Comparison Mercedes-Benz S-class Long (W221) S 420 CDI (320 Hp) & Chevrolet Silverado 3500 HD III (K2XX) Crew Cab Standard Box 6.6 Duramax TD V8 (445 Hp) 4WD SRW Automatic
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| Brand: | Mercedes-Benz | Chevrolet |
| Model: | S-class | Silverado 3500 HD |
| Generation: | S-class Long (W221) | Silverado 3500 HD III (K2XX) Crew Cab Standard Box |
| Engine / modification: | S 420 CDI (320 Hp) | 6.6 Duramax TD V8 (445 Hp) 4WD SRW Automatic |
| Production start: | 2006 year | 2017 year |
| Production end: | 2009 year | 2019 year |
| Coupe type: | Sedan | Pick-up |
| Powertrain Architecture: | Internal Combustion engine | |
| Num. of Doors: | 4 | 4 |
| Num. of seats: | 5 | 5 |
| Fuel consumption / economy - urban: | 13.0 l/100 km | |
| Fuel consumption / economy - extra urban: | 7.2 l/100 km | |
| Fuel consumption / economy - combined: | 9.4 l/100 km | |
| Fuel Type: | Diesel | Diesel |
| Fuel tank volume: | 90 l | 136 l |
| Emission standard: | EURO IV | |
| Power: | 320 hp | 445 hp |
| Max power in: | 3600 rpm. | 2800 rpm. |
| Maximum speed: | 250 km/h | |
| Acceleration from 0 to 100 km/h: | 6.0 sec | |
| Torque: | 730 Nm/2200 rpm. | 1234 Nm @ 1600 rpm. |
| Model Engine: | Duramax L5P | |
| Engine position: | Front, longitudinal | |
| Engine displacement: | 3996 cm3 | 6604 cm3 |
| Engine oil capacity: | 9.5 l | |
| Coolant: | 29.7 l | |
| Fuel System: | Diesel Commonrail | |
| Aspiration / Turbine: | Turbocharging | |
| Position of cylinders: | V engine | |
| Valvetrain: | DOHC | OHV |
| Number of cylinders: | 8 | 8 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 18 | 16 |
| Piston Stroke: | 86 mm | 99 mm |
| Cylinder Bore: | 86 mm | 103 mm |
| Wheel Drive: | Rear wheel drive | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 7 | |
| Length: | 5206 mm | 6083 mm |
| Width: | 1871 mm | |
| Width including mirrors: | 2045 mm | |
| Height: | 1473 mm | 1985 mm |
| Wheelbase: | 3165 mm | 3904 mm |
| Front track: | 1600 mm | 1748 mm |
| Rear (Back) track: | 1606 mm | 1709 mm |
| Minimum volume of Luggage (trunk): | 560 l | |
| Maximum amount of Luggage (trunk): | 1728 l | |
| Front suspension: | Pneumatic elastic element | Independent torsion bar, double wishbone |
| Rear suspension: | Pneumatic elastic element | |
| Max weight: | 2580 kg | 5216 kg |
| Front brakes: | Ventilated discs | |
| Rear brakes: | Disc | |
| Kerb Weight: | 2000 kg | 3424 kg |
| ABS: | yes | |
| Steering type: | Steering rack and pinion | Cone worm with recirculation balls |
| Minimum turning circle (turning diameter): | 15.8 m | |
| Permitted trailer load with brakes (12%): | 5897 kg | |
| Tire size: | 235/55 R17 | 235/80 R17; 265/70 R18 |
| Wheel rims size: | 8Jx17 | 7.5J x 17; 8J x 18 |