2021 head-to-head · Midsize Car
2021 Cadillac CT5 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 Cadillac CT5 is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $2,279 a year to fuel (26 MPG), versus $2,576 for the 2021 Infiniti Q50 (23 MPG). That's roughly $297 a year, or about $1,486 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
- Cadillac CT5
- Infiniti Q50
Side by side
| Cadillac CT5 | Infiniti Q50 | |
|---|---|---|
| $2,279 | Your annual fuel cost | $2,576 |
| 26 MPG | Combined efficiency | 23 MPG |
| 23 MPG | City | 20 MPG |
| 32 MPG | Highway | 29 MPG |
| 99 cu ft | Passenger volume | 100 cu ft |
| 13 cu ft | Cargo volume | 14 cu ft |
| 337 g/mi | Tailpipe CO₂ (g/mi) | 388 g/mi |
| 5/10 | EPA fuel economy score | 5/10 |
| 5/10 | EPA greenhouse gas score | 5/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 2.0L 4-cyl turbo | Engine / motor | 3.0L 6-cyl turbo |
| 10-speed automatic | Transmission | 7-speed automatic |
| RWD | 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.
Cadillac CT5 vs Infiniti Q50 across model years
- Cadillac CT5
- 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 cargo space (14 vs. 13 cu ft).
Among 54 2021 midsize cars, the Cadillac CT5 ranks 39th and the Infiniti Q50 45th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2021 Cadillac CT5 or the 2021 Infiniti Q50?
Measured by cost to drive, the Cadillac CT5. The Cadillac CT5 is rated 26 MPG combined and the Infiniti Q50 23 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2021 Cadillac CT5 vs. the Infiniti Q50 per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,279 for the Cadillac CT5 and $2,576 for the Infiniti Q50.
Which has more cargo space?
The Infiniti Q50, with 14 cu ft of luggage volume versus 13 cu ft (EPA interior volume index).
Cadillac CT5 vs Infiniti Q50 in other years
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