2018 head-to-head · Compact Car
2018 BMW 4 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 2018 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 $1,938 a year to fuel (24 MPG), versus $2,194 for the 2018 BMW 4 Series (27 MPG). That's roughly $257 a year, or about $1,285 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 4 Series
- Cadillac ATS
Side by side
| BMW 4 Series | Cadillac ATS | |
|---|---|---|
| $2,194 | Your annual fuel cost | $1,938 |
| 27 MPG | Combined efficiency | 24 MPG |
| 24 MPG | City | 20 MPG |
| 34 MPG | Highway | 30 MPG |
| 90 cu ft | Passenger volume | 91 cu ft |
| 9 cu ft | Cargo volume | 10 cu ft |
| 324 g/mi | Tailpipe CO₂ (g/mi) | 376 g/mi |
| 6/10 | EPA fuel economy score | 5/10 |
| 6/10 | EPA greenhouse gas score | 5/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Regular gasoline |
| 2.0L 4-cyl turbo | Engine / motor | 3.6L 6-cyl |
| 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 4 Series vs Cadillac ATS across model years
- BMW 4 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 Cadillac ATS has more cargo space (10 vs. 9 cu ft).
Among 44 2018 compact cars, the BMW 4 Series ranks 35th and the Cadillac ATS 29th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2018 BMW 4 Series or the 2018 Cadillac ATS?
Measured by cost to drive, the Cadillac ATS. The BMW 4 Series is rated 27 MPG combined and the Cadillac ATS 24 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2018 BMW 4 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 $2,194 for the BMW 4 Series and $1,938 for the Cadillac ATS.
Which has more cargo space?
The Cadillac ATS, with 10 cu ft of luggage volume versus 9 cu ft (EPA interior volume index).
BMW 4 Series vs Cadillac ATS in other years
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