2021 head-to-head · Compact Car
2021 BMW M Hybrid vs Cadillac CT4
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 2021 Cadillac CT4 is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $2,194 a year to fuel (27 MPG), versus $2,279 for the 2021 BMW M Hybrid (26 MPG). That's roughly $84 a year, or about $422 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
- BMW M Hybrid
- Cadillac CT4
Side by side
| BMW M Hybrid | Cadillac CT4 | |
|---|---|---|
| $2,279 | Your annual fuel cost | $2,194 |
| 26 MPG | Combined efficiency | 27 MPG |
| 23 MPG | City | 23 MPG |
| 32 MPG | Highway | 34 MPG |
| 94 cu ft | Passenger volume | 90 cu ft |
| 13 cu ft | Cargo volume | 13 cu ft |
| 333 g/mi | Tailpipe CO₂ (g/mi) | 327 g/mi |
| 5/10 | EPA fuel economy score | 6/10 |
| 5/10 | EPA greenhouse gas score | 6/10 |
| Hybrid | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 3.0L 6-cyl turbo | Engine / motor | 2.0L 4-cyl turbo |
| 8-speed automatic | Transmission | 8-speed automatic |
| RWD | Drivetrain | RWD |
✓ 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.
BMW M Hybrid vs Cadillac CT4 across model years
- BMW M Hybrid
- Cadillac CT4
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 BMW M Hybrid has more passenger space (94 vs. 90 cu ft).
Among 37 2021 compact cars, the BMW M Hybrid ranks 27th and the Cadillac CT4 26th for lowest fuel cost.
The powertrains differ: the BMW M Hybrid is a full hybrid, while the Cadillac CT4 is a conventional gas model.
Frequently asked questions
Which is more fuel-efficient, the 2021 BMW M Hybrid or the 2021 Cadillac CT4?
Measured by cost to drive, the Cadillac CT4. The BMW M Hybrid is rated 26 MPG combined and the Cadillac CT4 27 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2021 BMW M Hybrid vs. the Cadillac CT4 per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,279 for the BMW M Hybrid and $2,194 for the Cadillac CT4.
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