Comparison Porsche 911 GT3 3.8 (475 Hp) PDK & Opel Astra H GTC 1.8i (140 Hp) & Opel Astra J 2.0 CDTI (160 Hp) & Opel Astra J 1.7 CDTI (125 Hp) & Seat Altea (5P) 2.0 FSI (150 Hp) & Kia Cee'd SW I 2.0 CRDi (140 Hp)
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| Brand: | Porsche | Opel | Opel | Opel | Seat | Kia |
| Model: | 911 | Astra | Astra | Astra | Altea | Cee'd |
| Generation: | 911 GT3 | Astra H GTC | Astra J | Astra J | Altea (5P) | Cee'd SW I |
| Engine / modification: | 3.8 (475 Hp) PDK | 1.8i (140 Hp) | 2.0 CDTI (160 Hp) | 1.7 CDTI (125 Hp) | 2.0 FSI (150 Hp) | 2.0 CRDi (140 Hp) |
| Production start: | 2013 year | 2005 year | 2009 year | 2009 year | 2004 year | 2007 year |
| Production end: | 2010 year | 2012 year | 2012 year | 2009 year | ||
| Coupe type: | Coupe | Hatchback | Hatchback | Hatchback | Minivan | |
| Num. of Doors: | 2 | 3 | 5 | 5 | 5 | 5 |
| Num. of seats: | 2 | 5 | 5 | 5 | 5 | 5 |
| Fuel consumption / economy - urban: | 18.9 l/100 km | 10.4 l/100 km | 6.4 l/100 km | 5.7 l/100 km | 10.6 l/100 km | |
| Fuel consumption / economy - extra urban: | 8.9 l/100 km | 6.1 l/100 km | 4.1 l/100 km | 4.2 l/100 km | 6.3 l/100 km | |
| Fuel consumption / economy - combined: | 12.4 l/100 km | 7.7 l/100 km | 4.9 l/100 km | 4.7 l/100 km | 7.8 l/100 km | |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Diesel | Diesel | Petrol (Gasoline) | Diesel |
| Drag coefficient: | 0.32 | 0.31 | 0.31 | |||
| Fuel tank volume: | 64 l | 52 l | 56 l | 56 l | 55 l | 53 l |
| Emission standard: | EURO V | EURO IV | Euro 5 | Euro 5 | Euro 4 | |
| CO2 emissions: | 289 g/km | 175 g/km | 129 g/km | 125 g/km | ||
| Power: | 475 hp | 140 hp | 160 hp | 125 hp | 150 hp | 140 hp |
| Max power in: | 8250 rpm. | 6300 rpm. | 4000 rpm. | 4000 rpm. | 6000 rpm. | 3800 rpm. |
| Maximum speed: | 315 km/h | 209 km/h | 215 km/h | 195 km/h | 206 km/h | 205 km/h |
| Acceleration from 0 to 100 km/h: | 3.5 sec | 10.1 sec | 9 sec | 11.5 sec | 9.6 sec | 10.5 sec |
| Torque: | 440 Nm/6250 rpm. | 175 Nm/3800 rpm. | 350 Nm @ 1750-2500 rpm. | 280 Nm @ 2300 rpm. | 200 Nm/3500 rpm. | 305 Nm @ 1800-2500 rpm. |
| Model Engine: | A20DTH | A17DTR | D4EA | |||
| Engine position: | Rear, longitudinal | Front, transverse | Front, transverse | Front, transverse | Front, transverse | |
| Engine displacement: | 3799 cm3 | 1796 cm3 | 1956 cm3 | 1686 cm3 | 1984 cm3 | 1991 cm3 |
| Engine oil capacity: | 4.5 l | 4.0 l | 5.9 l | |||
| Coolant: | 7.3 l | |||||
| Fuel System: | Direct injection | Multi-point injection | Diesel Commonrail | Diesel Commonrail | Direct injection | Diesel Commonrail |
| Aspiration / Turbine: | Turbo / Intercooler (Turbocharging / Intercooler) | Turbo / Intercooler (Turbocharging / Intercooler) | ||||
| Position of cylinders: | Boxer | Inline | Inline | Inline | Inline | Inline |
