2026 Kia K5 Gas Tank Size & Fuel Capacity
Fuel tank capacity
15.8gal · 60 L
The 2026 Kia K5 has a fuel tank capacity of 15.8 gallons (60 liters) on every trim.
A full tank is good for roughly 521–585 highway miles or 363–411 miles around town, going by the EPA ratings.
15.8 gal · Smaller than 68% of 2026 models we list.
- By trim
- Gas cap & parts
- Fuel essentials
- Miles per tank
- Fill-up cost
- Other years
- Compared
- Fuel recalls
- FAQ
2026 Kia K5 fuel tank capacity by trim
What changes the tank sizeTap an option to filter the table
- Drive
- no difference
- Engine
- no difference
All 5 trims
MPG and range are city / highway.
| Trim | Engine | Drive | Tank | MPG city / hwy | Range city / hwy | |
|---|---|---|---|---|---|---|
| EX 4dr Sedan 2.5L 4cyl 8A · FWD MPG 25 / 36Range 395 / 569 mi | 2.5L 4cyl 8A | FWD | 15.8 gal60 L | 25 / 36 | 395 / 569 mi | |
| GT 4dr Sedan 2.5L 4cyl Turbo 8AM · FWD MPG 23 / 33Range 363 / 521 mi | 2.5L 4cyl Turbo 8AM | FWD | 15.8 gal60 L | 23 / 33 | 363 / 521 mi | |
| GT-Line 4dr Sedan 2.5L 4cyl 8A · FWD MPG 25 / 36Range 395 / 569 mi | 2.5L 4cyl 8A | FWD | 15.8 gal60 L | 25 / 36 | 395 / 569 mi | |
| GT-Line 4dr Sedan AWD 2.5L 4cyl 8A · AWD MPG 24 / 33Range 379 / 521 mi | 2.5L 4cyl 8A | AWD | 15.8 gal60 L | 24 / 33 | 379 / 521 mi | |
| LXS 4dr Sedan 2.5L 4cyl 8A · FWD MPG 26 / 37Range 411 / 585 mi | 2.5L 4cyl 8A | FWD | 15.8 gal60 L | 26 / 37 | 411 / 585 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 2026 Kia K5 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 29 MPG, a full 15.8-gallon tank covers about 458 miles.
| Gauge | Gallons | Highway miles | City miles |
|---|---|---|---|
| Full | 15.8 | 569 | 395 |
| 3/4 | 11.9 | 427 | 296 |
| 1/2 | 7.9 | 284 | 198 |
| 1/4 | 4.0 | 142 | 99 |
| 1/8 | 2.0 | 71 | 49 |
Over 15,000 miles a year (the EPA's yearly estimate) this configuration uses about 517 gallons, roughly 33 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
- 27–30 MPG
- Tailpipe CO2
- 298–331 g/mi
- EPA greenhouse score
- 5–6 of 10
- Source
- EPA ratings
What it costs to fill up a 2026 Kia K5
$67.47 to fill the 15.8-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 |
|---|---|---|---|---|
| 15.8 gal | Regular | $4.27 | $67.47 | $50.60 |
By region, 15.8-gallon tank
| Region | Regular / gal | Fill from empty |
|---|---|---|
| East Coast | $4.02 | $63.52 |
| Midwest | $4.27 | $67.47 |
| Gulf CoastLowest | $3.70 | $58.46 |
| Rocky Mountain | $4.46 | $70.47 |
| West Coast | $5.42 | $85.64 |
| CaliforniaHighest | $5.89 | $93.06 |
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
- 15.8-gallon tank$67.47
- A year of driving (15,000 mi)$2,209
Starts at the US average for regular; type in what your station charges. For other tank sizes, use the fill-up calculator.
K5 tank size in other years
The 2026 K5 uses the same 15.8 gal tank as every K5 since 2023.
| Model year | Tank | Longest highway range |
|---|---|---|
| 2026 K5 | 15.8 gal | 585 mi |
| 2025 K5 | 15.8 gal | 585 mi |
| 2024 K5 | 15.8 gal | 585 mi |
| 2023 K5 | 15.8 gal | 585 mi |
| 2022 K5 | 14.8–15.8 gal | 585 mi |
| 2021 K5 | 14.8 gal | 562 mi |
2026 Kia K5 vs similar 2026 sedans
At 15.8 gallons, the K5's largest tank ranks fourth of the seven 2026 sedans compared here. The Subaru WRX carries the most (16.6 gal) and the Toyota Camry the least (13.0 gal).
| 2026 model | Tank | Longest highway range |
|---|---|---|
| Subaru WRX | 16.6 gal | 432 mi |
| Nissan Altima | 16.0–16.2 gal | 583 mi |
| Hyundai Sonata | 13.2–15.9 gal | 739 mi |
| Kia K5 | 15.8 gal | 585 mi |
| Honda Accord | 12.8–14.8 gal | 563 mi |
| Volkswagen Jetta GLI | 13.2 gal | 475 mi |
| Toyota Camry | 13.0 gal | 637 mi |
Other 2026 sedans of a similar size, one model per brand.
2026 Kia K5 fuel system recalls
None of the 1 recall NHTSA lists for the 2026 Kia K5 involve the fuel system.
Frequently asked questions
What is the fuel tank capacity of the 2026 Kia K5?
The 2026 Kia K5 holds 15.8 gallons (60 liters) on every trim we list.
How many gallons and liters does the 2026 Kia K5 gas tank hold?
The 2026 Kia K5 tank holds 60 liters, or 15.8 gallons in US gallons.
Does AWD change the 2026 Kia K5 gas tank?
No. FWD and AWD versions of the 2026 Kia K5 use the same 15.8 gal tank.
How far can a 2026 Kia K5 go on a full tank?
About 521–585 miles on the highway and 363–411 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 2026 Kia K5 go on a quarter tank?
About 142 highway miles or 99 in town from the 15.8-gallon tank, which has roughly 4.0 gallons left at the quarter mark. Gauges aren't exact, so treat that as a guide.
What gas does the 2026 Kia K5 take?
Regular unleaded. The label inside the fuel door confirms it for your car.
How much does it cost to fill up a 2026 Kia K5?
At the US average of $4.27 a gallon for regular (EIA, week of October 26, 2026), filling the 15.8-gallon tank from empty costs $67.47. It ranges from $58.46 in the Gulf Coast to $93.06 in California.
How much does a full tank of gas weigh in a 2026 Kia K5?
About 98 pounds for the 15.8-gallon tank. Gasoline weighs roughly 6.2 pounds a gallon.
Does the 2026 Kia K5 have a bigger gas tank than the Nissan Altima?
No. The 2026 Nissan Altima holds up to 16.2 gallons; the 2026 Kia K5 holds up to 15.8.
Has the 2026 Kia K5 had a fuel pump or fuel system recall?
No. None of the 1 recall NHTSA lists for the 2026 Kia K5 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.