S550 4matic

Overview

Body

Large CarsEPA, from EPA, last updated 6/11/2026

Drivetrain

4-Wheel DriveEPA, from EPA, last updated 6/11/2026

Transmission

Automatic 9-spdEPA, from EPA, last updated 6/11/2026

Powertrain

GasEPA, from EPA, last updated 6/11/2026

Fuel

PremiumEPA, from EPA, last updated 6/11/2026

Engine & performance

Cyl

8EPA, from EPA, last updated 6/11/2026

Aspiration

TurbochargedEPA, from EPA, last updated 6/11/2026

Start-stop system

YesEPA, from EPA, last updated 6/11/2026

Efficiency

MPG Hwy

25 mpgEPA, from EPA, last updated 6/11/2026

MPG City

16 mpgEPA, from EPA, last updated 6/11/2026

MPG Comb

20 mpgEPA, from EPA, last updated 6/11/2026

Fuel $/yr

$3,850EPA, from EPA, last updated 6/11/2026

CO₂

452 g/miEPA, from EPA, last updated 6/11/2026

Eco Score

4/10EPA, from EPA, last updated 6/11/2026

Smog score

5/10

Elec. Range

0 miEPA, from EPA, last updated 6/11/2026

Real-world MPG

20.9 mpg, reported by 1 driverabout 0.9 mpg above the EPA combined estimate

SmartWay certified

No

Dimensions & capacity

Length

198 inNHTSA vPIC, from NHTSA vPIC, last updated 6/5/2026

Width

75 inNHTSA vPIC, from NHTSA vPIC, last updated 6/5/2026

Height

56 inNHTSA vPIC, from NHTSA vPIC, last updated 6/5/2026

Wheelbase

116 inNHTSA vPIC, from NHTSA vPIC, last updated 6/5/2026

Curb Weight

4,817 lbNHTSA vPIC, from NHTSA vPIC, last updated 6/5/2026

Pass. Vol

112 ft³EPA, from EPA, last updated 6/11/2026

Cargo Vol

12 ft³EPA, from EPA, last updated 6/11/2026

Safety NHTSA, model year

Recalls

0

Owner complaints

0

Feature availability

Which features come standard, cost extra, or are locked to a pricier trim arrives with the next data phase. Standard equipment shows here today.