compression ratio MERCEDES-BENZ S550 4MATIC 2008 W221 Owner's Manual

114 Control systems
COMAND audio CD/audio DVD/MP3
In many countries, reproductions are not
permitted without the prior consent of the
copyright holder, not even for private use.
Make sure that you know the applicable
copyright regulations and that you comply
with these.
If you own these rights yourself, e.g. for
your own compositions and recordings, or
the copyright holder has granted you per-
mission, these restrictions do not apply.
Notes about audio DVD operation
COMAND can playback commercially
available, prerecorded audio DVDs that
bear the following label. You will usually
find the label on the DVD booklet, the inlay,
or the DVD itself.Data on audio DVDs are stored either in
uncompressed format or in lossless com-
pressed format. The sound quality on au-
dio DVDs is therefore better than on
recordable DVDs that contain MP3 data
because the MP3 format uses a lossy type
of compression.
You cannot delete data from or record
additional data to commercially available,
prerecorded audio DVDs.
Please note the following information
about CDs/DVDs and pay special atten-
tion to the notes on copied and/or
self-written CDs/DVDs.
Notes about CDs/DVDsiAudio DVDs differ from recordable DVD-R
and DVD-RW discs.
iAudio CDs with copy protection are not
compatible with the CD audio standard and
therefore may not be able to be played by
COMAND.
There may be playback problems when playing
copied discs.
There is a large variety of discs, disc-writing soft-
ware and writers available. This variety means
that there is no guarantee that the system will be
able to play discs that you have written/copied
yourself.
There may be playback problems if you use CD-R
or CD-RW type discs you have copied yourself
with a storage capacity of more than 700 MB.
These CDs are not compatible with currently ap-
plicable standards.

715 Technical data
Engine
Engine
ModelS 550 (221.171)1
1The quoted data apply only to the standard vehicle. Contact an authorized Mercedes-Benz Center for the corresponding data of all special
bodies and special equipment.
S 550 4MATIC (221.186)1
Engine273273
Mode of operation4-stroke engine, gasoline injection4-stroke engine, gasoline injection
No. of cylinders88
Bore3.86 in (98.00 mm)3.86 in (98.00 mm)
Stroke3.56 in (90.50 mm)3.56 in (90.50 mm)
Total piston displacement333.3 cu in (5461 cm3)333.3 cu in (5461 cm3)
Compression ratio10.7:110.5:1
Output acc. to SAE J 13492
2Premium fuel required. Performance may vary with fuel octane rating.
382 hp/6 000 rpm
(285 kW/6 000 rpm)382 hp/6 000 rpm
(285 kW/6 000 rpm)
Maximum torque
acc. to SAE J 1349391 lb-ft/3 000 rpm
(530 Nm/3 000 rpm)391lb-ft/2800-4800rpm
(530 Nm/2 800 - 4 800 rpm)
Maximum engine speed6 500 rpm6 500 rpm
Firing order1-5-4-2-6-3-7-81-5-4-2-6-3-7-8
Poly-V-belt2 404 mm2 404 mm

716 Technical data
Engine
ModelS 600 (221.176)1
1The quoted data apply only to the standard vehicle. Contact an authorized Mercedes-Benz Center for the corresponding data of all special
bodies and special equipment.
S 63 AMG (221.077)1
Engine275156
Mode of operation4-stroke engine, gasoline injection4-stroke engine, gasoline injection
No. of cylinders128
Bore3.23 in (82.00 mm)4.02 in (102.20 mm)
Stroke3.43 in (87.00 mm)3.72 in (94.60 mm)
Total piston displacement336.4 cu in (5 513 cm3)378.8 cu in (6 208 cm3)
Compression ratio9:111.0:1
Output acc. to SAE J 13492
2Premium fuel required. Performance may vary with fuel octane rating.
510 hp/5 000 rpm
(380 kW/5 000 rpm)518 hp/6 800 rpm
(386 kW/6 800 rpm)
Maximum torque
acc. to SAE J 1349612 lb-ft/1 800 - 3 500 rpm
(830 Nm/1 800 - 3 500 rpm)465 lb-ft/5 200 rpm
(630 Nm/5 200 rpm)
Maximum engine speed5 950 rpm7200 rpm
Firing order1-12-5-8-3-10-6-7-2-11-4-91-5-4-2-6-3-7-8
Poly-V-belt2370 mm2 360 mm

717 Technical data
Engine
ModelS 65 AMG (221.179)1
1The quoted data apply only to the standard vehicle. Contact an authorized Mercedes-Benz
Center for the corresponding data of all special bodies and special equipment.
Engine275
Mode of operation4-stroke engine, gasoline injection
No. of cylinders12
Bore3.25 in (82.60 mm)
Stroke3.66 in (93.00 mm)
Total piston displacement364.9 cu in (5 980 cm3)
Compression ratio9:1
Output acc. to SAE J 13492
2Premium fuel required. Performance may vary with fuel octane rating.
603 hp/4 750 - 5 100 rpm
(450 kW/4 750 - 5 100 rpm)
Maximum torque
acc. to SAE J 1349738 lb-ft/2 000 - 4 000 rpm
(1 000 Nm/2 000 - 4 000 rpm)
Maximum engine speed5 950 rpm
Firing order1-12-5-8-3-10-6-7-2-11-4-9
Poly-V-belt2 370 mm