2025 head-to-head · Midsize Car
2025 Audi S7 Hybrid vs Cadillac CT5
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
AWD · 2.9L 6-cyl · 8-speed automatic · 22 MPG
The 2025 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 $2,693 for the 2025 Audi S7 Hybrid (22 MPG). That's roughly $414 a year, or about $2,072 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 S7 Hybrid
- Cadillac CT5
Side by side
| Audi S7 Hybrid | Cadillac CT5 | |
|---|---|---|
| $2,693 | Your annual fuel cost | $2,279 |
| 22 MPG | Combined efficiency | 26 MPG |
| 19 MPG | City | 23 MPG |
| 27 MPG | Highway | 32 MPG |
| 94 cu ft | Passenger volume | 99 cu ft |
| 25 cu ft | Cargo volume | 11 cu ft |
| 408 g/mi | Tailpipe CO₂ (g/mi) | 341 g/mi |
| 5/10 | EPA fuel economy score | 5/10 |
| 5/10 | EPA greenhouse gas score | 5/10 |
| Hybrid | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 2.9L 6-cyl | Engine / motor | 2.0L 4-cyl turbo |
| 8-speed automatic | Transmission | 10-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 S7 Hybrid vs Cadillac CT5 across model years
- Audi S7 Hybrid
- Cadillac CT5
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 Cadillac CT5 has more passenger space (99 vs. 94 cu ft); the Audi S7 Hybrid has more cargo space (25 vs. 11 cu ft).
Among 42 2025 midsize cars, the Audi S7 Hybrid ranks 39th and the Cadillac CT5 32nd for lowest fuel cost.
The powertrains differ: the Audi S7 Hybrid is a full hybrid, while the Cadillac CT5 is a conventional gas model.
Frequently asked questions
Which is more fuel-efficient, the 2025 Audi S7 Hybrid or the 2025 Cadillac CT5?
Measured by cost to drive, the Cadillac CT5. The Audi S7 Hybrid is rated 22 MPG combined and the Cadillac CT5 26 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2025 Audi S7 Hybrid vs. the Cadillac CT5 per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,693 for the Audi S7 Hybrid and $2,279 for the Cadillac CT5.
Which has more cargo space?
The Audi S7 Hybrid, with 25 cu ft of luggage volume versus 11 cu ft (EPA interior volume index).
Audi S7 Hybrid vs Cadillac CT5 in other years
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