Cadillac CT6 Gas Tank Size & Fuel Capacity by Year
15.6–19.5gal · 59–74 L
Across 4 model years (2017–2020), the Cadillac CT6 has used tanks from 15.6–19.5 gallons. The 2020 model holds 19.2 gallons.
Pick your model year
How the tank changed over the years
Cadillac CT6 tank size by generation
Model years with the same tank sizes, grouped. A change usually marks a new generation or a redesign.
Cadillac CT6 tank size by year
| Year | Tank | Liters | Best highway range | Trims |
|---|---|---|---|---|
| 2020 Cadillac CT6 | 19.2 gallons | 73 L | 518 mi | 3 |
| 2019 Cadillac CT6 | 19.5 gallons | 74 L | 663 mi | 7 |
| 2018 Cadillac CT6 | 15.6–19.5 gallons | 59–74 L | 585 mi | 10 |
| 2017 Cadillac CT6 | 15.6–19.5 gallons | 59–74 L | 585 mi | 10 |
Frequently asked questions
What size gas tank does the Cadillac CT6 have?
The 2020 Cadillac CT6 holds 19.2 gallons. Older years range from 15.6–19.5 gallons; the table has every year.
Has the tank size changed over the years?
Yes. The largest tank changed in 2020.