2018 head-to-head · Compact Car

2018 Acura ILX 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.

Swap sides
✓ Cheaper to run
$2,043/ year to fuel
29 MPG

FWD · 2.4L 4-cyl · 8-speed dual-clutch · 29 MPG

✓ Cheaper to run
$1,938/ year to fuel
24 MPG

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 $2,043 for the 2018 Acura ILX (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

  • Acura ILX
  • Cadillac ATS

Side by side

Acura ILXCadillac ATS
$2,043 Your annual fuel cost $1,938
29 MPG Combined efficiency 24 MPG
25 MPG City 20 MPG
35 MPG Highway 30 MPG
89 cu ft Passenger volume 91 cu ft
12 cu ft Cargo volume 10 cu ft
309 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
2.4L 4-cyl Engine / motor 3.6L 6-cyl
8-speed dual-clutch Transmission 8-speed automatic
FWD 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.

Acura ILX vs Cadillac ATS across model years

  • Acura ILX
  • 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 Acura ILX has more cargo space (12 vs. 10 cu ft).

Among 44 2018 compact cars, the Acura ILX ranks 30th and the Cadillac ATS 29th for lowest fuel cost.

Frequently asked questions

Which is more fuel-efficient, the 2018 Acura ILX or the 2018 Cadillac ATS?

Measured by cost to drive, the Cadillac ATS. The Acura ILX is rated 29 MPG combined and the Cadillac ATS 24 MPG (EPA, most efficient configuration of each).

How much does it cost to fuel the 2018 Acura ILX 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 $2,043 for the Acura ILX and $1,938 for the Cadillac ATS.

Which has more cargo space?

The Acura ILX, with 12 cu ft of luggage volume versus 10 cu ft (EPA interior volume index).

Acura ILX vs Cadillac ATS in other years

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