The official data lists 33 versions of the Cadillac CT6 (2016–2020), in the European Union, the United Kingdom, the United States, and Canada. Each market publishes its own figures, measured on its own test procedure.
At a glance
Years in the data
2016–2020
Markets
European Union, United Kingdom, United States, Canada
Engines
2.0 L to 4.2 L
Power
307 kW (417 PS)
Fuels
Petrol, Plug-in hybrid
Lowest consumption (United States)
8.4 L/100 km (EPA)
Lowest consumption (Canada)
9.5 L/100 km (5-cycle)
Lowest consumption (United Kingdom)
9.6 L/100 km (NEDC)
Plug-in hybrid, weighted (United States)
9.0 L/100 km (EPA)
Plug-in hybrid, weighted (Canada)
9.2 L/100 km (5-cycle)
New registrations in the EU
398
What is the Cadillac CT6?
The CT6 was a large luxury sedan at the top of Cadillac’s sedan range. Its mixed-material structure and aluminium exterior panels helped give this spacious four-door a lighter construction. The first generation ran from 2016 to 2020.
Engines and power
Engine choices varied by market. US and Canadian versions included petrol engines from 2.0 to 4.2 litres, as well as a plug-in hybrid. EU figures list a 3.0-litre petrol engine producing 307 kW (417 PS), while UK figures cover a 3.0-litre petrol version.
How economical is the Cadillac CT6?
The EPA gives the CT6 a best combined rating of 28 MPG and a lowest listed petrol consumption of 8.4 L/100 km. Its official weighted plug-in hybrid figure is 9 L/100 km, assuming some driving is electric. Canada lists 9.5 L/100 km for petrol and a weighted 9.2 L/100 km for the plug-in hybrid on the NRCan 5-cycle test. The UK figure of 9.6 L/100 km uses NEDC. These procedures differ, so ratings are best read within their own markets.
Where was the Cadillac CT6 sold?
The CT6 appears in EU registration figures from 2016 to 2019, UK figures for 2018, and US and Canadian figures from 2016 to 2020. The EU recorded 398 registrations from 2016 to 2019.
Questions and answers
What is the Cadillac CT6?
It is a large luxury sedan that sat at the top of Cadillac’s sedan range.
Did the CT6 have a plug-in hybrid?
Yes. US and Canadian versions included a plug-in hybrid alongside petrol models.
What was the CT6’s EU-listed engine and power?
The EU figures list a 3.0-litre petrol engine producing 307 kW (417 PS).
New cars registered in the EU (plus Norway and Iceland), from the European Environment Agency. Figures on the NEDC procedure until 2020 and on WLTP from 2021; versions are grouped by engine and power, with their number of registrations.
Years and version
Engine
Power
Fuel
CO₂
EU registrations
2019
3.0 L
307 kW (417 PS)
Petrol
221 g/km
44
2018
3.0 L
307 kW (417 PS)
Petrol
222 g/km
140
2017
3.0 L
307 kW (417 PS)
Petrol
221 g/km
140
2016
3.0 L
307 kW (417 PS)
Petrol
224 g/km
74
United Kingdom 2 versions
New cars on sale in the UK, from the Vehicle Certification Agency. NEDC figures until 2018 and WLTP figures after; years are the editions a version appeared in.
Years and version
Engine
Fuel
Gearbox
Consumption (combined)
CO₂
20183.0L V6 AWD Luxury
3.0 L
Petrol
8-speed automatic
9.6 L/100 km NEDC
218 g/km
20183.0L V6 AWD Platinum
3.0 L
Petrol
8-speed automatic
9.8 L/100 km NEDC
223 g/km
United States 13 versions
Model years sold in the USA, from the EPA and the Department of Energy (fueleconomy.gov). MPG on the EPA test; litres per 100 km = 235.215 ÷ MPG.
