Hyundai Ioniq Plug-in Hybrid
What it costs to keep fuelled
$923a year, fuel only
The 2022 Hyundai Ioniq Plug-in Hybrid is EPA-rated at 52 MPG combined (52 city / 51 highway). Over 15,000 miles a year that is about 288 gallons, $923 a year in fuel, or $0.062 per mile at $3.20/gal.
Across its full 2018–2022 run it averages 52 MPG, essentially flat across 5 model years.
The band is how far one gallon carries it: 52 of the 60 MPG this scale runs to. The square tick is the midsize cars average, 27.1.
- Fuel, per year
- $923 at 15,000 mi
- Per mile
- $0.062
- Per kilometre
- $0.038
- Gallons burned/yr
- 288
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 | $0.048 | $481 | $721 | $962 |
| $3.00/gal | $0.058 | $577 | $865 | $1154 |
| $3.20/gal | $0.062 | $615 | $923 | $1231 |
| $3.50/gal | $0.067 | $673 | $1010 | $1346 |
| $4.00/gal | $0.077 | $769 | $1154 | $1538 |
| $4.50/gal | $0.087 | $865 | $1298 | $1731 |
| $5.00/gal | $0.096 | $962 | $1442 | $1923 |
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
5 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 |
|---|---|---|---|---|---|---|
| 2022 | 52 MPG | 52 | 51 | $1200 | 74 | 1 |
| 2021 | 52 MPG | 52 | 51 | $1200 | 74 | 1 |
| 2020 | 52 MPG | 53 | 52 | $1200 | 74 | 1 |
| 2019 | 52 MPG | 53 | 52 | $1200 | 74 | 1 |
| 2018 | 52 MPG | 53 | 52 | $1200 | 75 | 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 midsize cars bay
Among the 261 midsize cars models tracked here, the Hyundai Ioniq Plug-in Hybrid ranks 14 on current figures, against a class average of 27.1 MPG — the square tick on the gauge above.
Closest more-efficient alternatives in the same class: Hyundai Elantra Hybrid Blue (54), Toyota Prius AWD (54), Toyota Prius Eco (56), Toyota Prius (57), Honda Clarity FCV (68).
Tailpipe CO₂ is rated at 74 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 Hyundai Ioniq Plug-in Hybrid get?
The 2022 Hyundai Ioniq Plug-in Hybrid is rated at 52 MPG combined by the EPA — 52 city and 51 highway. Across all 5 model years in the database it averages 52 MPG, ranging from 52 to 52 depending on year and trim.
How much does a Hyundai Ioniq Plug-in Hybrid cost in fuel per year?
At 52 MPG and 15,000 miles a year, it burns about 288 gallons — roughly $923 a year with fuel at $3.20 a gallon, or $0.062 per mile. The EPA's own published annual figure for the 2022 model is $1200.
Has the Hyundai Ioniq Plug-in Hybrid become more efficient over time?
Barely. It sits at 52 MPG today against 52 in 2018 — essentially flat across 5 model years, with efficiency gains offset by weight and power creep.
Is the Hyundai Ioniq Plug-in Hybrid efficient for its class?
It ranks 14 of 261 in the Midsize Cars class on current figures, against a class average of 27.1 MPG. That is 24.9 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.
