Cadillac · Compact cars · Gasoline
Cadillac CT4: MPG and annual fuel cost, 2026
At 26 MPG combined, the Cadillac CT4 sits 8 MPG below the compact cars median of 34, which makes it 17th of 21 compact cars, in the bottom quarter.
- 26MPG combined17th of 21 in class
- $3,150a year in fuel17th of 21 in class
- 345g/mile CO2
Where it stands
Compared only with the gasoline models of its class it is 5th of 9 gasoline compact cars, in the upper half, ahead of 50% of the others. The median of that narrower group is 26 MPG, against 34 MPG for all compact cars together.
Across every class it is tied for 53rd of 180 gasoline models, in the upper half.
Cadillac has 8 models in the 2026 data. This one ranks 5th of them on combined rating, against a make median of 53.5 MPG.
In its class, just ahead of it is the Mercedes-Benz C-Class Hybrid at 29 MPG and just behind it is the Genesis G70 at 24 MPG.
Fuel cost and CO2
At 15,000 miles a year with 55% of them in the city, with premium gasoline at $5.48 per gallon, the annual fuel bill of the most efficient version is about $3,150. That is $1,200 more than the compact cars median of $1,950.
It emits 345 g of CO2 per mile from the tailpipe; the compact cars median is 265, a difference of 80 g/mile.
Rated versions
In the city the most efficient version is rated 22 and on the highway 32, 10 better on the open road. 8 versions are rated for 2026. The most efficient, CT4: 2.0 L, 4 cyl, Automatic (S8), RWD, gets 26 MPG; the least efficient listed, CT4 V: 3.6 L, 6 cyl, Manual 6-spd, RWD, gets 18 MPG, a gap of 8 MPG. With the file's assumptions that gap is worth about $1,400 a year in fuel.
| Version | Combined MPG | City MPG | Highway MPG | Annual fuel cost | CO2 g/mile |
|---|---|---|---|---|---|
| CT4: 2.0 L, 4 cyl, Automatic (S8), RWD | 26 | 22 | 32 | $3,150 | 345 |
| CT4 AWD: 2.0 L, 4 cyl, Automatic (S8), AWD | 25 | 21 | 31 | $3,300 | 357 |
| CT4: 2.7 L, 4 cyl, Automatic (S10), RWD | 25 | 21 | 31 | $3,300 | 356 |
| CT4 AWD: 2.7 L, 4 cyl, Automatic (S10), AWD | 24 | 21 | 29 | $3,400 | 371 |
| CT4 V AWD: 2.7 L, 4 cyl, Automatic (S10), AWD | 23 | 20 | 28 | $3,550 | 387 |
| CT4 V: 2.7 L, 4 cyl, Automatic (S10), RWD | 23 | 20 | 29 | $3,550 | 383 |
| CT4 V: 3.6 L, 6 cyl, Automatic (S10), RWD | 19 | 16 | 24 | $4,350 | 478 |
| CT4 V: 3.6 L, 6 cyl, Manual 6-spd, RWD | 18 | 15 | 23 | $4,550 | 493 |
Year by year
The Cadillac CT4 is in the data for 7 of the 8 model years from 2019 to 2026. Its best combined rating went from 27 in 2020 to 26 MPG in 2026, down 1 MPG. The number of rated versions grew from 6 to 8. Fuel cost for the best version is $3,150 in the latest data against $3,050 in 2020, although the file applies today's fuel prices to every model year, so that change comes from the rating, not from prices.
| Model year | Versions | Best MPG | Lowest MPG | Fuel cost | CO2 g/mi | Class median |
|---|---|---|---|---|---|---|
| 2026 | 8 | 26 | 18 | $3,150 | 345 | 34 |
| 2025 | 8 | 26 | 18 | $3,150 | 345 | 30.5 |
| 2024 | 8 | 26 | 18 | $3,150 | 345 | 30 |
| 2023 | 8 | 27 | 18 | $3,050 | 331 | 29 |
| 2022 | 8 | 27 | 18 | $3,050 | 331 | 30 |
| 2021 | 6 | 27 | 23 | $3,050 | 327 | 30 |
| 2020 | 6 | 27 | 23 | $3,050 | 327 | 30 |
Similar models
| Model | Powertrain | Combined MPG | Annual fuel cost | Model year |
|---|---|---|---|---|
| Genesis G70 | Gasoline | 24 | $3,400 | 2026 |
| Mercedes-Benz CLA-Class | Gasoline | 23 | $3,550 | 2026 |
| Volkswagen GLI | Gasoline | 29 | $2,300 | 2026 |
| Mercedes-Benz C-Class Hybrid | Hybrid | 29 | $2,850 | 2026 |
| Lexus IS | Gasoline | 22 | $3,750 | 2026 |
Compare and rank
Rankings: Compact cars, Gasoline, Cadillac, Gasoline compact cars.
Data: US EPA and DOE, as prepared in methods and data.