Mercedes-Benz S450 4matic MPG by year — every rating on record
The Mercedes-Benz S450 4matic has a combined EPA fuel economy rating for 3 model years, from 2018 to 2020. Across those years its best rated version returned 22 mpg (2018) and its thirstiest returned 22 mpg (2018). The EPA record holds 3 configurations for this nameplate, most recently a Large Cars.
Year-by-year EPA ratings
| Model year | Configurations | Best combined | Worst combined | Class rank that year | Drivetrains | Fuel | EPA class |
|---|---|---|---|---|---|---|---|
| 2018 | 1 | 22 mpg | 22 mpg | #44 of 77 (43th pct) | 4-Wheel Drive | Premium | Large Cars |
| 2019 | 1 | 22 mpg | 22 mpg | #40 of 80 (51th pct) | 4-Wheel Drive | Premium | Large Cars |
| 2020 | 1 | 22 mpg | 22 mpg | #38 of 78 (52th pct) | 4-Wheel Drive | Premium | Large Cars |
Where it has stood in its class
Ranked against every other nameplate the EPA filed under the same class that year. The Mercedes-Benz S450 4matic placed highest in 2020 at #38 of 78, and lowest in 2018 at #44 of 77. It spent 2 of its 3 ranked years in the top half of its class.
Every configuration on record
All 3 configurations EPA lists for this nameplate, newest first.
| Year | Configuration | Engine detail | City | Highway | Combined | Gallons/yr | Barrels/yr | EPA fuel cost/yr | CO2 g/mi | GHG |
|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | 3.0L 6-cyl 4-Wheel Drive Automatic 9-spd Premium | SIDI, turbocharged, start-stop | 18 | 28 | 22 | 522.7 | 13.5 | $3,500 | 408 | 4/10 |
| 2019 | 3.0L 6-cyl 4-Wheel Drive Automatic 9-spd Premium | SIDI, turbocharged, start-stop | 18 | 28 | 22 | 522.7 | 13.5 | $3,500 | 408 | 4/10 |
| 2018 | 3.0L 6-cyl 4-Wheel Drive Automatic 9-spd Premium | SIDI, turbocharged, start-stop | 18 | 28 | 22 | 522.7 | 13.5 | $3,500 | 408 | 4/10 |
What S450 4matic fuel costs over a year
At the EPA's 11,500 miles a year, the 2020 Mercedes-Benz S450 4matic burns 523 to 523 gallons depending on configuration. Below is what that costs at three pump prices, and how much more the thirstiest configuration costs than the most efficient one.
| Pump price | Most efficient | Thirstiest | Spread |
|---|---|---|---|
| $3.00/gal | $1,568 | $1,568 | $0 |
| $3.50/gal | $1,830 | $1,830 | $0 |
| $4.00/gal | $2,091 | $2,091 | $0 |
EPA’s own estimate for the 2020 model year is $3,500 to $3,500 a year in fuel, or $6,250 more than the average new vehicle over five years.
How it compares with other Large Cars
Across the 305 nameplates EPA classifies as Large Cars, the median best combined rating is 21 mpg. At 22 mpg the Mercedes-Benz S450 4matic is 1 mpg better the median, which is worth about $87 a year at $3.50 a gallon.
- All Large Cars rankings — every nameplate in the class, best to worst.
Other Mercedes-Benz nameplates
Every Mercedes-Benz model compared → — all nameplates ranked by best combined rating, with what each one costs a year.