Comparison Porsche 911 (991 II) Turbo S 3.8 (580 Hp) PDK 4x4 & Cadillac ATS Coupe 3.6 V6 (325 Hp) AWD Automatic
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| Brand: | Porsche | Cadillac |
| Model: | 911 | ATS |
| Generation: | 911 (991 II) | ATS Coupe |
| Engine / modification: | Turbo S 3.8 (580 Hp) PDK 4x4 | 3.6 V6 (325 Hp) AWD Automatic |
| Production start: | 2015 year | 2015 year |
| Coupe type: | Coupe | Coupe |
| Num. of Doors: | 2 | 2 |
| Num. of seats: | 2+2 | 4 |
| Fuel consumption / economy - urban: | 11.8 l/100 km | 13.1 l/100 km |
| Fuel consumption / economy - extra urban: | 7.5 l/100 km | 9.0 l/100 km |
| Fuel consumption / economy - combined: | 9.1 l/100 km | 10.7 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.31 | 0.29 |
| Fuel tank volume: | 68 l | 60.5 l |
| Emission standard: | EURO VI | |
| CO2 emissions: | 212 g/km | |
| Power: | 580 hp | 325 hp |
| Max power in: | 6750 rpm. | 6800 rpm. |
| Maximum speed: | 330 km/h | |
| Acceleration from 0 to 100 km/h: | 2.9 sec | |
| Torque: | 750 Nm/2250-4000 rpm. | 373 Nm @ 4800 rpm. |
| Model Engine: | LFX | |
| Engine position: | Rear, longitudinal | Front, longitudinal |
| Engine displacement: | 3800 cm3 | 3564 cm3 |
| Engine oil capacity: | 10.4 l | 5.7 l |
| Coolant: | 10.2 l | |
| Fuel System: | Direct injection | Direct injection |
| Maximum engine speed: | 7200 rpm. | |
| Aspiration / Turbine: | BiTurbo | |
| Position of cylinders: | Boxer | V engine |
| Valvetrain: | DOHC-VVT | |
| Number of cylinders: | 6 | 6 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 9.8 | 11.5 |
| Piston Stroke: | 77.5 mm | 85.6 mm |
| Cylinder Bore: | 102 mm | 94 mm |
| Wheel Drive: | All wheel drive (4x4) | All wheel drive (4x4) |
| Number of Gears (automatic transmission): | 7 PDK | 6 Hydra-Matic |
| Length: | 4507 mm | 4663 mm |
| Width: | 1880 mm | 1841 mm |
| Width including mirrors: | 1978 mm | |
| Height: | 1297 mm | 1392-1399 mm |
| Wheelbase: | 2450 mm | 2775 mm |
| Front track: | 1541 mm | 1532 mm |
| Rear (Back) track: | 1590 mm | 1568 mm |
| Minimum volume of Luggage (trunk): | 115 l | 295 l |
| Maximum amount of Luggage (trunk): | 260 l | |
| Front suspension: | Independent type McPherson | Independent, Spring McPherson, with stabilizer |
| Rear suspension: | Multi-link independent | Multi-link independent |
| Max weight: | 1990 kg | 2050 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Ventilated discs |
| Kerb Weight: | 1600 kg | 1675 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | |
| Minimum turning circle (turning diameter): | 11.6 m | |
| Permitted trailer load without brakes: | 454 kg | |
| Tire size: | 245/35 ZR 20; 305/30 ZR 20 | 225/40 R18; 255/35 R18 |
| Wheel rims size: | 9 J x 20; 11.5 J x 20 | 8J x 18; 9J x 18 |