2015 head-to-head · Midsize Car
2015 Roush Performance Mustang vs Toyota Avalon
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 · 3.5L 6-cyl · 6-speed automatic · 24 MPG
The 2015 Toyota Avalon is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas and $3.10/gal regular gas, it costs about $1,938 a year to fuel (24 MPG), versus $3,703 for the 2015 Roush Performance Mustang (16 MPG). That's roughly $1,766 a year, or about $8,828 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
- Roush Performance Mustang
- Toyota Avalon
Side by side
| Roush Performance Mustang | Toyota Avalon | |
|---|---|---|
| $3,703 | Your annual fuel cost | $1,938 |
| 16 MPG | Combined efficiency | 24 MPG |
| 13 MPG | City | 21 MPG |
| 23 MPG | Highway | 30 MPG |
| 98 cu ft | Passenger volume | 104 cu ft |
| 13 cu ft | Cargo volume | 16 cu ft |
| 553 g/mi | Tailpipe CO₂ (g/mi) | 365 g/mi |
| 3/10 | EPA fuel economy score | 6/10 |
| 3/10 | EPA greenhouse gas score | 6/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Regular gasoline |
| 5.0L 8-cyl supercharged | Engine / motor | 3.5L 6-cyl |
| 6-speed automatic | Transmission | 6-speed automatic |
| 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.
Roush Performance Mustang vs Toyota Avalon across model years
- Roush Performance Mustang
- Toyota Avalon
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 Toyota Avalon has more passenger space (104 vs. 98 cu ft); the Toyota Avalon has more cargo space (16 vs. 13 cu ft).
Among 69 2015 midsize cars, the Roush Performance Mustang ranks 66th and the Toyota Avalon 42nd for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2015 Roush Performance Mustang or the 2015 Toyota Avalon?
Measured by cost to drive, the Toyota Avalon. The Roush Performance Mustang is rated 16 MPG combined and the Toyota Avalon 24 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2015 Roush Performance Mustang vs. the Toyota Avalon per year?
At 15,000 miles a year with $3.95/gal premium gas and $3.10/gal regular gas, about $3,703 for the Roush Performance Mustang and $1,938 for the Toyota Avalon.
Which has more cargo space?
The Toyota Avalon, with 16 cu ft of luggage volume versus 13 cu ft (EPA interior volume index).
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