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Mercedes-Benz S-Class

Photo: Mercedes-Benz S-Class by David Adam Kess, CC BY-SA 4.0, via Wikimedia Commons. It shows the model, not always this exact version.

Mercedes-Benz · model year 1998

1998 Mercedes-Benz S320

Large · Rear-Wheel Drive · Gas · EPA class: Large Cars

EPA figures · 1998fueleconomy.gov
18MPG combined
15/22MPG city / highway
$4,550fuel a year
494 g CO₂ per mile 3.2 L 6-cyl Automatic 5-spd
This car on fueleconomy.gov, read 2 October 2026. Your own figures depend on how and where you drive.

Where it places

The CarCody take

The 1998 Mercedes-Benz S320 is a gasoline-powered large car with rear-wheel drive, a 3.2 L 6-cylinder engine and a 5-speed automatic transmission. Its EPA fuel economy is 15 MPG in city driving, 22 MPG on the highway and 18 MPG combined. The listed EPA annual fuel cost is USD 4,550, while tailpipe CO2 emissions are 493.72 g per mile. The S320 is part of the Mercedes-Benz S-Class family and is based on the S-Class. These figures help frame the car’s fuel use and emissions together with its engine and drivetrain. Buyers comparing running costs can use the combined rating and annual cost, while the city and highway figures show the separate ratings provided for this configuration.

Good to know

  • 3.2 L 6-cylinder engine.
  • Rear-wheel drive.
  • 5-speed automatic transmission.
  • Highway fuel economy is 22 MPG.

Watch for

  • City fuel economy is 15 MPG.
  • EPA annual fuel cost is USD 4,550.
  • Tailpipe CO2 is 493.72 g per mile.

Who it suits. It may suit buyers looking for a gasoline S-Class with a 6-cylinder engine, rear-wheel drive and automatic transmission. The 18 MPG combined figure and USD 4,550 annual fuel cost are relevant when weighing fuel use.

The 1998 S320 combines a 3.2 L 6-cylinder gasoline engine with rear-wheel drive and a 5-speed automatic. Its listed combined fuel economy is 18 MPG and its EPA annual fuel cost is USD 4,550.

Every figure on record

Efficiency
Combined MPG
18 MPG
City MPG
15 MPG
Highway MPG
22 MPG
Running cost
Annual fuel cost
$4,550
Tailpipe CO₂
494 g per mile
The car
Model year
1998
Body
Car
EPA size class
Large Cars
Drive
Rear-Wheel Drive
Powertrain
Engine
3.2 L 6-cyl
Transmission
Automatic 5-spd
Fuel
Gasoline

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