2026 head-to-head · Wagon
2026 Audi A6 Hybrid vs Cadillac Celestiq
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 · 3.0L 6-cyl turbo · 7-speed dual-clutch · 24 MPG
AWD · Electric motors (465 kW) · Single-speed · 81 MPGe · 303 mi
The 2026 Cadillac Celestiq is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas and 18¢/kWh electricity, it costs about $1,126 a year to fuel (81 MPGe), versus $2,469 for the 2026 Audi A6 Hybrid (24 MPG). That's roughly $1,343 a year, or about $6,714 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 A6 Hybrid
- Cadillac Celestiq
Side by side
| Audi A6 Hybrid | Cadillac Celestiq | |
|---|---|---|
| $2,469 | Your annual fuel cost | $1,126 |
| 24 MPG | Combined efficiency | 81 MPGe |
| 21 MPG | City | 84 MPGe |
| 30 MPG | Highway | 77 MPGe |
| — | Electricity use (kWh/100 mi) | 41.7 kWh |
| — | Driving range | 303 mi |
| 101 cu ft | Passenger volume | 107 cu ft |
| 30 cu ft | Cargo volume | 14 cu ft |
| 365 g/mi | Tailpipe CO₂ (g/mi) | 0 g/mi |
| 5/10 | EPA fuel economy score | 9/10 |
| 5/10 | EPA greenhouse gas score | 10/10 |
| — | Charge time at 240V | 8 hrs |
| Hybrid | Powertrain | Electric |
| Premium gasoline | Fuel | Electricity |
| 3.0L 6-cyl turbo | Engine / motor | Electric motors (465 kW) |
| 7-speed dual-clutch | Transmission | Single-speed |
| AWD | Drivetrain | AWD |
✓ 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 Hybrid vs Cadillac Celestiq across model years
- Audi A6 Hybrid
- Cadillac Celestiq
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 Celestiq has more passenger space (107 vs. 101 cu ft); the Audi A6 Hybrid has more cargo space (30 vs. 14 cu ft).
Among 12 2026 wagons, the Audi A6 Hybrid ranks 12th and the Cadillac Celestiq 2nd for lowest fuel cost.
Because the Cadillac Celestiq is fully electric, it has no tailpipe emissions and its running cost depends almost entirely on your electricity rate. Cheap overnight home charging widens its advantage over the Audi A6 Hybrid; relying on DC fast chargers can erase it.
Frequently asked questions
Which is more fuel-efficient, the 2026 Audi A6 Hybrid or the 2026 Cadillac Celestiq?
Measured by cost to drive, the Cadillac Celestiq. The Audi A6 Hybrid is rated 24 MPG combined and the Cadillac Celestiq 81 MPGe (EPA, most efficient configuration of each).
How much does it cost to fuel the 2026 Audi A6 Hybrid vs. the Cadillac Celestiq per year?
At 15,000 miles a year with $3.95/gal premium gas and 18¢/kWh electricity, about $2,469 for the Audi A6 Hybrid and $1,126 for the Cadillac Celestiq.
Which has more cargo space?
The Audi A6 Hybrid, with 30 cu ft of luggage volume versus 14 cu ft (EPA interior volume index).
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