Comparison BMW Z4 (E89, facelift 2013) 28i (245 Hp) sDrive Automatic & Opel Astra H 1.4i 16V (90 Hp) Automatic
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| Brand: | BMW | Opel |
| Model: | Z4 | Astra |
| Generation: | Z4 (E89, facelift 2013) | Astra H |
| Engine / modification: | 28i (245 Hp) sDrive Automatic | 1.4i 16V (90 Hp) Automatic |
| Production start: | 2013 year | 2004 year |
| Production end: | 2016 year | 2009 year |
| Coupe type: | Cabriolet | Hatchback |
| Num. of Doors: | 2 | 5 |
| Num. of seats: | 2 | 5 |
| Fuel consumption / economy - urban: | 9.4 l/100 km | 7.7 l/100 km |
| Fuel consumption / economy - extra urban: | 5.3 l/100 km | 5.2 l/100 km |
| Fuel consumption / economy - combined: | 6.8 l/100 km | 6.5 l/100 km |
| Fuel Type: | Petrol (Gasoline) | Petrol (Gasoline) |
| Drag coefficient: | 0.34 | 0.31 |
| Fuel tank volume: | 55 l | 52 l |
| Emission standard: | EURO VI | Euro 4 |
| CO2 emissions: | 159 g/km | 151 g/km |
| Power: | 245 hp | 90 hp |
| Max power in: | 5000-6500 rpm. | 5600 rpm. |
| Maximum speed: | 250 km/h | 172 km/h |
| Acceleration from 0 to 100 km/h: | 5.5 sec | 15.2 sec |
| Torque: | 350 Nm @ 1250-4800 rpm. | 125 Nm @ 4000 rpm. |
| Model Engine: | Z14XE | |
| Engine position: | Front, longitudinal | Front, transverse |
| Engine displacement: | 1997 cm3 | 1364 cm3 |
| Engine oil capacity: | 5.75 l | 3.5 l |
| Coolant: | 8.5 l | |
| Fuel System: | Direct injection | Multi-point injection |
| Aspiration / Turbine: | Twin-power turbo | |
| Position of cylinders: | Inline | Inline |
| Valvetrain: | DOHC | |
| Number of cylinders: | 4 | 4 |
| Number of valves per cylinder: | 4 | 4 |
| Compression ratio: | 10 | 10.5 |
| Piston Stroke: | 90.1 mm | 80.6 mm |
| Cylinder Bore: | 84 mm | 73.4 mm |
| Wheel Drive: | Rear wheel drive | Front wheel drive |
| Number of Gears (automatic transmission): | 8 | 5 |
| Length: | 4239 mm | 4249 mm |
| Width: | 1790 mm | 1753 mm |
| Width including mirrors: | 2033 mm | |
| Height: | 1291 mm | 1467 mm |
| Wheelbase: | 2496 mm | 2614 mm |
| Front track: | 1511 mm | 1488 mm |
| Rear (Back) track: | 1559 mm | 1488 mm |
| Ride height(clearance): | 130 mm | 160 mm |
| Front overhang: | 871 mm | |
| Rear overhang: | 764 mm | |
| Minimum volume of Luggage (trunk): | 180 l | 380 l |
| Maximum amount of Luggage (trunk): | 310 l | 1330 l |
| Front suspension: | Double wishbone | The depreciated rack |
| Rear suspension: | Multi-link independent | The depreciated rack |
| Max weight: | 1750 kg | 1705 kg |
| Front brakes: | Ventilated discs | Ventilated discs |
| Rear brakes: | Ventilated discs | Disc |
| Kerb Weight: | 1420 kg | 1130 kg |
| ABS: | yes | yes |
| Steering type: | Steering rack and pinion | Steering rack and pinion |
| Power steering: | Electric Steering | |
| Minimum turning circle (turning diameter): | 10.7 m | |
| Tire size: | 225/45 R17 | 195/65 R15 |
| Wheel rims size: | 8J x 17 | 6.5J x 15 |