2020 head-to-head · Midsize Car
2020 Acura RLX vs Bentley Mulsanne
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
RWD · 6.8L 8-cyl turbo · 8-speed automatic · 12 MPG
The 2020 Acura RLX is the cheaper one to run. Driving 15,000 miles a year with $3.95/gal premium gas, it costs about $2,576 a year to fuel (23 MPG), versus $4,938 for the 2020 Bentley Mulsanne (12 MPG). That's roughly $2,361 a year, or about $11,807 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
- Bentley Mulsanne
Side by side
| Acura RLX | Bentley Mulsanne | |
|---|---|---|
| $2,576 | Your annual fuel cost | $4,938 |
| 23 MPG | Combined efficiency | 12 MPG |
| 20 MPG | City | 10 MPG |
| 29 MPG | Highway | 16 MPG |
| 102 cu ft | Passenger volume | 101 cu ft |
| 15 cu ft | Cargo volume | 11 cu ft |
| 383 g/mi | Tailpipe CO₂ (g/mi) | 749 g/mi |
| 5/10 | EPA fuel economy score | 1/10 |
| 5/10 | EPA greenhouse gas score | 1/10 |
| Gas | Powertrain | Gas |
| Premium gasoline | Fuel | Premium gasoline |
| 3.5L 6-cyl | Engine / motor | 6.8L 8-cyl turbo |
| 10-speed automatic | 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 RLX vs Bentley Mulsanne across model years
- Acura RLX
- Bentley Mulsanne
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. 11 cu ft).
Among 64 2020 midsize cars, the Acura RLX ranks 56th and the Bentley Mulsanne 63rd for lowest fuel cost.
Frequently asked questions
Which is more fuel-efficient, the 2020 Acura RLX or the 2020 Bentley Mulsanne?
Measured by cost to drive, the Acura RLX. The Acura RLX is rated 23 MPG combined and the Bentley Mulsanne 12 MPG (EPA, most efficient configuration of each).
How much does it cost to fuel the 2020 Acura RLX vs. the Bentley Mulsanne per year?
At 15,000 miles a year with $3.95/gal premium gas, about $2,576 for the Acura RLX and $4,938 for the Bentley Mulsanne.
Which has more cargo space?
The Acura RLX, with 15 cu ft of luggage volume versus 11 cu ft (EPA interior volume index).
Acura RLX vs Bentley Mulsanne in other years
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