Kia Niro Plug-in Hybrid
What it costs to keep fuelled
$1,000a year, fuel only
The 2026 Kia Niro Plug-in Hybrid is EPA-rated at 48 MPG combined (49 city / 47 highway). Over 15,000 miles a year that is about 313 gallons, $1000 a year in fuel, or $0.067 per mile at $3.20/gal.
Across its full 2018–2026 run it averages 46.8 MPG, improving by 2 MPG over 8 model years.
The band is how far one gallon carries it: 48 of the 60 MPG this scale runs to. The square tick is the small station wagons average, 29.2.
- Fuel, per year
- $1,000 at 15,000 mi
- Per mile
- $0.067
- Per kilometre
- $0.041
- Gallons burned/yr
- 313
1 mile = 1.609344 km · fuel at $3.20/gal, fixed JUL 2026
Test figure — not a road resultSOURCE·US EPA fuel-economy test data·FUEL ASSUMED AT $3.20/GAL FROM JUL 2026·REVIEWED JUL 2026
How this is worked out
- Start from the EPA combined figure for the model year — a laboratory test cycle run to a fixed procedure, not a road result. Where a year sold several engines or drivetrains, the trims are averaged and the trim count is printed beside the row so you can see how much averaging is behind it.
- Fix a pump price. This site keeps one reference price, $3.20 a US gallon, fixed JUL 2026 and printed next to every dollar figure it produces. It is an assumption with a date on it, not a quote — put your own price in.
- Fix an annual distance. Every annual figure on this site uses 15,000 miles a year, roughly the US average. A cost per year with no stated distance is not a number, it is a mood.
- Divide distance by economy for gallons, multiply by price for the year's fuel, divide price by economy for one mile. The per-kilometre line is that last figure divided by 1.609344 — the same money, in the unit most of the world drives in.
- Stop there. No depreciation, no tyres, no insurance, no servicing. This is the fuel line of the ledger and it is labelled as one; depreciation usually dwarfs everything on it.
gallons/yr = miles/yr ÷ MPG fuel $/yr = gallons/yr × $/gal cost $/mi = $/gal ÷ MPG cost $/km = cost $/mi ÷ 1.609344
The full method, the licence note, and what a test figure cannot tell you →
Re-run the ledger at another pump price
Every line above rests on one pump price. Here is the same entry re-costed at six others, because the price is the part that changes while the test sheet stays put.
| Fuel price | Per mile | 10,000 mi/yr | 15,000 mi/yr | 20,000 mi/yr |
|---|---|---|---|---|
| $2.50/gal | $0.052 | $521 | $781 | $1042 |
| $3.00/gal | $0.063 | $625 | $938 | $1250 |
| $3.20/gal | $0.067 | $667 | $1000 | $1333 |
| $3.50/gal | $0.073 | $729 | $1094 | $1458 |
| $4.00/gal | $0.083 | $833 | $1250 | $1667 |
| $4.50/gal | $0.094 | $938 | $1406 | $1875 |
| $5.00/gal | $0.104 | $1042 | $1563 | $2083 |
SOURCE·US EPA fuel-economy test data·FUEL ASSUMED AT $3.20/GAL FROM JUL 2026·REVIEWED JUL 2026
The whole service history, sheet by sheet
8 model years on file. Read down the combined column: a nameplate that got heavier shows it here long before any brochure admits it.
| Year | Combined | City | Highway | EPA fuel cost/yr | CO₂ g/mi | Trims |
|---|---|---|---|---|---|---|
| 2026 | 48 MPG | 49 | 47 | $1300 | 71 | 1 |
| 2025 | 48 MPG | 49 | 47 | $1300 | 71 | 1 |
| 2023 | 48 MPG | 49 | 47 | $1300 | 71 | 1 |
| 2022 | 46 MPG | 48 | 44 | $1350 | 90 | 1 |
| 2021 | 46 MPG | 48 | 44 | $1350 | 90 | 1 |
| 2020 | 46 MPG | 48 | 44 | $1350 | 90 | 1 |
| 2019 | 46 MPG | 48 | 44 | $1350 | 90 | 1 |
| 2018 | 46 MPG | 48 | 44 | $1350 | 90 | 1 |
Where a model year offered several engines or drivetrains, the figure is the average across all EPA-tested trims that year — the trim count is shown so you can see how much averaging is involved.
SOURCE·US EPA fuel-economy test data·FUEL ASSUMED AT $3.20/GAL FROM JUL 2026·REVIEWED JUL 2026
Marked against the rest of the small station wagons bay
Among the 76 small station wagons models tracked here, the Kia Niro Plug-in Hybrid ranks 6 on current figures, against a class average of 29.2 MPG — the square tick on the gauge above.
Closest more-efficient alternatives in the same class: Kia Niro (49), Kia Niro FE (53), Kia Niro Electric (113), Kia Soul Electric (114), Chevrolet Bolt EV (120).
Tailpipe CO₂ is rated at 71 grams per mile, which works out to roughly 1.1 tonnes a year at 15,000 miles.
Questions asked across the counter
What MPG does the Kia Niro Plug-in Hybrid get?
The 2026 Kia Niro Plug-in Hybrid is rated at 48 MPG combined by the EPA — 49 city and 47 highway. Across all 8 model years in the database it averages 46.8 MPG, ranging from 46 to 48 depending on year and trim.
How much does a Kia Niro Plug-in Hybrid cost in fuel per year?
At 48 MPG and 15,000 miles a year, it burns about 313 gallons — roughly $1000 a year with fuel at $3.20 a gallon, or $0.067 per mile. The EPA's own published annual figure for the 2026 model is $1300.
Has the Kia Niro Plug-in Hybrid become more efficient over time?
Yes. It has gone from 46 MPG in 2018 to 48 in 2026 — an improvement of 2 MPG, or 4% across 8 model years.
Is the Kia Niro Plug-in Hybrid efficient for its class?
It ranks 6 of 76 in the Small Station Wagons class on current figures, against a class average of 29.2 MPG. That is 18.8 better than typical for the class.
Pull another logbook off the same shelf
Same class, nearest economy first — the ones a buyer is genuinely choosing between.
SOURCE·US EPA fuel-economy test data·FUEL ASSUMED AT $3.20/GAL FROM JUL 2026·REVIEWED JUL 2026
Cost per mile, per kilometre and per year are computed at a reference price of $3.20 a gallon over 15,000 miles, fixed JUL 2026 — set your own pump price. Estimates based on official test figures and average fuel prices. Real-world consumption varies with driving style, load, terrain and maintenance.
