Comparison Mercedes-Benz S-class (W221) S 450 (340 Hp) G-TRONIC & Cadillac ATS Sedan 2.0 (276 Hp) AWD Automatic
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| Brand: | Mercedes-Benz | Cadillac |
| Model: | S-class | ATS |
| Generation: | S-class (W221) | ATS Sedan |
| Engine / modification: | S 450 (340 Hp) G-TRONIC | 2.0 (276 Hp) AWD Automatic |
| Production start: | 2006 year | 2013 year |
| Production end: | 2009 year | |
| Coupe type: | Sedan | Sedan |
| Num. of Doors: | 4 | 4 |
| Num. of seats: | 5 | 5 |
| Fuel consumption / economy - urban: | 16.5-16.7 l/100 km | 12.0 l/100 km |
| Fuel consumption / economy - extra urban: | 8.1-8.3 l/100 km | 6.3 l/100 km |
| Fuel consumption / economy - combined: | 11.2-11.4 l/100 km | 8.4 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Fuel tank volume: | 90 l | 62.5 l |
| CO2 emissions: | 267-272 g/km | 195 g/km |
| Power: | 340 hp | 276 hp |
| Max power in: | 6000 rpm. | 5500 rpm. |
| Maximum speed: | 250 km/h | 220-230 km/h |
| Acceleration from 0 to 100 km/h: | 5.9 sec | 6.1 sec |
| Torque: | 460 Nm @ 2700-5000 rpm. | 353 Nm/1700-5500 rpm. |
| Model Engine: | M 273.922 | |
| Engine position: | Front, longitudinal | Front, longitudinal |
| Engine displacement: | 4663 cm3 | 1998 cm3 |
| Engine oil capacity: | 8.5 l | 5.7 l |
| Coolant: | 8.5 l | 7.7 l |
| Fuel System: | Multi-point injection | Direct injection |
| Maximum engine speed: | 7000 rpm. | |
| Aspiration / Turbine: | Turbocharging | |
| Position of cylinders: | V engine | Inline |
| Number of cylinders: | 8 | 4 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 10.5 | 9.5 |
| Piston Stroke: | 86 mm | 86 mm |
| Cylinder Bore: | 92.9 mm | 86 mm |
| Wheel Drive: | Rear wheel drive | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 7G-TRONIC | 6 |
| Length: | 5079 mm | 4644 mm |
| Width: | 1872 mm | 1805 mm |
| Width including mirrors: | 2115 mm | |
| Height: | 1473 mm | 1427-1419 mm |
| Wheelbase: | 3035 mm | 2775 mm |
| Front track: | 1604 mm | 1512 mm |
| Rear (Back) track: | 1606 mm | 1548 mm |
| Front overhang: | 871 mm | |
| Rear overhang: | 1173 mm | |
| Minimum volume of Luggage (trunk): | 560 l | 381 l |
| Maximum amount of Luggage (trunk): | 560 l | |
| Front suspension: | Pneumatic elastic element | Independent, Spring McPherson, with stabilizer |
| Rear suspension: | Pneumatic elastic element | Multi-link independent |
| Max weight: | 2545 kg | |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Ventilated discs |
| Kerb Weight: | 1865 kg | 1542 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | |
| Minimum turning circle (turning diameter): | 11.8 m | 11.60 m |
| Permitted trailer load with brakes (12%): | 1136 kg | |
| Permitted trailer load without brakes: | 750 kg | |
| Tire size: | 235/55 R17 | 225/45 R17; 225/40 ZR18; 255/35 R18 |
| Wheel rims size: | R17 | 8J x 17; 8J x 18 |