Years and version
Engine
Fuel
Gearbox
Drive
Consumption (combined)
CO₂
2019–2020SIDI
3.6 L
Petrol
10-speed automatic
All-wheel drive
21 MPG (11.2 L/100 km) EPA
261 g/km
2019–2020SIDI
4.2 L
Petrol
10-speed automatic
All-wheel drive
17 MPG (13.8 L/100 km) EPA
324 g/km
2019SIDI
2.0 L
Petrol
10-speed automatic
Rear-wheel drive
28 MPG (8.4 L/100 km) EPA
197 g/km
2019SIDI
3.0 L
Petrol
10-speed automatic
All-wheel drive
21 MPG (11.2 L/100 km) EPA
267 g/km
2018SIDI
2.0 L
Petrol
8-speed automatic
Rear-wheel drive
25 MPG (9.4 L/100 km) EPA
224 g/km
2018SIDI; PHEV
2.0 L
Plug-in hybrid
Continuously variable (CVT)
Rear-wheel drive
25 MPG (9.4 L/100 km) EPA
89 g/km
2016–2018SIDI
3.0 L
Petrol
8-speed automatic
All-wheel drive
21 MPG (11.2 L/100 km) EPA
263 g/km
2018SIDI
3.6 L
Petrol
8-speed automatic
All-wheel drive
21 MPG (11.2 L/100 km) EPA
258 g/km
2017SIDI
2.0 L
Petrol
8-speed automatic
Rear-wheel drive
25 MPG (9.4 L/100 km) EPA
223 g/km
2017SIDI; PHEV
2.0 L
Plug-in hybrid
Continuously variable (CVT)
Rear-wheel drive
26 MPG (9.0 L/100 km) EPA
89 g/km
2017SIDI
3.6 L
Petrol
8-speed automatic
All-wheel drive
21 MPG (11.2 L/100 km) EPA
259 g/km
2016SIDI
2.0 L
Petrol
8-speed automatic
Rear-wheel drive
25 MPG (9.4 L/100 km) EPA
222 g/km
2016SIDI
3.6 L
Petrol
8-speed automatic
All-wheel drive
21 MPG (11.2 L/100 km) EPA
257 g/km
Canada 14 versions
Model years sold in Canada, from Natural Resources Canada fuel consumption ratings (5-cycle test).
Years and version
Engine
Fuel
Gearbox
Consumption (combined)
CO₂
Electric range
2020Full-size
3.6 L
Petrol
10-speed automatic
11.0 L/100 km 5-cycle
259 g/km
–
2019–2020Full-size
4.2 L
Petrol
10-speed automatic
13.8 L/100 km 5-cycle
324 g/km
–
2019Full-size
3.0 L
Petrol
10-speed automatic
11.3 L/100 km 5-cycle
267 g/km
–
2019Full-size
3.6 L
Petrol
10-speed automatic
11.1 L/100 km 5-cycle
261 g/km
–
2018Mid-size
2.0 L
Plug-in hybrid
Continuously variable (CVT)
9.2 L/100 km 5-cycle
89 g/km
50 km
2018Full-size
2.0 L
Petrol
8-speed automatic
9.5 L/100 km 5-cycle
224 g/km
–
2017–2018Full-size
3.0 L
Petrol
8-speed automatic
11.2 L/100 km 5-cycle
263 g/km
–
2018Full-size
3.6 L
Petrol
8-speed automatic
11.1 L/100 km 5-cycle
261 g/km
–
2017Mid-size
2.0 L
Plug-in hybrid
Continuously variable (CVT)
9.2 L/100 km 5-cycle
89 g/km
50 km
2017Full-size
2.0 L
Petrol
8-speed automatic
9.5 L/100 km 5-cycle
223 g/km
–
2017Full-size
3.6 L
Petrol
8-speed automatic
11.0 L/100 km 5-cycle
259 g/km
–
2016Full-size
2.0 L
Petrol
8-speed automatic
9.5 L/100 km 5-cycle
222 g/km
–
2016Full-size
3.0 L
Petrol
8-speed automatic
11.2 L/100 km 5-cycle
263 g/km
–
2016Full-size
3.6 L
Petrol
8-speed automatic
11.0 L/100 km 5-cycle
257 g/km
–
Official figures are measured on standard test procedures and differ between markets. Your consumption depends on how, where and in what conditions you drive.
