Comparison Porsche 911 Targa (991 II) 4 GTS 3.0 (450 Hp) & Mercedes-Benz SL (R129, facelift 1995) SL 280 (193 Hp) 5 Automatic & Opel Astra F (facelift 1994) 1.4 Si (82 Hp)
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| Brand: | Porsche | Mercedes-Benz | Opel |
| Model: | 911 | SL | Astra |
| Generation: | 911 Targa (991 II) | SL (R129, facelift 1995) | Astra F (facelift 1994) |
| Engine / modification: | 4 GTS 3.0 (450 Hp) | SL 280 (193 Hp) 5 Automatic | 1.4 Si (82 Hp) |
| Production start: | 2017 year | 1996 year | 1994 year |
| Production end: | 2020 year | 1998 year | 1996 year |
| Coupe type: | Targa | Roadster | Hatchback |
| Num. of Doors: | 2 | 2 | 3/5 |
| Num. of seats: | 2+2 | 2 | 5 |
| Fuel consumption / economy - urban: | 13.3 l/100 km | 13.9 l/100 km | 8.9 l/100 km |
| Fuel consumption / economy - extra urban: | 7.6 l/100 km | 8.4 l/100 km | 6.1 l/100 km |
| Fuel consumption / economy - combined: | 9.7 l/100 km | 10.2 l/100 km | 7.8 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.32 | 0.32-0.40 | 0.32 |
| Fuel tank volume: | 67 l | 80 l | 52 l |
| Emission standard: | Euro 6 | Euro 2 | Euro 1 |
| CO2 emissions: | 220 g/km | ||
| Power: | 450 hp | 193 hp | 82 hp |
| Max power in: | 6500 rpm. | 5500 rpm. | 5800 rpm. |
| Maximum speed: | 308 km/h | 225 km/h | 175 km/h |
| Acceleration from 0 to 100 km/h: | 4.1 sec | 9.9 sec | 13 sec |
| Acceleration from 0 to 200 km/h: | 14.1 sec | ||
| Torque: | 550 Nm @ 2150-5000 rpm. | 270 Nm @ 3750 rpm. | 114 Nm @ 3400 rpm. |
| Model Engine: | MDC.JA | M 104.943 | C14SE |
| Engine position: | Rear, longitudinal | Front, longitudinal | Front, transverse |
| Engine displacement: | 2981 cm3 | 2799 cm3 | 1389 cm3 |
| Engine oil capacity: | 8 l | 7 l | |
| Coolant: | 11.75 l | ||
| Fuel System: | Direct injection | Multi-point injection | |
| Maximum engine speed: | 7500 rpm. | ||
| Aspiration / Turbine: | BiTurbo | ||
| Position of cylinders: | Boxer | Inline | Inline |
| Valvetrain: | DOHC | SOHC | |
| Number of cylinders: | 6 | 6 | 4 |
| Number of valves per cylinder: | 4 | 4 | 2 |
| Compression ratio: | 10 | 10 | 9.8 |
| Piston Stroke: | 76.4 mm | 73.5 mm | 73.4 mm |
| Cylinder Bore: | 91 mm | 89.9 mm | 77.6 mm |
| Wheel Drive: | All wheel drive (4x4) | Rear wheel drive | Front wheel drive |
| Number of Gears (automatic transmission): | 5 | ||
| Number of Gears (manual transmission): | 7 | 5 | |
| Length: | 4528 mm | 4499 mm | 4051 mm |
| Width: | 1852 mm | 1812 mm | 1696 mm |
| Width including mirrors: | 1978 mm | 1852 mm | |
| Height: | 1291 mm | 1303 mm | 1410 mm |
| Wheelbase: | 2450 mm | 2515 mm | 2517 mm |
| Front track: | 1539 mm | 1535 mm | 1430/1424 mm |
| Rear (Back) track: | 1544 mm | 1523 mm | 1429/1423 mm |
| Ride height(clearance): | 135 mm | ||
| Minimum volume of Luggage (trunk): | 265 l | 360 l | |
| Maximum amount of Luggage (trunk): | 285 l | 1200 l | |
| Front suspension: | Independent type McPherson | ||
| Rear suspension: | Multi-link independent | ||
| Max weight: | 2025 kg | 2150 kg | 1495 kg |
| Front brakes: | Ventilated discs | Ventilated discs | Disc |
| Rear brakes: | Ventilated discs | Disc | Drum |
| Kerb Weight: | 1585 kg | 1755 kg | 975/995 kg |
| ABS: | yes | yes | |
| Steering type: | Steering rack and pinion | Cone worm with recirculation balls | Steering rack and pinion |
| Power steering: | Electric Steering | Hydraulic Steering | |
| Minimum turning circle (turning diameter): | 11.1 m | 10.7 m | 10.5 m |
| Tire size: | 245/35 ZR 20; 305/30 ZR 20 | 225/55 ZR 16 | 175/70 R13 82T; 175/65 R14 82T |
| Wheel rims size: | 9J x 20; 12J x 20 | 8 J x 16 H 2 | 5.5J x 13 ET49; 5.5J x 14 ET49 |