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Cadillac CT6: one generation, engines and trims
The Cadillac CT6 is a large luxury sedan, produced from 2016 to 2020 as Cadillac's flagship. We look at the engines and trims on offer, what sets the CT6 apart from other luxury sedans, and what you need to check before buying a used example in Lithuania.
CT6 in brief
The CT6 was designed to compete with the BMW 7 Series, Mercedes-Benz S-Class, and Audi A8. Part of its body is made from aluminium, making the car lighter than you might expect from a sedan of this size.
The CT6 is rare in Lithuania: most cars here arrived as imports, so before buying, find out which market it came from and what equipment it has.
Which trim to choose
The model was produced in one generation, which was updated during production. Your choice mainly depends on the engine and equipment: from the more economical 2.0-litre turbo to the powerful 3.0-litre twin-turbo V6.
Most buyers choose between the 3.6 V6 and the 3.0 Twin Turbo. The former is more refined and simpler, the latter is very powerful but more expensive to buy and maintain.
Engines and transmissions
Three petrol engines are offered: the 2.0 turbo (around 265hp), the 3.6 V6 (around 335hp), and the 3.0 Twin Turbo V6 (around 400hp). All-wheel drive is most common in the more powerful versions.
The transmission for all versions is an automatic (8-speed).
Due to its large size and powerful engines, the CT6 doesn't offer great fuel economy.
What to check when buying a used CT6
First and foremost — origin and documents. An imported car should have a clear history, as repairs after an accident can be expensive due to the aluminium construction.
Test the gearbox and all-wheel drive: shifts should be smooth. Check that the engine doesn't smoke, doesn't rattle, and there are no oil leaks.
In the cabin, check the electronics: the screen, navigation, cameras, seat adjustment, and air conditioning. Parts for such a rare car might take longer to find.
Versions
Trim names vary by market, and in Lithuania, most cars are imported; therefore, we list versions by engine.
2.0 Turbo
2016–2020 modelsThe simplest and most economical version.
- 2.0-litre turbo engine, around 265 hp
- Automatic 8-speed gearbox
- Often — rear-wheel drive
3.6 V6
2016–2020 modelsA popular version with an atmospheric V6.
- 3.6-litre V6, around 335 hp
- Often — all-wheel drive
- Generous comfort equipment
3.0 Twin Turbo V6
2016–2020 modelsThe most powerful version.
- 3.0-litre V6 with twin turbos, around 400 hp
- All-wheel drive
- Often — active rear-wheel drive
Comparing versions
| 2.0 Turbo | 3.6 V6 | 3.0 Twin Turbo V6 | |
|---|---|---|---|
| Who it's for | For relaxed, economical driving | For a good balance of power and simplicity | For maximum aggression |
| Rim sizes (most often) | 18 in. | 18–19 in. | 19–20 in. |
| Transmission | Often rear-wheel drive | Rear or all-wheel drive | All wheels |
| Engine | 2.0 turbo, around 265 hp | 3.6 V6, around 335 hp | 3.0 TT V6, around 400 hp |
| Price in the used market (relatively) | Mid-range | Mid-range | High-end |
For most buyers, the best choice is the 3.6 V6 with all-wheel drive. Opt for the 3.0 Twin Turbo only if maximum performance is crucial and you're prepared for higher costs.
Pros
- Spacious, comfortable and luxurious interior
- Lighter than other similarly sized sedans
- Powerful and smooth V6 engines
- Rare, distinctive choice
Cons
- High fuel consumption
- Repairs after an accident can be expensive
- The choice of parts and experienced services is limited
Frequently asked questions
Is the CT6 officially sold in Lithuania?
Rarely, so most cars are imported. Before buying, check its origin, documents, and equipment.
Which CT6 engine is the best?
For most, the 3.6 V6 is the way to go: powerful and relatively straightforward. The 3.0 Twin Turbo is for those who prioritise performance.
Is the CT6 cheap to maintain?
No, it's a large luxury car with complex technology. It's worth finding out in advance where you can service it.
Updated 2026-10-17 · Trim levels and equipment vary by market and model year — check the equipment of the specific car. · Translated automatically
