2017 head-to-head · Midsize Car
2017 Audi A6 vs Cadillac CTS
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 2017 Cadillac CTS 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 $2,116 for the 2017 Audi A6 (28 MPG). That's roughly $179 a year, or about $893 over five years.
Your numbers
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Fuel cost over 10 years
- Audi A6
- Cadillac CTS
Side by side
| Audi A6 | Cadillac CTS | |
|---|---|---|
| $2,116 | Your annual fuel cost | $1,938 |
| 28 MPG | Combined efficiency | 24 MPG |
| 24 MPG | City | 20 MPG |
| 34 MPG | Highway | 30 MPG |
| 98 cu ft | Passenger volume | 97 cu ft |
| 16 cu ft | Cargo volume | 13 cu ft |
| 317 g/mi | Tailpipe CO₂ (g/mi) | 376 g/mi |
| 6/10 | EPA fuel economy score | 5/10 |
| 6/10 | EPA greenhouse gas score | 5/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Regular gasoline |
| 2.0L 4-cyl turbo | Engine / motor | 3.6L 6-cyl |
| 7-speed dual-clutch | Transmission | 8-speed automatic |
| FWD | 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 A6 vs Cadillac CTS across model years
- Audi A6
- Cadillac CTS
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 Audi A6 has more cargo space (16 vs. 13 cu ft).
Among 67 2017 midsize cars, the Audi A6 ranks 45th and the Cadillac CTS 39th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2017 Audi A6 or the 2017 Cadillac CTS?
Measured by cost to drive, the Cadillac CTS. The Audi A6 is rated 28 MPG combined and the Cadillac CTS 24 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2017 Audi A6 vs. the Cadillac CTS per year?
At 15,000 miles a year with $3.95/gal premium gas and $3.10/gal regular gas, about $2,116 for the Audi A6 and $1,938 for the Cadillac CTS.
Which has more cargo space?
The Audi A6, with 16 cu ft of luggage volume versus 13 cu ft (EPA interior volume index).
Audi A6 vs Cadillac CTS in other years
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