2018 head-to-head · Compact Car
2018 Cadillac ATS vs Mercedes-Benz CLA-Class
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 $3.10/gal regular gas and $3.95/gal premium gas, it costs about $1,938 a year to fuel (24 MPG), versus $2,043 for the 2018 Mercedes-Benz CLA-Class (29 MPG). That's roughly $106 a year, or about $528 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 ATS
- Mercedes-Benz CLA-Class
Side by side
| Cadillac ATS | Mercedes-Benz CLA-Class | |
|---|---|---|
| $1,938 | Your annual fuel cost | $2,043 |
| 24 MPG | Combined efficiency | 29 MPG |
| 20 MPG | City | 24 MPG |
| 30 MPG | Highway | 37 MPG |
| 91 cu ft | Passenger volume | 88 cu ft |
| 10 cu ft | Cargo volume | 13 cu ft |
| 376 g/mi | Tailpipe CO₂ (g/mi) | 310 g/mi |
| 5/10 | EPA fuel economy score | 6/10 |
| 5/10 | EPA greenhouse gas score | 6/10 |
| Gas | Powertrain | Gas |
| Regular gasoline | Fuel | Premium gasoline |
| 3.6L 6-cyl | Engine / motor | 2.0L 4-cyl turbo |
| 8-speed automatic | Transmission | 7-speed dual-clutch |
| RWD | Drivetrain | FWD |
✓ 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 ATS vs Mercedes-Benz CLA-Class across model years
- Cadillac ATS
- Mercedes-Benz CLA-Class
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 passenger space (91 vs. 88 cu ft); the Mercedes-Benz CLA-Class has more cargo space (13 vs. 10 cu ft).
Among 44 2018 compact cars, the Cadillac ATS ranks 29th and the Mercedes-Benz CLA-Class 32nd for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2018 Cadillac ATS or the 2018 Mercedes-Benz CLA-Class?
Measured by cost to drive, the Cadillac ATS. The Cadillac ATS is rated 24 MPG combined and the Mercedes-Benz CLA-Class 29 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2018 Cadillac ATS vs. the Mercedes-Benz CLA-Class per year?
At 15,000 miles a year with $3.10/gal regular gas and $3.95/gal premium gas, about $1,938 for the Cadillac ATS and $2,043 for the Mercedes-Benz CLA-Class.
Which has more cargo space?
The Mercedes-Benz CLA-Class, with 13 cu ft of luggage volume versus 10 cu ft (EPA interior volume index).
Cadillac ATS vs Mercedes-Benz CLA-Class in other years
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