The Mercedes-Benz W221 is a chassis code of S-Class, the successor of Mercedes-Benz W220. The vehicle was unveiled in 2005 Frankfurt Motor Show.
Styling
The W221 S-Class’ exterior styling is distinctly different to the W220. The rear styling is similar to the E65 BMW 7 Series, and also the Mercedes-Benz Maybach – the larger saloon from Daimler AG’s flagship brand, which was presented to public in 1997.
Inside, the W221’s interior is also significantly different from the preceding model. The interior features an instrument cluster shroud that also contains the navigation screen, with silver effect air vents below, and a square, analog clock within the vents. Below the vents are metal tab switches with a black field behind them, to control the HVAC system. On the center console, a metal control wheel for the COMAND system sits above a piece of wood, surrounded by metal buttons. Throughout the interior, many buttons are metal, with black fields above them denoting the switches’ function.
The W221 is slightly larger in all dimensions than the W220, with a longer wheelbase and more interior room.
2009 facelift
The revised 2009 S-Class was announced on Apr 08, 2009 at Stuttgart. The minor model update includes minor cosmetic changes and several new features:
- Adaptive Highbeam Assist – detects vehicles with their lights on which are travelling towards or ahead of the car in which the system is fitted and controls the headlamps to ensure the largest possible range without dazzling other drivers.
- Blind spot monitor
- Lane Keeping Assist – detects road markings and senses if the driver is inadvertently straying out of the lane. If so, the driver is warned by short vibrations of the steering wheel. This system can also distinguish between intentional (for example, overtaking or merging) and unintentional lane departures, reducing the number of false alarms.
- Speed Limit Assist – identifies speed limit signs in passing and shows the relevant speed limit in the central display. It is standard for S 600.
- Attention Assist – continuously monitors more than 70 different parameters to detect driver fatigue and tiredness. Once the system detects behaviour that typically indicates the onset of drowsiness, a warning signal is sounded and “ATTENTION ASSIST. Break!” appears in the instrument cluster. It is not standard on S 400 HYBRID.
- Active Body Control (ABC) crosswind compensation – uses the sensors of the Electronic Stability Program (ESP) to vary the wheel load distribution via the ABC spring struts, depending on the direction and intensity of the crosswind, in order to reduce the adverse effects of crosswinds. This is standard on the S 600.
- Torque Vectoring Brake – brakes the inside rear wheel during cornering to enhance handling and safety by reducing understeer.
The updated models went on sale in June 2009. Early models include S 350 CDI BlueEFFICIENCY, S 450 CDI, S 350, S 400 HYBRID, S 450, S 500, S 600.
Models
S 320 CDI BlueEFFICIENCY (2008-2009)
It is a replacement of S 320 CDI with improved fuel efficiency. Changes include on-demand electric hydraulic power steering pump, standstill decoupling for the 7G-TRONIC transmission, 17-inch light-alloy wheels with reduced rolling resistance tyres.
Germany model has MSRP of €70,864.50 (incl. VAT) for short wheelbase version, €78,718.50 (incl. VAT) for long-wheelbase version.
S 400 HYBRID (2009-)
The vehicle was originally announced under the name S 400 BlueHYBRID. The vehicle was unveiled in 2009 Chicago Auto Show.
It is a mild hybrid with the lithium ion battery was supplied by Continental AG. The cells were provided by Johnson Controls-Saft.
Production vehicle was sold as S 400 HYBRID. US models went on sale in August 2009, but was delivered to dealers in 2009-10. Japan models went on sale in October 2009.
ESF 2009 (2009)
It is a safety research vehicle based on S 400 HYBRID, but with braking bag, Interactive Vehicle Communication.
The vehicle was unveiled in Enhanced Safety of Vehicles (ESV) Conference in Stuttgart.
S 420 CDI (2006-)
The vehicle were delivered beginning in December 2006, with MSRP of short-wheelbase model at €84,448 (net price € 72,800) and the long-wheelbase model at € 92,104 (net price € 79,400).
