2020 head-to-head · Midsize Car
2020 Acura RLX vs Cadillac CT5
MPG, range and what each one really costs you to fuel, from official EPA ratings and recalculated with your own gas and electricity prices.
FWD · 3.5L 6-cyl · 10-speed automatic · 23 MPG
The 2020 Cadillac CT5 is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $2,279 a year to fuel (26 MPG), versus $2,576 for the 2020 Acura RLX (23 MPG). That's roughly $297 a year, or about $1,486 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 RLX
- Cadillac CT5
Side by side
| Acura RLX | Cadillac CT5 | |
|---|---|---|
| $2,576 | Your annual fuel cost | $2,279 |
| 23 MPG | Combined efficiency | 26 MPG |
| 20 MPG | City | 23 MPG |
| 29 MPG | Highway | 32 MPG |
| 102 cu ft | Passenger volume | 99 cu ft |
| 15 cu ft | Cargo volume | 13 cu ft |
| 383 g/mi | Tailpipe CO₂ (g/mi) | 337 g/mi |
| 5/10 | EPA fuel economy score | 5/10 |
| 5/10 | EPA greenhouse gas score | 5/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 3.5L 6-cyl | Engine / motor | 2.0L 4-cyl turbo |
| 10-speed automatic | Transmission | 10-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 RLX vs Cadillac CT5 across model years
- Acura RLX
- Cadillac CT5
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 RLX has more cargo space (15 vs. 13 cu ft).
Among 64 2020 midsize cars, the Acura RLX ranks 56th and the Cadillac CT5 49th for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2020 Acura RLX or the 2020 Cadillac CT5?
Measured by cost to drive, the Cadillac CT5. The Acura RLX is rated 23 MPG combined and the Cadillac CT5 26 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2020 Acura RLX vs. the Cadillac CT5 per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,576 for the Acura RLX and $2,279 for the Cadillac CT5.
Which has more cargo space?
The Acura RLX, with 15 cu ft of luggage volume versus 13 cu ft (EPA interior volume index).
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