2025 head-to-head · Compact Car
2025 Cadillac CT4 vs Mercedes-Benz AMG GT
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
The 2025 Cadillac CT4 is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $2,279 a year to fuel (26 MPG), versus $3,485 for the 2025 Mercedes-Benz AMG GT (17 MPG). That's roughly $1,206 a year, or about $6,032 over five years.
Your numbers
Change these to match your driving and local prices. Every figure and chart on this page updates.
Fuel cost over 10 years
- Cadillac CT4
- Mercedes-Benz AMG GT
Side by side
| Cadillac CT4 | Mercedes-Benz AMG GT | |
|---|---|---|
| $2,279 | Your annual fuel cost | $3,485 |
| 26 MPG | Combined efficiency | 17 MPG |
| 22 MPG | City | 15 MPG |
| 32 MPG | Highway | 21 MPG |
| 90 cu ft | Passenger volume | 96 cu ft |
| 11 cu ft | Cargo volume | 13 cu ft |
| 345 g/mi | Tailpipe CO₂ (g/mi) | 512 g/mi |
| 5/10 | EPA fuel economy score | 3/10 |
| 5/10 | EPA greenhouse gas score | 3/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 2.0L 4-cyl turbo | Engine / motor | 4.0L 8-cyl turbo |
| 8-speed automatic | Transmission | 9-speed automatic |
| RWD | Drivetrain | AWD |
✓ marks the better value. EPA scores run 1–10 (10 is best). Volumes come from the EPA interior volume index and aren't published for every body style.
Cadillac CT4 vs Mercedes-Benz AMG GT across model years
- Cadillac CT4
- Mercedes-Benz AMG GT
Annual fuel cost of the most efficient configuration of each model year, at your prices. Click a point to open that year.
How they differ
Per EPA interior volume figures, the Mercedes-Benz AMG GT has more passenger space (96 vs. 90 cu ft); the Mercedes-Benz AMG GT has more cargo space (13 vs. 11 cu ft).
Among 26 2025 compact cars, the Cadillac CT4 ranks 18th and the Mercedes-Benz AMG GT 25th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2025 Cadillac CT4 or the 2025 Mercedes-Benz AMG GT?
Measured by cost to drive, the Cadillac CT4. The Cadillac CT4 is rated 26 MPG combined and the Mercedes-Benz AMG GT 17 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2025 Cadillac CT4 vs. the Mercedes-Benz AMG GT per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,279 for the Cadillac CT4 and $3,485 for the Mercedes-Benz AMG GT.
Which has more cargo space?
The Mercedes-Benz AMG GT, with 13 cu ft of luggage volume versus 11 cu ft (EPA interior volume index).
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