2018 head-to-head · Large Car
2018 Cadillac CT6 vs Genesis G80
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 2018 Genesis G80 is the cheaper one to run. Driving 15,000 miles a year with $3.10/gal regular gas, it costs about $2,114 a year to fuel (22 MPG), versus $2,214 for the 2018 Cadillac CT6 (21 MPG). That's roughly $101 a year, or about $503 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 CT6
- Genesis G80
Side by side
| Cadillac CT6 | Genesis G80 | |
|---|---|---|
| $2,214 | Your annual fuel cost | $2,114 |
| 21 MPG | Combined efficiency | 22 MPG |
| 18 MPG | City | 19 MPG |
| 27 MPG | Highway | 27 MPG |
| 110 cu ft | Passenger volume | 108 cu ft |
| 15 cu ft | Cargo volume | 15 cu ft |
| 416 g/mi | Tailpipe CO₂ (g/mi) | 414 g/mi |
| 4/10 | EPA fuel economy score | 4/10 |
| 4/10 | EPA greenhouse gas score | 4/10 |
| Gas | Powertrain | Gas |
| Regular gasoline | Fuel | Regular gasoline |
| 3.6L 6-cyl | Engine / motor | 3.8L 6-cyl |
| 8-speed automatic | Transmission | 8-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.
Cadillac CT6 vs Genesis G80 across model years
- Cadillac CT6
- Genesis G80
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
Among 31 2018 large cars, the Cadillac CT6 ranks 19th and the Genesis G80 16th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2018 Cadillac CT6 or the 2018 Genesis G80?
Measured by cost to drive, the Genesis G80. The Cadillac CT6 is rated 21 MPG combined and the Genesis G80 22 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2018 Cadillac CT6 vs. the Genesis G80 per year?
At 15,000 miles a year with $3.10/gal regular gas, about $2,214 for the Cadillac CT6 and $2,114 for the Genesis G80.
Cadillac CT6 vs Genesis G80 in other years
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