2015 head-to-head · Subcompact Car
2015 Ford Mustang vs Scion iQ
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 2015 Scion iQ is the cheaper one to run. Driving 15,000 miles a year with $3.10/gal regular gas, it costs about $1,257 a year to fuel (37 MPG), versus $1,860 for the 2015 Ford Mustang (25 MPG). That's roughly $603 a year, or about $3,016 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
- Ford Mustang
- Scion iQ
Side by side
| Ford Mustang | Scion iQ | |
|---|---|---|
| $1,860 | Your annual fuel cost | $1,257 |
| 25 MPG | Combined efficiency | 37 MPG |
| 22 MPG | City | 36 MPG |
| 31 MPG | Highway | 37 MPG |
| 83 cu ft | Passenger volume | 74 cu ft |
| 13 cu ft | Cargo volume | 4 cu ft |
| 350 g/mi | Tailpipe CO₂ (g/mi) | 238 g/mi |
| 6/10 | EPA fuel economy score | 9/10 |
| 6/10 | EPA greenhouse gas score | 9/10 |
| Gas | Powertrain | Gas |
| Regular gasoline | Fuel | Regular gasoline |
| 2.3L 4-cyl turbo | Engine / motor | 1.3L 4-cyl |
| 6-speed manual | Transmission | CVT |
| RWD | 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.
Ford Mustang vs Scion iQ across model years
- Ford Mustang
- Scion iQ
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 Ford Mustang has more passenger space (83 vs. 74 cu ft); the Ford Mustang has more cargo space (13 vs. 4 cu ft).
Among 36 2015 subcompact cars, the Ford Mustang ranks 13th and the Scion iQ 5th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2015 Ford Mustang or the 2015 Scion iQ?
Measured by cost to drive, the Scion iQ. The Ford Mustang is rated 25 MPG combined and the Scion iQ 37 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2015 Ford Mustang vs. the Scion iQ per year?
At 15,000 miles a year with $3.10/gal regular gas, about $1,860 for the Ford Mustang and $1,257 for the Scion iQ.
Which has more cargo space?
The Ford Mustang, with 13 cu ft of luggage volume versus 4 cu ft (EPA interior volume index).
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