2020 head-to-head · Large Car
2020 Kia Optima vs Subaru Legacy
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
On fuel costs these two are nearly tied. Driving 15,000 miles a year with $3.10/gal regular gas, the most efficient 2020 Kia Optima (31 MPG) costs about $1,500 a year to fuel and the 2020 Subaru Legacy (30 MPG) about $1,550.
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 Optima
- Subaru Legacy
Side by side
| Kia Optima | Subaru Legacy | |
|---|---|---|
| $1,500 | Your annual fuel cost | $1,550 |
| 31 MPG | Combined efficiency | 30 MPG |
| 27 MPG | City | 27 MPG |
| 37 MPG | Highway | 35 MPG |
| 105 cu ft | Passenger volume | 105 cu ft |
| 16 cu ft | Cargo volume | 15 cu ft |
| 292 g/mi | Tailpipe CO₂ (g/mi) | 295 g/mi |
| 7/10 | EPA fuel economy score | 7/10 |
| 7/10 | EPA greenhouse gas score | 7/10 |
| Gas | Powertrain | Gas |
| Regular gasoline | Fuel | Regular gasoline |
| 1.6L 4-cyl turbo | Engine / motor | 2.5L 4-cyl |
| 7-speed dual-clutch | Transmission | CVT |
| FWD | Drivetrain | AWD |
✓ 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 Optima vs Subaru Legacy across model years
- Kia Optima
- Subaru Legacy
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 Optima has more cargo space (16 vs. 15 cu ft).
Among 32 2020 large cars, the Kia Optima ranks 8th and the Subaru Legacy 9th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2020 Kia Optima or the 2020 Subaru Legacy?
Measured by cost to drive, the Kia Optima. The Kia Optima is rated 31 MPG combined and the Subaru Legacy 30 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2020 Kia Optima vs. the Subaru Legacy per year?
At 15,000 miles a year with $3.10/gal regular gas, about $1,500 for the Kia Optima and $1,550 for the Subaru Legacy.
Which has more cargo space?
The Kia Optima, with 16 cu ft of luggage volume versus 15 cu ft (EPA interior volume index).
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