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2020 Cadillac XT6 Premium Luxury AWD 3.6L
Shown: 2020 Cadillac XT6 Premium Luxury AWD 3.6L. Photo: Kevauto, CC BY-SA 4.0, via Wikimedia Commons
  • Gas
  • Small SUVs
  • MY2020–2025

Cadillac XT6 MPG & Fuel Cost by Year

6 model years · 2020–2025

23 MPG
Combined
21 MPG
City
27 MPG
Highway
Annual cost · MY2025 XT6 2.0L 4-cyl turbo FWD
$3,490

15,000 mi/yr · premium gasoline $5.36/gal (U.S. average, Sep 2026)

All Cadillac models

Cadillac XT6 fuel economy at a glance

EPA has rated the Cadillac XT6 for 6 model years, 2020 to 2025. Across those years its combined rating runs 20–23 MPG. The latest model year, 2025, has 4 configurations rated 20–23 MPG combined and costing $3,070–$3,490 a year to fuel at premium gasoline $5.36/gal (U.S. average, Sep 2026). The most efficient configuration on record since 2020 is the 2025 XT6 2.0L 4-cyl turbo FWD, at 23 MPG.

Cadillac XT6 MPG by year

202224 20202025 Gas 202224 20202025 Gas
Combined MPG: the line is the most efficient configuration, the shaded band reaches down to the least efficient. Dotted lines mark new generations.
Cadillac XT6: combined fuel economy and annual fuel cost for each model year, grouped by generation
Year Gas (MPG) $/yr
2020-2025 (2020) Generation page
2025 20–23 $3,070–$3,490
2024 21–23 $3,070–$3,490
2023 21–23 $3,080–$3,490
2022 21–23 $3,080–$3,490
2021 21–23 $3,070–$3,490
2020 20 $3,210–$3,260

Costs use the current EIA price set and 15,000 miles a year for every year, so years are comparable. Green marks the best year for each powertrain.

Cadillac XT6 generations

1 generations between 2020 and 2025. Open one for the table of every model year and configuration.

2020 Cadillac XT6 Premium Luxury AWD 3.6L

2020-2025 Cadillac XT6 (2020)

20–23 MPG · $3,070–$3,490/yr

2025 powertrain options

Gas · 2.0L, 3.6L
Combined
20–23 MPG
Per year
$3,070–$3,490
See gas configurations
EPA ratings: fueleconomy.gov file of Sep 29, 2026 · premium gasoline $5.36/gal (U.S. average, Sep 2026) · 15,000 mi/yr, 55% city / 45% highway · How we calculate

Frequently asked questions

What is the Cadillac XT6's gas mileage by year?

EPA combined ratings for the Cadillac XT6 run 20–23 MPG across model years 2020 to 2025. The latest year, 2025, is rated 20–23 MPG.

Which Cadillac XT6 model year has the best gas mileage?

The 2025 Cadillac XT6 XT6 2.0L 4-cyl turbo FWD has the highest combined rating since 2020, at 23 MPG.

How much does a Cadillac XT6 cost to fuel per year?

For MY2025, EPA-rated configurations cost $3,070–$3,490 a year to fuel, driving 15,000 miles at premium gasoline $5.36/gal (U.S. average, Sep 2026). The most efficient one costs $3,490.

Has the Cadillac XT6's fuel economy improved over time?

Yes. The most efficient configuration moved from 20 MPG in 2020 to 23 MPG in 2025, 3 MPG more.