2018 head-to-head · Large Car
2018 Buick Regal vs Hyundai Ioniq
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
The 2018 Hyundai Ioniq is the cheaper one to run. Driving 15,000 miles a year with $3.10/gal regular gas, it costs about $802 a year to fuel (58 MPG), versus $2,114 for the 2018 Buick Regal (22 MPG). That's roughly $1,312 a year, or about $6,560 over five years.
Your numbers
Change these to match your driving and local prices. Every figure and chart on this page updates.
Fuel cost over 10 years
- Buick Regal
- Hyundai Ioniq
Side by side
| Buick Regal | Hyundai Ioniq | |
|---|---|---|
| $2,114 | Your annual fuel cost | $802 |
| 22 MPG | Combined efficiency | 58 MPG |
| 19 MPG | City | 57 MPG |
| 27 MPG | Highway | 59 MPG |
| 98 cu ft | Passenger volume | 96 cu ft |
| 25 cu ft | Cargo volume | 27 cu ft |
| 403 g/mi | Tailpipe CO₂ (g/mi) | 154 g/mi |
| 4/10 | EPA fuel economy score | 10/10 |
| 4/10 | EPA greenhouse gas score | 10/10 |
| Gas | Powertrain | Hybrid |
| Regular gasoline | Fuel | Regular gasoline |
| 3.6L 6-cyl | Engine / motor | 1.6L 4-cyl |
| 9-speed automatic | Transmission | 6-speed dual-clutch |
| AWD | Drivetrain | FWD |
✓ marks the better value. EPA scores run 1–10 (10 is best). Volumes come from the EPA interior volume index and aren't published for every body style.
Buick Regal vs Hyundai Ioniq across model years
- Buick Regal
- Hyundai Ioniq
Annual fuel cost of the most efficient configuration of each model year, at your prices. Click a point to open that year.
How they differ
Per EPA interior volume figures, the Hyundai Ioniq has more cargo space (27 vs. 25 cu ft).
Among 31 2018 large cars, the Buick Regal ranks 14th and the Hyundai Ioniq 1st for lowest fuel cost.
The powertrains differ: the Buick Regal is a conventional gas model, while the Hyundai Ioniq is a full hybrid.
Frequently asked questions
Which is more fuel-efficient, the 2018 Buick Regal or the 2018 Hyundai Ioniq?
Measured by cost to drive, the Hyundai Ioniq. The Buick Regal is rated 22 MPG combined and the Hyundai Ioniq 58 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2018 Buick Regal vs. the Hyundai Ioniq per year?
At 15,000 miles a year with $3.10/gal regular gas, about $2,114 for the Buick Regal and $802 for the Hyundai Ioniq.
Which has more cargo space?
The Hyundai Ioniq, with 27 cu ft of luggage volume versus 25 cu ft (EPA interior volume index).
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