2015 head-to-head · Compact Car
2015 BMW 3 Series vs Cadillac ATS
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 2015 Cadillac ATS is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas and $3.10/gal regular gas, it costs about $1,860 a year to fuel (25 MPG), versus $2,116 for the 2015 BMW 3 Series (28 MPG). That's roughly $256 a year, or about $1,280 over five years.
Your numbers
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Fuel cost over 10 years
- BMW 3 Series
- Cadillac ATS
Side by side
| BMW 3 Series | Cadillac ATS | |
|---|---|---|
| $2,116 | Your annual fuel cost | $1,860 |
| 28 MPG | Combined efficiency | 25 MPG |
| 23 MPG | City | 21 MPG |
| 35 MPG | Highway | 32 MPG |
| 96 cu ft | Passenger volume | 91 cu ft |
| 13 cu ft | Cargo volume | 10 cu ft |
| 324 g/mi | Tailpipe CO₂ (g/mi) | 356 g/mi |
| 7/10 | EPA fuel economy score | 6/10 |
| 7/10 | EPA greenhouse gas score | 6/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Regular gasoline |
| 2.0L 4-cyl turbo | Engine / motor | 2.5L 4-cyl |
| 8-speed automatic | Transmission | 6-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 3 Series vs Cadillac ATS across model years
- BMW 3 Series
- Cadillac ATS
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 3 Series has more passenger space (96 vs. 91 cu ft); the BMW 3 Series has more cargo space (13 vs. 10 cu ft).
Among 52 2015 compact cars, the BMW 3 Series ranks 38th and the Cadillac ATS 32nd for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2015 BMW 3 Series or the 2015 Cadillac ATS?
Measured by cost to drive, the Cadillac ATS. The BMW 3 Series is rated 28 MPG combined and the Cadillac ATS 25 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2015 BMW 3 Series vs. the Cadillac ATS per year?
At 15,000 miles a year with $3.95/gal premium gas and $3.10/gal regular gas, about $2,116 for the BMW 3 Series and $1,860 for the Cadillac ATS.
Which has more cargo space?
The BMW 3 Series, with 13 cu ft of luggage volume versus 10 cu ft (EPA interior volume index).
BMW 3 Series vs Cadillac ATS in other years
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