The Mercedes-Benz SL 400's gas tank is 19.8 gallons.
Larger sized gas tanks are advantageous because you don't need to go to the gas station as often. Also, you can take advantage of days when gas prices are discounted and fill up your vehicle with a larger quantity of gas.
Scroll down for the gas tank size tables for your year and trim.
| Year | Trim | Engine | Gallons | Liters |
|---|---|---|---|---|
| 2016 | Roadster 2D V6 Turbo | 3.0L | 19.8 | 74.9 |
| 2015 | Roadster 2D V6 Turbo | 3.0L | 19.8 | 74.9 |
CarDataSpecs.com is a website designed to quickly help you find pertinent information about your vehicle.
Also, you can consult the vehicle's owner's manual.