S 600 Guard (2006-)
It is an armoured vehicle with European B6/B7 resistance level. It resists military-standard small-arms projectiles and provides protection against fragments from hand grenades and other explosive charges. Additional safety features include run-flat tyres, 90L self-sealing fuel tank and a fire-extinguishing system. Other features include Michelin PAX 245-700 R470 AC tires, 90L fuel tank, optional emergency fresh-air system, pneumatic emergency control system for the power windows (operates independently of the on-board electronics), emergency boot opening facility, optional Panic Alarm System, rear camera, heated front windscreen and heated front windows, adjustable doorhold system for all four doors, rear doors that are pulled shut automatically over the last few millimetres, rear electric roller blinds. The vehicle has top speed of 210 km/h (130 mph), with GVW of 4,200 kg (9,300 lb).
S 600 Guard Pullman (2008-)
It was based on the Mercedes Benz S 600 L Guard, but in limousine form with an extra-long wheelbase. It includes a rear entrance with increased headroom, 4 seats behind driver partition. Other features included reinforcement of the links between the suspension components and the bodyshell, specifically targeted modification of the suspension components themselves, an additional brace (strut tower brace) between the front suspension struts, two additional steel springs at the rear to complement the air suspension, larger twin-calliper front brake discs.
The vehicles were delivered beginning in late 2008. The production launch marked the 80th anniversary of the Mercedes-Benz special-protection unit.
S 63 AMG, S 65 AMG
S 63 AMG includes Mercedes-Benz M156 engine rated 525 PS (386 kW; 518 hp) and 465 pound-feet 630 N·m (465 ft·lbf). S 65 AMG includes Mercedes-Benz M275 engine rated 612 PS (450 kW; 604 hp) and 1,000 N·m (738 ft·lbf), restyled front and rear bumpers and rocker panels, larger wheels, brakes, and tires, four exhaust pipes, modified and reprogrammed suspension for sport biased handling, and various interior changes.
2009 version
The engines had reduced fuel consumption and CO2 emissions by up to 3%. Styling changes include arrow-shaped radiator grille, AMG-specific daytime running lights, two transverse air outlets on each side, “6.3 AMG” or “V12 Biturbo” lettering on the front wings, redesigned exterior mirrors, 52-LED tail lights. Active Body Control provides crosswind stabilisation as standard equipment. Torque Vectoring Brake is added. Interior include PASSION leather upholstery, AMG-specific analogue clock featuring an IWC design.
Optional accessories include:
- AMG 20-inch forged wheels with 255/35R20 front and 275/30R20 rear tyres
- AMG trim elements in carbon fibre/piano lacquer
- AMG floor mats
The vehicles went on sale in June 2009, with S 65 AMG available in long-wheelbase version only.
The vehicles were unveiled in 2009 Shanghai motor show.
Concepts
S 300 BLUETEC Hybrid (2007)
It is a concept vehicle. It included a 2.2L 4-cylinder diesel engine with urea injection and electric motor with combined rating of 224 PS (165 kW; 221 hp) and 560 N·m (410 ft·lbf), with fuel consumption of 5.4 litres of diesel per 100 kilometres.
The vehicle was unveiled in 2007 Frankfurt Motor Show.
The car was estimated to go on sale in Europe in 2010, and would cost $80,000.
S 400 BLUETEC Hybrid (2007)
It included V6 BLUETEC diesel engine and a electric motor with combined ratings of 265 bhp (198 kW) and 465 lb·ft (630 N·m).
The vehicle was unveiled in 2007 LA Motor Show.
Mercedes-Benz Concept Ocean Drive (2007)
It is a concept vehicle based on long wheelbase version of S 600, but with two-tone yarn fabric roof. The vehicle features an oversized grille, redesigned LED headlights and restyled trunk, LED head and tail lamps, a revised air dam, restyled flanks without the wheelhouse bulges, door handles that fit flush into the body, AIRSCARF neck-level heating system, on all 4 seats. The car also contains pillarless windows that provide an unobstructed view for occupants when the large soft top is down.
Other features include aluminum wheels with 275/35ZR21 tires.
The vehicle was unveiled in 2007 NAIAS.
S 500 Plug-in HYBRID (2009)
It is a plug-in hybrid vehicle. It included 3.5L V6 engine, hybrid module rated 60 PS (44 kW; 59 hp) and 250 Nm (180 lb/ft), lithium-ion battery rated over 10 kWh, 30 km electric-only driving range.
The vehicle was unveiled in 2009 Frankfurt Motor Show.
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