2015 head-to-head · Compact Car
2015 Honda Civic CNG vs Subaru Impreza/Outback Sport
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 · 1.8L 4-cyl · 5-speed automatic · 31 MPGe
The 2015 Honda Civic CNG is the cheaper one to run. Driving 15,000 miles a year with $2.90/gge natural gas and $3.10/gal regular gas, it costs about $1,403 a year to fuel (31 MPGe), versus $1,500 for the 2015 Subaru Impreza/Outback Sport (31 MPG). That's roughly $97 a year, or about $484 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
- Honda Civic CNG
- Subaru Impreza/Outback Sport
Side by side
| Honda Civic CNG | Subaru Impreza/Outback Sport | |
|---|---|---|
| $1,403 | Your annual fuel cost | $1,500 |
| 31 MPGe | Combined efficiency | 31 MPG |
| 27 MPGe | City | 28 MPG |
| 38 MPGe | Highway | 36 MPG |
| 95 cu ft | Passenger volume | 97 cu ft |
| 6 cu ft | Cargo volume | 12 cu ft |
| 218 g/mi | Tailpipe CO₂ (g/mi) | 289 g/mi |
| 8/10 | EPA fuel economy score | 8/10 |
| 9/10 | EPA greenhouse gas score | 8/10 |
| Natural gas | Powertrain | Gas |
| Natural gas (CNG) | Fuel | Regular gasoline |
| 1.8L 4-cyl | Engine / motor | 2.0L 4-cyl |
| 5-speed automatic | 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.
Honda Civic CNG vs Subaru Impreza/Outback Sport across model years
- Honda Civic CNG
- Subaru Impreza/Outback Sport
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 Subaru Impreza/Outback Sport has more cargo space (12 vs. 6 cu ft).
Among 52 2015 compact cars, the Honda Civic CNG ranks 12th and the Subaru Impreza/Outback Sport 16th for lowest fuel cost.
The powertrains differ: the Honda Civic CNG is a natural-gas vehicle, while the Subaru Impreza/Outback Sport is a conventional gas model.
Frequently asked questions
Which is more fuel-efficient, the 2015 Honda Civic CNG or the 2015 Subaru Impreza/Outback Sport?
Measured by cost to drive, the Honda Civic CNG. The Honda Civic CNG is rated 31 MPGe combined and the Subaru Impreza/Outback Sport 31 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2015 Honda Civic CNG vs. the Subaru Impreza/Outback Sport per year?
At 15,000 miles a year with $2.90/gge natural gas and $3.10/gal regular gas, about $1,403 for the Honda Civic CNG and $1,500 for the Subaru Impreza/Outback Sport.
Which has more cargo space?
The Subaru Impreza/Outback Sport, with 12 cu ft of luggage volume versus 6 cu ft (EPA interior volume index).
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