2020 · Large Car · Gas

2020 Cadillac CT6 MPG & fuel economy

The 2020 Cadillac CT6 is a large car offered in 2 EPA-rated configurations. The most efficient version returns 21 MPG combined (18 city / 27 highway) on regular gasoline. Across the lineup, combined ratings range from 17 to 21 MPG. That's down 7 MPG from the 2019 model. Among 32 large cars rated for 2020, it ranks 18th for lowest fuel cost. At 15,000 miles a year with $3.10/gal regular gas, it costs about $2,214 a year to fuel.

Compare
Combined 21 MPG 18 MPG city · 27 MPG hwy
Driving range — not published for this model
Your fuel cost $2,214 15,000 mi/yr · $14.76 per 100 mi
Class rank, 2020 #18 of 32 Large Cars by fuel cost

What will it cost you?

Your mileage and prices are saved and used across the site.

Fuel average

The 2020 Cadillac CT6's fuel average is 8.9 km/L (11.2 L/100 km), or 21 MPG combined: 7.7 km/L in the city and 11.5 km/L on the highway.

MPGkm/LL/100 km
City187.713.1
Highway2711.58.7
Combined218.911.2

How it ranks among 2020 Large Cars

Full class ranking →
  1. 1Tesla Model S117 MPGe $780
  2. 2Hyundai Ioniq58 MPG $802
  3. 3Hyundai Sonata Hybrid52 MPG $894
  4. 4Honda Accord Hybrid48 MPG $969
  5. 5Porsche Taycan69 MPGe $1,315
  6. 18Cadillac CT621 MPG $2,214
  7. 32Rolls-Royce Ghost14 MPG $4,232
2020 CT6Other large carsClass median: $2,204/yr

Annual fuel cost at 15,000 miles and default prices; shorter bars cost less.

CT6 MPG across model years

Full history →

2 EPA-rated configurations

ConfigurationTypeCityHwyCombinedRangeYour cost / yr
AWD · 3.6L 6-cyl · 10-speed automatic
CT6 AWD		 Gas 18 MPG 27 MPG 21 MPG — $2,214
AWD · 4.2L 8-cyl turbo · 10-speed automatic
CT6 AWD		 Gas 14 MPG 25 MPG 17 MPG — $3,485

Specs (most efficient configuration)

Fuel
Regular gasoline
Engine / motor
3.6L 6-cyl
Transmission
10-speed automatic
Drivetrain
AWD
Passenger volume
110 cu ft
Cargo volume
15 cu ft
Tailpipe CO₂
420 g/mi
EPA fuel economy score
4/10
EPA greenhouse gas score
4/10

2020 Cadillac CT6 vs. rivals

vs Audi A8 Plug-in Hybrid 54 MPGe + 23 MPG · $2,174/yr A8 Plug-in Hybrid saves $41/yr vs Genesis G80 21 MPG · $2,214/yr Same fuel cost vs Porsche Panamera Plug-in Hybrid 51 MPGe + 23 MPG · $2,281/yr CT6 saves $67/yr vs Lincoln Continental 21 MPG · $2,214/yr Same fuel cost vs BMW 7 Series Plug-in Hybrid 56 MPGe + 22 MPG · $2,277/yr CT6 saves $63/yr vs Mercedes-Benz S-Class Plug-in Hybrid 64 MPGe + 23 MPG · $2,017/yr S-Class Plug-in Hybrid saves $197/yr vs BMW 7 Series 24 MPG · $2,469/yr CT6 saves $254/yr vs BMW X1 27 MPG · $2,194/yr X1 saves $20/yr vs Audi A8 Hybrid 21 MPG · $2,821/yr CT6 saves $607/yr vs Audi S8 Hybrid 16 MPG · $3,703/yr CT6 saves $1,489/yr vs Porsche Taycan 69 MPGe · $1,315/yr Taycan saves $899/yr

Compare the 2020 CT6

With any other car from any year, including other CT6 model years. Type a year to jump, e.g. "2015 Accord".

Frequently asked questions

What is the gas mileage of the 2020 Cadillac CT6?

Up to 21 MPG combined (18 city / 27 highway); ratings range from 17 to 21 MPG depending on configuration.

What fuel does the 2020 Cadillac CT6 use?

Regular gasoline.

What is the fuel average in km/L for the 2020 Cadillac CT6?

The 2020 Cadillac CT6's fuel average is 8.9 km/L (11.2 L/100 km), or 21 MPG combined: 7.7 km/L in the city and 11.5 km/L on the highway.

How much does it cost to fuel the 2020 Cadillac CT6 per year?

About $2,214 at 15,000 miles a year with $3.10/gal regular gas, or $14.76 per 100 miles. Use the calculator on this page to plug in your own mileage and prices.

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