2025 head-to-head · Compact Car
2025 Cadillac CT4 vs Mercedes-Benz AMG GT Plug-in Hybrid
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 and 18¢/kWh electricity, it costs about $2,279 a year to fuel (26 MPG), versus $2,541 for the 2025 Mercedes-Benz AMG GT Plug-in Hybrid (28 MPGe + 19 MPG). That's roughly $262 a year, or about $1,311 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 Plug-in Hybrid
Side by side
| Cadillac CT4 | Mercedes-Benz AMG GT Plug-in Hybrid | |
|---|---|---|
| $2,279 | Your annual fuel cost | $2,541 |
| 26 MPG | Combined efficiency | 28 MPGe + 19 MPG |
| 22 MPG | City | 32 MPGe / 16 MPG |
| 32 MPG | Highway | 24 MPGe / 22 MPG |
| — | Electricity use (kWh/100 mi) | 42 kWh |
| — | Driving range | 360 mi |
| — | All-electric range | 11 mi |
| 90 cu ft | Passenger volume | 81 cu ft |
| 11 cu ft | Cargo volume | 11 cu ft |
| 345 g/mi | Tailpipe CO₂ (g/mi) | 397 g/mi |
| 5/10 | EPA fuel economy score | 4/10 |
| 5/10 | EPA greenhouse gas score | 5/10 |
| — | Charge time at 240V | 1.1 hrs |
| Gas | Powertrain | Plug-in hybrid |
| Premium gasoline | Fuel | Premium gas + electricity |
| 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 Plug-in Hybrid across model years
- Cadillac CT4
- Mercedes-Benz AMG GT Plug-in Hybrid
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 Cadillac CT4 has more passenger space (90 vs. 81 cu ft).
Among 26 2025 compact cars, the Cadillac CT4 ranks 18th and the Mercedes-Benz AMG GT Plug-in Hybrid 23rd for lowest fuel cost.
The powertrains differ: the Cadillac CT4 is a conventional gas model, while the Mercedes-Benz AMG GT Plug-in Hybrid is a plug-in hybrid.
Frequently asked questions
Which is more fuel-efficient, the 2025 Cadillac CT4 or the 2025 Mercedes-Benz AMG GT Plug-in Hybrid?
Measured by cost to drive, the Cadillac CT4. The Cadillac CT4 is rated 26 MPG combined and the Mercedes-Benz AMG GT Plug-in Hybrid 28 MPGe + 19 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2025 Cadillac CT4 vs. the Mercedes-Benz AMG GT Plug-in Hybrid per year?
At 15,000 miles a year with $3.95/gal premium gas and 18¢/kWh electricity, about $2,279 for the Cadillac CT4 and $2,541 for the Mercedes-Benz AMG GT Plug-in Hybrid.
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