2018 head-to-head · Large Car
2018 Buick Regal vs Kia Cadenza
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
FWD · 3.3L 6-cyl · 8-speed automatic · 23 MPG
The 2018 Kia Cadenza is the cheaper one to run. Driving 15,000 miles a year with $3.10/gal regular gas, it costs about $2,022 a year to fuel (23 MPG), versus $2,114 for the 2018 Buick Regal (22 MPG). That's roughly $92 a year, or about $459 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
- Kia Cadenza
Side by side
| Buick Regal | Kia Cadenza | |
|---|---|---|
| $2,114 | Your annual fuel cost | $2,022 |
| 22 MPG | Combined efficiency | 23 MPG |
| 19 MPG | City | 20 MPG |
| 27 MPG | Highway | 28 MPG |
| 98 cu ft | Passenger volume | 108 cu ft |
| 25 cu ft | Cargo volume | 16 cu ft |
| 403 g/mi | Tailpipe CO₂ (g/mi) | 383 g/mi |
| 4/10 | EPA fuel economy score | 5/10 |
| 4/10 | EPA greenhouse gas score | 5/10 |
| Gas | Powertrain | Gas |
| Regular gasoline | Fuel | Regular gasoline |
| 3.6L 6-cyl | Engine / motor | 3.3L 6-cyl |
| 9-speed automatic | Transmission | 8-speed automatic |
| 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 Kia Cadenza across model years
- Buick Regal
- Kia Cadenza
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 Kia Cadenza has more passenger space (108 vs. 98 cu ft); the Buick Regal has more cargo space (25 vs. 16 cu ft).
Among 31 2018 large cars, the Buick Regal ranks 14th and the Kia Cadenza 13th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2018 Buick Regal or the 2018 Kia Cadenza?
Measured by cost to drive, the Kia Cadenza. The Buick Regal is rated 22 MPG combined and the Kia Cadenza 23 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2018 Buick Regal vs. the Kia Cadenza per year?
At 15,000 miles a year with $3.10/gal regular gas, about $2,114 for the Buick Regal and $2,022 for the Kia Cadenza.
Which has more cargo space?
The Buick Regal, with 25 cu ft of luggage volume versus 16 cu ft (EPA interior volume index).
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