The 2018 Cadillac CT6 gets a 2-liter I4 under the hood that makes 265 hp @ 5500 rpm horsepower and 295 lb.-ft. @ 3000 rpm of torque. This engine is quite fuel-efficient and helps the car deliver a mileage of 22 mpg in the city and 30 mpg on the highway. The combined efficiency of the engine comes out to be 25 mpg as rated by the EPA.

For the performance-oriented buyers, Cadillac provides an option to choose another engine. It's a 3.6-liter V6 motor that churns out 335 hp @ 6800 rpm horsepower and 284 lb.-ft. @ 5300 rpm of torque. The engine is a gas guzzler and provides an efficiency of 18 mpg in the city, 27 mpg on the highway and combined mileage of 21 mpg. The total fuel-tank capacity of the car is 19.5 gallons and you can travel up to 351.0/526.5 miles once it's full.

For the performance-oriented buyers, Cadillac provides an option to choose another engine. It's a 3-liter V6 motor that churns out 404 hp @ 5700 rpm horsepower and 400 lb.-ft. @ 2500 rpm of torque. The engine is a gas guzzler and provides an efficiency of 18 mpg in the city, 26 mpg on the highway and combined mileage of 21 mpg. The total fuel-tank capacity of the car is 19.5 gallons and you can travel up to 351.0/507.0 miles once it's full.

2018 Cadillac CT6 MPG and Range

Trim NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
4dr Sedan (2.0L 4cyl Turbo 8A)22 mpg30 mpg25 mpg19.5 gal.266.0/399.0 mi.
4dr Sedan AWD (3.6L 6cyl 8A)18 mpg27 mpg21 mpg19.5 gal.351.0/526.5 mi.
Luxury 4dr Sedan (2.0L 4cyl Turbo 8A)22 mpg30 mpg25 mpg19.5 gal.429.0/585.0 mi.
Luxury 4dr Sedan AWD (3.0L 6cyl Turbo 8A)18 mpg26 mpg21 mpg19.5 gal.351.0/507.0 mi.
Luxury 4dr Sedan AWD (3.6L 6cyl 8A)18 mpg27 mpg21 mpg19.5 gal.351.0/526.5 mi.
Platinum 4dr Sedan AWD (3.0L 6cyl Turbo 8A)18 mpg26 mpg21 mpg19.5 gal.351.0/507.0 mi.
Platinum 4dr Sedan AWD (3.6L 6cyl 8A)18 mpg27 mpg21 mpg19.5 gal.351.0/526.5 mi.
Premium Luxury 4dr Sedan AWD (3.0L 6cyl Turbo 8A)18 mpg26 mpg21 mpg19.5 gal.351.0/507.0 mi.
Premium Luxury 4dr Sedan AWD (3.6L 6cyl 8A)18 mpg27 mpg21 mpg19.5 gal.351.0/526.5 mi.
Loading...

Used 2018 Cadillac CT6 For Sale

View More
2017 Cadillac CT6
5

2017 Cadillac CT6 Sedan

Luxury

$27,918
Est. $379/mo
Excellent Deal
$7,228.5 Below market
RMV: $35,146.5
Live Oak, FL
2017 Cadillac CT6Home Delivery
7
Price Drop, $1533
Previous Price: $2653322 Jul 2022

2017 Cadillac CT6 Luxury

Luxury 4dr Sedan (2.0L 4cyl Turbo 8A)

$25,000
Est. $339/mo
Excellent Deal
$5,485 Below market
RMV: $30,485
Hattiesburg, MS
2018 Cadillac CT6
17
Price Drop, $1000
Previous Price: $3599515 Jul 2022

2018 Cadillac CT6 Luxury

Luxury 4dr Sedan AWD (3.6L 6cyl 8A)

$34,995
Est. $475/mo
Excellent Deal
$7,644 Below market
RMV: $42,639
Oxnard, CA
2018 Cadillac CT6
20
Price Drop, $1000
Previous Price: $2596618 Jun 2022

2018 Cadillac CT6 Luxury

Luxury 4dr Sedan AWD (3.6L 6cyl 8A)

