2018 head-to-head · Compact Car
2018 Kia Rio vs Mazda 2
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 Mazda 2 is the cheaper one to run. Driving 15,000 miles a year with $3.10/gal regular gas, it costs about $1,329 a year to fuel (35 MPG), versus $1,453 for the 2018 Kia Rio (32 MPG). That's roughly $125 a year, or about $623 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
- Kia Rio
- Mazda 2
Side by side
| Kia Rio | Mazda 2 | |
|---|---|---|
| $1,453 | Your annual fuel cost | $1,329 |
| 32 MPG | Combined efficiency | 35 MPG |
| 28 MPG | City | 32 MPG |
| 37 MPG | Highway | 40 MPG |
| 90 cu ft | Passenger volume | 87 cu ft |
| 14 cu ft | Cargo volume | 16 cu ft |
| 280 g/mi | Tailpipe CO₂ (g/mi) | 252 g/mi |
| 7/10 | EPA fuel economy score | 8/10 |
| 7/10 | EPA greenhouse gas score | 8/10 |
| Gas | Powertrain | Gas |
| Regular gasoline | Fuel | Regular gasoline |
| 1.6L 4-cyl | Engine / motor | 1.5L 4-cyl |
| 6-speed automatic | Transmission | 6-speed automatic |
| FWD | 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.
Kia Rio vs Mazda 2 across model years
- Kia Rio
- Mazda 2
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 Rio has more passenger space (90 vs. 87 cu ft); the Mazda 2 has more cargo space (16 vs. 14 cu ft).
Among 44 2018 compact cars, the Kia Rio ranks 15th and the Mazda 2 8th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2018 Kia Rio or the 2018 Mazda 2?
Measured by cost to drive, the Mazda 2. The Kia Rio is rated 32 MPG combined and the Mazda 2 35 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2018 Kia Rio vs. the Mazda 2 per year?
At 15,000 miles a year with $3.10/gal regular gas, about $1,453 for the Kia Rio and $1,329 for the Mazda 2.
Which has more cargo space?
The Mazda 2, with 16 cu ft of luggage volume versus 14 cu ft (EPA interior volume index).
Kia Rio vs Mazda 2 in other years
More 2018 comparisons
Kia Rio vs…
Or compare the 2018 Kia Rio with anything else: