213 What you should know at the gas station
Te ch n ica l
data Instruments 
and controlsOperationDrivingInstrument 
cluster displayPractical hints Car care Index Leaving the engine running and the fuel cap open can 
cause the “CHECK ENGINE” lamp to illuminate.
Fuel tank capacity approximately 19.0 US gal (72.0 l).
This includes approximately 3.2 US gal (12.0 l) reserve.
Use premium unleaded gasoline: Posted Octane 
Index 91 (Average of 96 RON / 86 MON).
•Engine oil
Engine oil level check, see page 89 and page 233.
Fill quantity between upper and lower dipstick 
marking level: 2.1 US qt (2.0 l).
Recommended engine oils, see Approved Service 
Products sheet.• Coolant
For normal replenishing, use water (potable water 
quality).
For further information (e.g. anticorrosion/
antifreeze), see page 292.
• Spark plugs
Approved spark plugs, see page 290.
• Tire pressure
For tire pressure, refer to tire pressure label inside 
the fuel filler flap. See page 250 for further details.
• Air conditioner
R-134a refrigerant and special PAG lubricant, see 
page 294.
Wa r n i n g !
Overfilling of fuel tank may result in creating 
pressure in the system which could cause a gas 
discharge such as the gas spraying back out upon 
removing the filler nozzle which could cause 
personal injury. 
290 Technical data
Te ch n ica l
data Instruments 
and controlsOperation DrivingInstrument 
cluster displayPractical hints Car care Index
Electrical system
We i g h t s
(see certification tag) Model ML 320 ML 430 ML 55 AMG
Generator (alternator) 14 V / 115 A 14 V / 150 A 14 V / 150 A
S t a r te r  m o to r 12 V / 1. 7 k W 12V / 1. 7 k W 12V / 1.7  k W
Battery 12V / 100 Ah 12V / 100 Ah 12V / 100 Ah
Spark plugs
Electrode gap
Tightening torqueBosch F 8 DPER
Beru 14 FGH 8 DPUR X 2
0.039 in (1.0 mm)
15–22ft.lb (20–30Nm)Bosch F 8 DPER
Beru 14 FGH 8 DPUR X 2
0.039 in (1.0 mm)
15–22ft.lb (20–30Nm)Bosch F 8 DPER
0.039 in (1.0 mm)
15–22ft.lb (20–30Nm)
Roof load max. 220 lbs (100 kg)