$24,966
Est. $338/mo
Excellent Deal
$5,105 Below market
RMV: $30,071
Temple Hills, MD
2017 Cadillac CT6Home Delivery
20

2017 Cadillac CT6 Luxury

Luxury 4dr Sedan AWD (3.0L 6cyl Turbo 8A)

$26,998
Est. $366/mo
Excellent Deal
$5,120 Below market
RMV: $32,118
Somerville, MA
2017 Cadillac CT6Home Delivery
2

2017 Cadillac CT6 Premium Luxury

Premium Luxury 4dr Sedan AWD (3.6L 6cyl 8A)

$30,000
Est. $407/mo
Excellent Deal
$4,995 Below market
RMV: $34,995
Fredericksburg, VA
2017 Cadillac CT6
3
Price Drop, $1435
Previous Price: $3142823 Jun 2022

2017 Cadillac CT6 Premium Luxury

Premium Luxury 4dr Sedan AWD (3.6L 6cyl 8A)

$29,993
Est. $407/mo
Excellent Deal
$5,002 Below market
RMV: $34,995
Newport, KY
2018 Cadillac CT6
8
Price Drop, $500
Previous Price: $2800021 Jul 2022

2018 Cadillac CT6 Premium Luxury

Premium Luxury 4dr Sedan AWD (3.0L 6cyl Turbo 8A)

$27,500
Est. $373/mo
Excellent Deal
$4,463 Below market
RMV: $31,963
Somerville, NJ
2017 Cadillac CT6Home Delivery
4
Price Drop, $500
Previous Price: $3499519 Jul 2022

2017 Cadillac CT6 Premium Luxury

Premium Luxury 4dr Sedan AWD (3.6L 6cyl 8A)

$34,495
Est. $468/mo
Excellent Deal
$4,783 Below market
RMV: $39,278
West Palm Beach, FL
The 2018 Cadillac CT6 provides the fuel efficiency figures of 20 mpg in the city, 28 mpg on the highway and 23 mpg combined. Though these numbers are respectable, the 2018 Cadillac CT6 still falls a little behind 2018 Lexus GS 450h hybrid as the latter possess better mileage figures.

The total fuel tank capacity of the car is 19.5 gallons which provides a total travel range of 266.0/399.0 - 429.0/585.0 miles. The overall range of the 2018 Cadillac CT6 is also less in comparison to some of its rivals due to lower efficiency but you won't have to visit the filling stations every now and then.