| Valvetrain: | DOHC | SOHC | ||||
| Number of cylinders: | 6 | 4 | 4 | 4 | 4 | 4 |
| Number of valves per cylinder: | 4 | 4 | 4 | 4 | 4 | 4 |
| Compression ratio: | 12.9 | 10.5 | 18 | 18 | 11.5 | 17.3 |
| Piston Stroke: | 77.5 mm | 88.2 mm | 90.4 mm | 86 mm | 92.8 mm | 92 mm |
| Cylinder Bore: | 102 mm | 80.5 mm | 83 mm | 79 mm | 82.5 mm | 83 mm |
| Wheel Drive: | Rear wheel drive | Front wheel drive | Front wheel drive | Front wheel drive | Front wheel drive | Front wheel drive |
| Number of Gears (automatic transmission): | 7 PDK | 4 | 6 | |||
| Number of Gears (manual transmission): | 5 | 6 | 6 | 6 | 6 | |
| Length: | 4545 mm | 4290 mm | 4419 mm | 4419 mm | 4280 mm | 4470 mm |
| Width: | 1852 mm | 1753 mm | 1814 mm | 1814 mm | 1768 mm | 1790 mm |
| Width including mirrors: | 2033 mm | 2013 mm | 2013 mm | |||
| Height: | 1269 mm | 1415 mm | 1510 mm | 1510 mm | 1568 mm | 1490 mm |
| Wheelbase: | 2457 mm | 2614 mm | 2685 mm | 2685 mm | 2578 mm | 2650 mm |
| Front track: | 1551 mm | 1488 mm | 1541 mm | 1541 mm | 1534 mm | 1546 mm |
| Rear (Back) track: | 1555 mm | 1488 mm | 1581 mm | 1551 mm | 1523 mm | 1544 mm |
| Ride height(clearance): | 140 mm | 160 mm | 160 mm | |||
| Front overhang: | 910 mm | 865 mm | ||||
| Rear overhang: | 766 mm | 955 mm | ||||
| Minimum volume of Luggage (trunk): | 385 l | 380 l | 370 l | 370 l | 409 l | 534 l |
| Maximum amount of Luggage (trunk): | 1235 l | 1235 l | 409 l | 1664 l | ||
| Front suspension: | Independent type McPherson | The depreciated rack | Independent, Spring McPherson, with stabilizer | Independent type McPherson | ||
| Rear suspension: | Multi-link independent | The depreciated rack | Several levers and rods | |||
| Max weight: | 1720 kg | 1785 kg | 2065 kg | 2065 kg | 1970 kg | 1970 kg |
| Front brakes: | Ventilated discs | Ventilated discs | Ventilated discs | Ventilated discs | ||
| Rear brakes: | Ventilated discs | Disc | Disc | Disc | ||
| Kerb Weight: | 1430 kg | 1210 kg | 1515 kg | 1515 kg | 1375 kg | 1513-1572 kg |
| ABS: | yes | yes | yes | yes | yes | |
| Steering type: | Steering rack and pinion | Steering rack and pinion | Steering rack and pinion | Steering rack and pinion | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | Electric Steering | ||||
| Max. roof load: | 80 kg | |||||
| Minimum turning circle (turning diameter): | 11.4 m | 11.4 m | 10.9 m | 10.3-10.8 m | ||
| Permitted trailer load with brakes (12%): | 1500 kg | |||||
| Permitted trailer load without brakes: | 550 kg | |||||
| Permitted towbar download: | 75 kg | |||||
| Tire size: | 245/35 ZR20; 305/30 ZR20 | 205/55 R16 | 225/50 R17 | 215/60 R16 | 205/55 R16 | 185/65 R15; 195/65 R15; 205/55 R16; 225/45 R17 |
| Wheel rims size: | 9 J x 20; 12 J x 20 | 6.5J x 16 | R17 | R16 | 6.5 J X 16 | 5.5J x 15; 6J x 16; 7J x 17 |