Cadillac CT6 Annual Fuel Cost
Running a 2020 Cadillac CT6 costs about $2,450 per year in fuel, based on 15,000 miles of driving at average U.S. fuel prices.
Latest model year (2020):
The Cadillac CT6 costs an estimated $2,950/year in fuel (420 g CO₂/mi).
Cadillac CT6 Fuel Cost — All Years
| Year | Trim | Engine | Fuel | MPG Comb. | Annual Cost | CO₂ (g/mi) | GHG Score |
|---|---|---|---|---|---|---|---|
| 2020Config 1 of 2 | Auto (S10), 6 cyl, 3.6 L | 6 3.6L | Regular Gasoline | 21 | $2,950 | 420 | 4 |
| 2020Config 2 of 2 | Auto (S10), 8 cyl, 4.2 L | 8 4.2L | Premium Gasoline | 17 | $4,450 | 521 | 3 |
| 2019Config 1 of 4 | Auto (S10), 4 cyl, 2.0 L | 4 2.0L | Premium Gasoline | 28 | $2,700 | 317 | 6 |
| 2019Config 2 of 4 | Auto (S10), 6 cyl, 3.0 L | 6 3.0L | Premium Gasoline | 21 | $3,600 | 429 | 4 |
| 2019Config 3 of 4 | Auto (S10), 6 cyl, 3.6 L | 6 3.6L | Regular Gasoline | 21 | $2,950 | 420 | 4 |
| 2019Config 4 of 4 | Auto (S10), 8 cyl, 4.2 L | 8 4.2L | Premium Gasoline | 17 | $4,450 | 521 | 3 |
| 2018Config 1 of 4 | Auto (S8), 4 cyl, 2.0 L | 4 2.0L | Premium Gasoline | 25 | $3,050 | 360 | 5 |
| 2018Config 2 of 4 | Auto (S8), 6 cyl, 3.0 L | 6 3.0L | Premium Gasoline | 21 | $3,600 | 424 | 4 |
| 2018Config 3 of 4 | Auto (S8), 6 cyl, 3.6 L | 6 3.6L | Regular Gasoline | 21 | $2,950 | 416 | 4 |
| 2018Config 4 of 4 | Auto (variable gear ratios), 4 cyl, 2.0 L | 4 2.0L | Premium Gasoline | 25 | $3,050 | 144 | 10 |
| 2017Config 1 of 4 | Auto (S8), 4 cyl, 2.0 L | 4 2.0L | Premium Gasoline | 25 | $3,050 | 359 | 5 |
| 2017Config 2 of 4 | Auto (S8), 6 cyl, 3.0 L | 6 3.0L | Premium Gasoline | 21 | $3,600 | 424 | 4 |
| 2017Config 3 of 4 | Auto (S8), 6 cyl, 3.6 L | 6 3.6L | Regular Gasoline | 21 | $2,950 | 417 | 4 |
| 2017Config 4 of 4 | Auto (variable gear ratios), 4 cyl, 2.0 L | 4 2.0L | Premium Gasoline | 26 | $2,900 | 144 | 10 |
| 2016Config 1 of 3 | Auto (S8), 4 cyl, 2.0 L | 4 2.0L | Regular Gasoline | 25 | $2,450 | 357 | 6 |
| 2016Config 2 of 3 | Auto (S8), 6 cyl, 3.0 L | 6 3.0L | Premium Gasoline | 21 | $3,600 | 424 | 5 |
| 2016Config 3 of 3 | Auto (S8), 6 cyl, 3.6 L | 6 3.6L | Regular Gasoline | 21 | $2,950 | 414 | 5 |
Data sourced from fueleconomy.gov (U.S. Department of Energy). MPG figures are EPA-tested. Fuel costs are estimates based on average fuel prices and 15,000 miles/year.
Cadillac CT6 data analysis
How Cadillac CT6 estimated annual fuel cost varies
Across 17 configurations recorded for the 2016 through 2020 Cadillac CT6, estimated annual fuel cost runs from $2,450 to $4,450. The strongest figure belongs to the 2016 Cadillac CT6 (Auto (S8), 4 cyl, 2.0 L) at $2,450, and the weakest to the 2019 car (Auto (S10), 8 cyl, 4.2 L) at $4,450 — a spread of 45%. A gap that wide means the model year and configuration you buy matter more than the nameplate does: quoting a single number for the Cadillac CT6 would be misleading.
What changed for 2020
Average estimated annual fuel cost for the 2020 Cadillac CT6 is $3,700, against $3,425 for the 2019 car — it rose by $275. Buyers who care most about this figure should look at the earlier model years in the table above before assuming newest is best.
How to read this Cadillac CT6 data
This page lists every 2016 through 2020 Cadillac CT6 record we hold for this measurement — 17 rows in total, one per configuration and model year rather than a single headline figure. Figures are published as the source agency records them: we do not round, average or interpolate missing years, and a year that is absent from the table is a year with no published measurement rather than a zero. Where a manufacturer offered several drivetrains or body styles in the same year, each appears on its own row, because those variants rarely share the same numbers.
Configurations behind these Cadillac CT6 numbers
The 2016 through 2020 Cadillac CT6 entries here cover variants including Auto (S10), 6 cyl, 3.6 L, Auto (S10), 8 cyl, 4.2 L, Auto (S10), 4 cyl, 2.0 L, Auto (S10), 6 cyl, 3.0 L, Auto (S8), 4 cyl, 2.0 L, Auto (S8), 6 cyl, 3.0 L, Auto (S8), 6 cyl, 3.6 L and Auto (variable gear ratios), 4 cyl, 2.0 L. 2019 is the busiest model year in the record with 4 separate measured configurations, which is why a single quoted estimated annual fuel cost figure for that year is rarely the one that matches the car in front of you. Match the row to the exact drivetrain, body style and engine on the window sticker or VIN before relying on the number, and use the comparison links below to see how those same configurations line up against rival models.
Where these Cadillac CT6 figures come from
Every value on this page is loaded from federal open data — EPA fuel economy submissions, NHTSA vehicle and crash-test records, and manufacturer specification filings — rather than dealer listings or copied editorial content. The Cadillac CT6 record refreshes as the agencies publish, which typically means new model-year rows appear in the autumn and crash-test results follow through the model year as vehicles are tested. Because certification data is filed per configuration, treat any single headline number for this vehicle with caution: the figure that applies to a specific car depends on its engine, drivetrain, body style and model year, all of which are listed separately above. If a number here disagrees with a brochure, the brochure is usually quoting the best available configuration rather than the one being sold.
Frequently Asked Questions About CT6 Fuel Cost
How much does it cost to fuel the Cadillac CT6?
The estimated annual fuel cost for the Cadillac CT6 is $2,450 per year, based on 15,000 miles of driving and average fuel prices. Costs vary by trim and engine.
How much CO₂ does the Cadillac CT6 produce?
The Cadillac CT6 produces approximately 357 grams of CO₂ per mile. Lower numbers mean fewer emissions. See the table for per-trim details.
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