2018 Cadillac CT6 vs. Competitor's MPG and Range

Car NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
2018 Cadillac CT618 - 22 mpg26 - 30 mpg21 - 25 mpg19.5 gal.266.0/399.0 - 429.0/585.0 mi.
2018 Alfa Romeo Giulia23 - 24 mpg31 - 33 mpg26 - 27 mpg15.3 gal.351.9/474.3 - 370.0/573.5 mi.
2018 Audi A714 - 20 mpg24 - 29 mpg17 - 23 mpg19.8 gal.396.0/574.2 - 460.8/729.6 mi.
2018 BMW 6 Series16 - 20 mpg25 - 29 mpg19 - 23 mpg18.5 gal.296.0/462.5 - 354.0/477.9 mi.
2018 Cadillac CTS19 - 22 mpg27 - 30 mpg22 - 25 mpg19 gal.324.0/486.0 - 418.0/570.0 mi.
2018 Infiniti Q7016 - 18 mpg23 - 25 mpg18 - 21 mpg20 gal.320.00 / 460.00 - 360.00 / 500.00 mi.
2018 Jaguar XF20 - 25 mpg28 - 34 mpg23 - 28 mpg19.5 gal.-
2018 Mercedes-Benz C-Class23 - 24 mpg32 - 33 mpg26 - 27 mpg17.4 gal.400.20 / 556.80 - 417.60 / 574.20 mi.
2018 Audi A8 L16 - 19 mpg26 - 29 mpg19 - 22 mpg21.7 gal.347.2/564.2 - 475.2/693.0 mi.
2018 Audi S616 mpg24 mpg18 mpg19.8 gal.287.3/439.4 - 316.8/475.2 mi.
2018 BMW M317 mpg25 mpg20 mpg15.9 gal.344.0/464.4 mi.
2018 Genesis G8015 - 19 mpg23 - 27 mpg18 - 22 mpg20.3 gal.304.50 / 466.90 - 365.40 / 507.50 mi.
2018 Lexus LS 500h hybrid23 - 25 mpg31 - 33 mpg26 - 28 mpg22.2 gal.510.60 / 688.20 - 555.00 / 732.60 mi.
2018 Audi A616 - 25 mpg24 - 34 mpg18 - 28 mpg19.8 gal.354.2/515.2 - 495.0/673.2 mi.
2018 Audi S421 mpg30 mpg24 mpg15.3 gal.321.3/459.0 - 351.9/474.3 mi.
2018 BMW 5 Series20 - 24 mpg29 - 34 mpg23 - 27 mpg18 gal.360.0/522.0 - 414.0/594.0 mi.
2018 Cadillac XTS15 - 19 mpg21 - 28 mpg17 - 22 mpg19 - 20 gal.340.0/520.0 - 361.0/532.0 mi.
2018 Jaguar XE20 - 25 mpg29 - 34 mpg24 - 29 mpg16.6 gal.332.00 / 481.40 - 415.00 / 564.40 mi.
2018 Lexus LS 50018 - 19 mpg27 - 30 mpg21 - 23 mpg21.7 gal.390.60 / 585.90 - 412.30 / 651.00 mi.
2018 Lincoln Continental16 - 18 mpg24 - 27 mpg19 - 21 mpg19 gal.304.00 / 456.00 - 342.00 / 513.00 mi.
2018 Acura RLX20 mpg29 mpg23 mpg18.5 gal.370.00 / 536.50 - 422.8/483.2 mi.
2018 Audi RS 319 mpg28 mpg22 mpg14.5 gal.261.8/476.0 mi.
2018 Cadillac ATS-V16 mpg23 mpg19 mpg16 gal.350.0/462.0 mi.
2018 Genesis G9015 - 17 mpg23 - 24 mpg18 - 20 mpg21.9 gal.319.0/464.0 - 372.3/525.6 mi.
2018 Lexus GS 450h hybrid29 mpg34 mpg31 mpg17.4 gal.504.60 / 591.60 mi.
2018 Maserati Ghibli17 mpg24 mpg19 mpg21.1 gal.358.70 / 506.40 mi.

More from Cadillac CT6

Find a used Cadillac CT6 for under $16000 | Check out price savings and popular options here!

2018 Cadillac CT6 Exclusive Interior and Exterior Pictures | View latest Pictures

2017 Cadillac CT6 MPG and Range

Trim NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
4dr Sedan (2.0L 4cyl Turbo 8A)22 mpg30 mpg25 mpg19.5 gal.429.00 / 585.00 mi.
4dr Sedan AWD (3.6L 6cyl 8A)18 mpg27 mpg21 mpg19.5 gal.351.00 / 526.50 mi.
Luxury 4dr Sedan (2.0L 4cyl Turbo 8A)22 mpg30 mpg25 mpg19.5 gal.429.00 / 585.00 mi.
Luxury 4dr Sedan AWD (3.0L 6cyl Turbo 8A)18 mpg26 mpg21 mpg19.5 gal.351.00 / 507.00 mi.
Luxury 4dr Sedan AWD (3.6L 6cyl 8A)18 mpg27 mpg21 mpg19.5 gal.351.00 / 526.50 mi.
Platinum 4dr Sedan AWD (3.0L 6cyl Turbo 8A)18 mpg26 mpg21 mpg19.5 gal.351.00 / 507.00 mi.
Platinum 4dr Sedan AWD (3.6L 6cyl 8A)18 mpg27 mpg21 mpg19.5 gal.351.00 / 526.50 mi.
Premium Luxury 4dr Sedan AWD (3.0L 6cyl Turbo 8A)18 mpg26 mpg21 mpg19.5 gal.351.00 / 507.00 mi.
Premium Luxury 4dr Sedan AWD (3.6L 6cyl 8A)18 mpg27 mpg21 mpg19.5 gal.351.00 / 526.50 mi.

