2026 head-to-head · Midsize Car
2026 Audi A5 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 · 2.0L 4-cyl turbo · 7-speed dual-clutch · 26 MPG
On fuel costs these two are nearly tied. Driving 15,000 miles a year with $3.95/gal premium gas, the most efficient 2026 Audi A5 (26 MPG) costs about $2,279 a year to fuel and the 2026 Cadillac CT5 (26 MPG) about $2,279.
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 A5
- Cadillac CT5
Side by side
| Audi A5 | Cadillac CT5 | |
|---|---|---|
| $2,279 | Your annual fuel cost | $2,279 |
| 26 MPG | Combined efficiency | 26 MPG |
| 22 MPG | City | 22 MPG |
| 32 MPG | Highway | 31 MPG |
| 96 cu ft | Passenger volume | 99 cu ft |
| 23 cu ft | Cargo volume | 11 cu ft |
| 345 g/mi | Tailpipe CO₂ (g/mi) | 346 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 | 2.0L 4-cyl turbo |
| 7-speed dual-clutch | 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 A5 vs Cadillac CT5 across model years
- Audi A5
- 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. 96 cu ft); the Audi A5 has more cargo space (23 vs. 11 cu ft).
Among 31 2026 midsize cars, the Audi A5 ranks 24th and the Cadillac CT5 25th for lowest fuel cost.
Frequently asked questions
How much does it cost to fuel the 2026 Audi A5 vs. the Cadillac CT5 per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,279 for the Audi A5 and $2,279 for the Cadillac CT5.
Which has more cargo space?
The Audi A5, with 23 cu ft of luggage volume versus 11 cu ft (EPA interior volume index).
Audi A5 vs Cadillac CT5 in other years
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