2021 head-to-head · Midsize Car
2021 Audi RS vs Infiniti Q50
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 2021 Infiniti Q50 is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $2,576 a year to fuel (23 MPG), versus $2,821 for the 2021 Audi RS (21 MPG). That's roughly $245 a year, or about $1,227 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
- Audi RS
- Infiniti Q50
Side by side
| Audi RS | Infiniti Q50 | |
|---|---|---|
| $2,821 | Your annual fuel cost | $2,576 |
| 21 MPG | Combined efficiency | 23 MPG |
| 18 MPG | City | 20 MPG |
| 25 MPG | Highway | 29 MPG |
| 91 cu ft | Passenger volume | 100 cu ft |
| 22 cu ft | Cargo volume | 14 cu ft |
| 428 g/mi | Tailpipe CO₂ (g/mi) | 388 g/mi |
| 4/10 | EPA fuel economy score | 5/10 |
| 4/10 | EPA greenhouse gas score | 5/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 2.9L 6-cyl turbo | Engine / motor | 3.0L 6-cyl turbo |
| 8-speed automatic | Transmission | 7-speed automatic |
| AWD | Drivetrain | RWD |
✓ 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.
Audi RS vs Infiniti Q50 across model years
- Audi RS
- Infiniti Q50
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 Infiniti Q50 has more passenger space (100 vs. 91 cu ft); the Audi RS has more cargo space (22 vs. 14 cu ft).
Among 54 2021 midsize cars, the Audi RS ranks 49th and the Infiniti Q50 45th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2021 Audi RS or the 2021 Infiniti Q50?
Measured by cost to drive, the Infiniti Q50. The Audi RS is rated 21 MPG combined and the Infiniti Q50 23 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2021 Audi RS vs. the Infiniti Q50 per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,821 for the Audi RS and $2,576 for the Infiniti Q50.
Which has more cargo space?
The Audi RS, with 22 cu ft of luggage volume versus 14 cu ft (EPA interior volume index).
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