2017 Cadillac CT6 vs. Competitor's MPG and Range

Car NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
2017 Acura RLX20 mpg30 mpg23 mpg18.5 gal.370.00 / 555.00 mi.
2017 Audi RS 319 mpg28 mpg23 mpg14.5 gal.275.50 / 406.00 mi.
2017 Cadillac ATS-V 17 (2016) mpg23 mpg19 mpg16 gal.272.00 / 368.00 mi.
2017 Cadillac CT6 plug-in hybrid Sedan26 mpg-26 mpg15.6 gal.-
2017 Genesis G9015 - 17 mpg23 - 24 mpg18 - 20 mpg21.9 gal.328.50 / 503.70 - 372.30 / 525.60 mi.
2017 Lexus GS 450h hybrid29 mpg34 mpg31 mpg17.4 gal.504.60 / 591.60 mi.
2017 Lexus GS 200t22 mpg32 mpg26 mpg17.4 gal.382.80 / 556.80 mi.
2017 Maserati Ghibli17 mpg24 mpg19 mpg21.1 gal.-
2017 Mercedes-Benz AMG E 4318 mpg25 mpg21 mpg21.1 gal.428.40 / 595.00 mi.
2017 Alfa Romeo Giulia Quadrifoglio Sedan17 mpg24 mpg20 mpg15.3 gal.260.10 / 367.20 mi.
2017 Audi A715 - 21 mpg21 - 29 mpg18 - 24 mpg19.8 gal.415.80 / 574.20 mi.
2017 BMW 6 Series15 - 20 mpg24 - 29 mpg18 - 23 mpg18.5 gal.277.50 / 444.00 - 370.00 / 536.50 mi.
2017 Cadillac CT618 - 22 mpg26 - 30 mpg21 - 25 mpg19.5 gal.351.00 / 507.00 - 429.00 / 585.00 mi.
2017 Cadillac CTS V-Sport Sedan16 mpg24 mpg18 mpg19 gal.304.00 / 456.00 mi.
2017 Infiniti Q7016 - 18 mpg23 - 25 mpg18 - 21 mpg20 gal.320.00 / 460.00 - 360.00 / 500.00 mi.
2017 Jaguar XF20 mpg28 - 29 mpg23 mpg19.5 gal.390.00 / 546.00 mi.
2017 Lexus GS 35019 - 20 mpg26 - 28 mpg22 - 23 mpg17.4 gal.330.60 / 452.40 - 348.00 / 487.20 mi.
2017 Mercedes-Benz C-Class24 mpg31 - 34 mpg27 - 28 mpg17.4 gal.417.60 / 539.40 mi.
2017 Alfa Romeo Giulia23 - 24 mpg31 - 33 mpg26 - 27 mpg15.3 gal.-
2017 Audi A8 L15 - 19 mpg21 - 29 mpg18 - 22 mpg21.7 gal.390.60 / 629.30 - 412.30 / 629.30 mi.
2017 BMW M317 mpg26 mpg20 mpg15.8 gal.270.30 / 413.40 mi.
2017 Cadillac CTS19 - 22 mpg27 - 30 mpg22 - 25 mpg19 gal.361.00 / 513.00 - 418.00 / 570.00 mi.
2017 Infiniti Q70 hybrid Sedan28 mpg33 mpg30 mpg17.8 gal.498.40 / 587.40 mi.
2017 Mercedes-Benz E-Class22 mpg29 - 30 mpg24 - 25 mpg17.4 gal.382.80 / 504.60 mi.
2017 Audi A618 - 24 mpg24 - 35 mpg21 - 28 mpg19.8 gal.415.80 / 574.20 - 475.20 / 673.20 mi.
2017 BMW 5 Series20 - 24 mpg29 - 34 mpg23 - 27 mpg18 gal.360.00 / 522.00 - 432.00 / 612.00 mi.
2017 Cadillac XTS15 - 18 mpg21 - 28 mpg17 - 22 mpg18.5 - 20 gal.285.00 / 399.00 - 342.00 / 532.00 mi.
2017 Jaguar XE20 - 21 mpg29 - 30 mpg23 - 24 mpg16.6 - 18.5 gal.332.00 / 481.40 - 348.60 / 498.00 mi.
2017 Lincoln Continental16 - 18 mpg24 - 27 mpg19 - 21 mpg19 gal.304.00 / 456.00 - 342.00 / 513.00 mi.

