2019 head-to-head · Large Car

2019 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.

Swap sides
✓ Cheaper to run
$2,116/ year to fuel
28 MPG
✓ Cheaper to run
$2,214/ year to fuel
21 MPG

The 2019 Cadillac CT6 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 $2,116 a year to fuel (28 MPG), versus $2,214 for the 2019 Genesis G80 (21 MPG). That's roughly $98 a year, or about $491 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 CT6Genesis G80
$2,116 Your annual fuel cost $2,214
28 MPG Combined efficiency 21 MPG
24 MPG City 18 MPG
34 MPG Highway 26 MPG
110 cu ft Passenger volume 108 cu ft
15 cu ft Cargo volume 15 cu ft
317 g/mi Tailpipe CO₂ (g/mi) 423 g/mi
6/10 EPA fuel economy score 4/10
6/10 EPA greenhouse gas score 4/10
Gas Powertrain Gas
Premium gasoline Fuel Regular gasoline
2.0L 4-cyl turbo Engine / motor 3.8L 6-cyl
10-speed automatic Transmission 8-speed automatic
RWD 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 30 2019 large cars, the Cadillac CT6 ranks 14th and the Genesis G80 17th for lowest fuel cost.

Frequently asked questions

Which is more fuel-efficient, the 2019 Cadillac CT6 or the 2019 Genesis G80?

Measured by cost to drive, the Cadillac CT6. The Cadillac CT6 is rated 28 MPG combined and the Genesis G80 21 MPG (EPA, most efficient configuration of each).

How much does it cost to fuel the 2019 Cadillac CT6 vs. the Genesis G80 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 Cadillac CT6 and $2,214 for the Genesis G80.

Cadillac CT6 vs Genesis G80 in other years

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