Cadillac CT6
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Engine family
Cadillac CT6 3.6L six-cylinder
The LGX is the most common engine code the VIN decodes to on the 3.6L six-cylinder configurations below; hybrid variants of the same displacement carry their own code. We decode it on 11,708 VINs across 19 factory builds, and 343 listings are reported active. The configuration price reference is $21,000.
- Cylinders
- 6
- Induction
- Naturally aspirated
- Fuel
- Gasoline
- Fitted
- 2016–2020
- Drive
- AWD
- Gearboxes
- Automatic
◷ Updated October 8, 2026 ▤ National asking prices, refreshed nightly
The price reference is the median of configuration medians, not the median of all active cars. Each configuration has equal weight. Configurations with at least 3 priced listings are used when available; otherwise the reference uses the configurations with a recorded price. Model years, mileage and condition vary. Open a model-year report below for its asking prices across all engines.
Which CT6 years got a 3.6L 6-cyl engine
Every model year this engine was fitted to, newest first. The bar is how much of the family's VIN volume sits in that year — long bars are the years this engine was everywhere.
VIN counts come from our decode of the model's build patterns, not from live listings. A year link opens the full CT6 report for that year — every engine of the model, not just this one.
19 factory configurations with this engine
Each one is a distinct build as the VIN decodes it — trim, body, gearbox and equipment. Open a build sheet for its full spec and the VINs recorded on it.
2020
2 builds2019
3 builds2018
6 builds2017
4 builds2016
3 buildsShowing the 18 most-built configurations of 19. Every 2020 CT6 build →
The 3.6L 6-cyl CT6: common questions
Which CT6 years have the 3.6L 6-cyl?
2016–2020, without a break — 5 model years in our VIN decode, across 19 factory configurations and 11,708 VINs.
What does a 3.6L 6-cyl CT6 cost?
$21,000 is a configuration price reference: the median of configuration medians, with each priced configuration weighted equally. It is not a listing-level median or a valuation of an individual car. The year-by-year ladder shows VIN and inventory counts; its links open model-year price reports covering all engines.
What is the engine code, and does it matter?
LGX — the code the VIN decodes to on the configurations on this page. It matters when you order parts or read a service history: the same displacement badge on another model can be a different code with different outputs.
3.6L 6-cyl CT6 on the market
Individual vehicles carrying this engine, each with its own listing-history page. The sample is pinned to fixed VIN buckets, so it does not reshuffle day to day.