Comparison BMW Z4 (E89, facelift 2013) 20i (184 Hp) sDrive Automatic & Opel Astra F 1.6 Si (100 Hp) Automatic
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| Brand: | BMW | Opel |
| Model: | Z4 | Astra |
| Generation: | Z4 (E89, facelift 2013) | Astra F |
| Engine / modification: | 20i (184 Hp) sDrive Automatic | 1.6 Si (100 Hp) Automatic |
| Production start: | 2013 year | 1992 year |
| Production end: | 2016 year | 1994 year |
| Coupe type: | Cabriolet | Hatchback |
| Num. of Doors: | 2 | 3/5 |
| Num. of seats: | 2 | 5 |
| Fuel consumption / economy - urban: | 9.4 l/100 km | 9.4 l/100 km |
| Fuel consumption / economy - extra urban: | 5.3 l/100 km | 6.5 l/100 km |
| Fuel consumption / economy - combined: | 6.8 l/100 km | 8.3 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.34 | 0.32 |
| Fuel tank volume: | 55 l | 52 l |
| Emission standard: | EURO VI | Euro 1 |
| CO2 emissions: | 159 g/km | |
| Power: | 184 hp | 100 hp |
| Max power in: | 5000 rpm. | 5600 rpm. |
| Maximum speed: | 232 km/h | 183 km/h |
| Acceleration from 0 to 100 km/h: | 6.9 sec | 12.5 sec |
| Torque: | 270 Nm @ 1250-4500 rpm. | 135 Nm @ 3400 rpm. |
| Model Engine: | C16SE | |
| Engine position: | Front, longitudinal | Front, transverse |
| Engine displacement: | 1997 cm3 | 1598 cm3 |
| Engine oil capacity: | 5.75 l | |
| Coolant: | 8.5 l | |
| Fuel System: | Direct injection | Multi-point injection |
| Aspiration / Turbine: | Twin-power turbo | |
| Position of cylinders: | Inline | Inline |
| Valvetrain: | SOHC | |
| Number of cylinders: | 4 | 4 |
| Number of valves per cylinder: | 4 | 2 |
| Compression ratio: | 10 | 9.8 |
| Piston Stroke: | 90.1 mm | 81.5 mm |
| Cylinder Bore: | 84 mm | 79 mm |
| Wheel Drive: | Rear wheel drive | Front wheel drive |
| Number of Gears (automatic transmission): | 8 | 4 |
| Length: | 4239 mm | 4051 mm |
| Width: | 1790 mm | 1688 mm |
| Width including mirrors: | 1795 mm | |
| Height: | 1291 mm | 1410 mm |
| Wheelbase: | 2496 mm | 2517 mm |
| Front track: | 1511 mm | 1424 mm |
| Rear (Back) track: | 1559 mm | 1423 mm |
| Ride height(clearance): | 130 mm | 135 mm |
| Minimum volume of Luggage (trunk): | 180 l | 360 l |
| Maximum amount of Luggage (trunk): | 310 l | 1200 l |
| Front suspension: | Double wishbone | Wishbone |
| Rear suspension: | Multi-link independent | Suspension with traction connecting levers |
| Max weight: | 1750 kg | 1515 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Drum |
| Kerb Weight: | 1420 kg | 970/990 kg |
| ABS: | yes | |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | |
| Minimum turning circle (turning diameter): | 10.7 m | 10.5 m |
| Tire size: | 225/45 R17 | 175/70 R13 82T; 175/65 R14 82T |
| Wheel rims size: | 8J x 17 | 5.5J x 13 ET49; 5.5J x 14 ET49 |