Mercedes-Benz S-Class 2008 COMAND Manual - Manual (Page 752)

751
Technical data
Engine
̄ Engine
Model S 450 4MATIC (221.184) 1,2
1 The quoted data apply only to the standard vehicle. Contact an authorized Mercedes-Benz Center for the corresponding data of all special bodies and special equip-
ment.
2 Canada only
S 550 (221.171) 1
Engine 273 273
Mode of operation 4-stroke engine, gasoline injection 4-stroke engine, gasoline injection
No. of cylinders 8 8
Bore 3.66 in (92.90 mm) 3.86 in (98.00 mm)
Stroke 3.39 in (86.00 mm) 3.56 in (90.50 mm)
Total piston displacement 284.6 cu in (4 663 cm 3 ) 333.3 cu in (5461 cm 3 )
Compression ratio 10.5:1 10.7:1
Output acc. to SAE J 1349 3
3 Premium fuel required. Performance may vary with fuel octane rating.
335 hp/6000 rpm
(250 kW/6000 rpm) 382 hp/6 000 rpm
(285 kW/6 000 rpm)
Maximum torque
acc. to SAE J 1349 391 lb-ft/2700 - 5000 rpm
(460 Nm/2 700 - 5 000 rpm) 391 lb-ft/3 000 rpm
(530 Nm/3000 rpm)
Maximum engine speed 6 500 rpm 6500 rpm
Firing order 1-5-4-2-6-3-7-8 1-5-4-2-6-3-7-8
Poly-V-belt 2 404 mm 2404 mm