2016 Cadillac CT6 MPG and Range

Trim NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
Platinum 4dr Sedan AWD (3.0L 6cyl Turbo 8A)18 mpg26 mpg21 mpg19.5 gal.351.00 / 507.00 mi.
Platinum 4dr Sedan AWD (3.6L 6cyl 8A)18 mpg27 mpg22 mpg19.5 gal.351.00 / 526.50 mi.
Premium Luxury 4dr Sedan AWD (3.0L 6cyl Turbo 8A)18 mpg26 mpg21 mpg19.5 gal.351.00 / 507.00 mi.
Luxury 4dr Sedan AWD (3.0L 6cyl Turbo 8A)18 mpg26 mpg21 mpg19.5 gal.351.00 / 507.00 mi.
Premium Luxury 4dr Sedan AWD (3.6L 6cyl 8A)18 mpg27 mpg22 mpg19.5 gal.351.00 / 526.50 mi.
Luxury 4dr Sedan AWD (3.6L 6cyl 8A)18 mpg27 mpg22 mpg19.5 gal.351.00 / 526.50 mi.
Luxury 4dr Sedan (2.0L 4cyl Turbo 8A)22 mpg31 mpg25 mpg19.5 gal.429.00 / 604.50 mi.
4dr Sedan AWD (3.6L 6cyl 8A)18 mpg27 mpg22 mpg19.5 gal.351.00 / 526.50 mi.
4dr Sedan (2.0L 4cyl Turbo 8A)22 mpg31 mpg25 mpg19.5 gal.358.70 / 569.70 - 448.80 / 712.80 mi.

2016 Cadillac CT6 vs. Competitor's MPG and Range

Car NameMPG CityMPG HighwayMPG CombinedFuel Tank CapacityRange in Miles
2016 BMW 5 Series16 - 23 mpg25 - 34 mpg19 - 27 mpg18.5 gal.296.00 / 462.50 - 425.50 / 629.00 mi.
2016 Acura RLX20 mpg31 mpg24 mpg18.5 gal.370.00 / 573.50 mi.
2016 Lincoln MKS16 - 17 mpg24 - 26 mpg19 - 20 mpg19 gal.304.00 / 456.00 - 323.00 / 494.00 mi.
2016 Mercedes-Benz S-Class14 - 17 mpg20 - 26 mpg16 - 20 mpg21.1 - 21.9 gal.295.40 / 443.10 - 358.70 / 548.60 mi.
2016 Cadillac CT618 - 22 mpg26 - 31 mpg21 - 25 mpg19.5 gal.351.00 / 507.00 - 429.00 / 604.50 mi.
2016 Kia K90015 - 17 mpg23 - 26 mpg18 - 20 mpg19.8 gal.297.00 / 455.40 - 336.60 / 514.80 mi.
2016 Maserati Quattroporte16 mpg23 mpg18 mpg21.1 gal.337.60 / 485.30 mi.
2016 Audi A8 L14 - 19 mpg22 - 29 mpg17 - 22 mpg21.7 - 23.8 gal.303.80 / 477.40 - 412.30 / 629.30 mi.
2016 BMW 7 Series16 - 21 mpg25 - 29 mpg19 - 24 mpg20.6 gal.329.60 / 515.00 - 432.60 / 597.40 mi.
2016 Jaguar XJ15 - 18 mpg23 - 27 mpg18 - 21 mpg21.7 gal.316.50 / 485.30 - 379.80 / 569.70 mi.
2016 Mercedes-Benz CLS-Class17 - 20 mpg25 - 30 mpg20 - 24 mpg21.1 gal.358.70 / 527.50 - 422.00 / 633.00 mi.
2016 Porsche Panamera15 - 18 mpg24 - 28 mpg18 - 22 mpg21.1 - 26.4 gal.358.70 / 569.70 - 448.80 / 712.80 mi.

Important 2018 Cadillac CT6 Links: