018 model | Tank | Longest highway range |
|---|---|---|
| MINI Countryman | 9.5–16.1 gal | 547 mi |
| Kia Soul | 14.2 gal | 440 mi |
| FIAT 500L | 13.2 gal | 396 mi |
Other 2018 wagons of a similar size, one model per brand.
2018 Kia Soul fuel system recalls
None of the 1 recall NHTSA lists for the 2018 Kia Soul involve the fuel system.
2018 Kia Soul fuel pump and gauge parts
NHTSA lists no fuel-system recall for the 2018 Kia Soul, 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 Kia Soul?
The 2018 Kia Soul holds 14.2 gallons (54 liters) on every trim we list.
How many gallons and liters does the 2018 Kia Soul gas tank hold?
The 2018 Kia Soul tank holds 54 liters, or 14.2 gallons in US gallons.
How far can a 2018 Kia Soul go on a full tank?
About 426–440 miles on the highway and 341–369 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 Kia Soul go on a quarter tank?
About 107 highway miles or 89 in town from the 14.2-gallon tank, which has roughly 3.6 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2018 Kia Soul take?
Regular unleaded. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2018 Kia Soul?
At the US average of $4.27 a gallon for regular (EIA, week of October 26, 2026), filling the 14.2-gallon tank from empty costs $60.63. It ranges from $52.54 in the Gulf Coast to $83.64 in California.
How much does a full tank of gas weigh in a 2018 Kia Soul?
About 88 pounds for the 14.2-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2018 Kia Soul have a bigger gas tank than the FIAT 500L?
Yes. The 2018 Kia Soul holds up to 14.2 gallons; the 2018 FIAT 500L holds up to 13.2.
Has the 2018 Kia Soul had a fuel pump or fuel system recall?
No. None of the 1 recall NHTSA lists for the 2018 Kia Soul 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 (Kia 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.